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847results about How to "Precise position control" patented technology
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Wheel type mobile fruit picking robot and fruit picking method
InactiveCN102124866AReduce energy consumptionShorten speedProgramme-controlled manipulatorPicking devicesUltrasonic sensorData acquisition
Owner:NANJING AGRICULTURAL UNIVERSITY
Automatic-navigation crawler-type mobile fruit picking robot and fruit picking method
InactiveCN102165880AFully automated pickingSimple structureProgramme-controlled manipulatorPicking devicesSimulationActuator
The invention discloses an automatic-navigation crawler-type mobile fruit picking robot which comprises a mechanical execution system and a control system and is characterized in that the mechanical execution system comprises an intelligent movable platform, a fruit picking mechanical arm and a two-finger type manipulator, wherein the intelligent movable platform comprises two crawler assemblies, an experimental facility fixing rack, a supporting stand column, a cross beam, a speed reducer and the like; and the control system comprises an industrial personal computer, a motion control card, a data collecting card, an image collecting card, an encoder, a GPS (global position system), a monocular zooming camera assembly, a binocular camera, a laser ranging sensor, a control circuit and the like. The automatic-navigation crawler-type mobile fruit picking robot integrates the fruit picking mechanical arm, the two-finger type manipulator, the intelligent movable platform and the sensor system, integrates multiple key technologies such as fruit identification, motion of the picking mechanical arm, grabbing of a tail-end executer, automatic navigation and obstacle avoidance of the movable platform, and the like, and really realizes automatic and humanized fruit picking.
Owner:NANJING AGRICULTURAL UNIVERSITY
Clear water controlling device for high-energy mixer and high-energy mixer
ActiveCN102729335BControl openingAccurate opening controlFlow mixersTransportation and packagingHigh energyEngineering
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
Machine vision based full-automatic rotation printed product defect detection device
InactiveCN106525873AGood quality inspectionOvercome the problem of not being able to detect the defects of printing products on complex curved surfaces of rotary bodiesMaterial analysis by optical meansPrinting press partsSoftware systemEngineering
The invention discloses a machine vision based full-automatic rotation printed product defect detection device which comprises an industrial control computer, supporting facilities of the industrial control computer, an image defect detection software system, a signal transmission unit, an image collection unit, a loading manipulator system, an unloading manipulator system and a product clamping rotation system; the industrial control computer is electrically connected with the image collection unit through the signal transmission unit; the image collection unit is formed by combining an image collection processing card, a CCD industrial camera, an optical lens and a detection light source together; the signal transmission unit is formed by three parts including an I / O (input / output) card, a synchronous card and a rotary encoder; and the product clamping rotation system is mainly used for fixing a product and driving the product to rotate. The machine vision based full-automatic rotation printed product defect detection device has the characteristics of no contact, high detection precision, rapidness, accuracy, high repeatability and high automation degree, relieves the manual detection pressure, solves various problems in manual detection, improves the detection quality, and increases the detection speed.
Owner:广州市申发机电有限公司
Transfer robot system
InactiveCN102699894APrecise control anglePrecise position controlManipulatorRobotic systemsManipulator
The invention provides a transfer robot system which comprises a base, a rotary upright column, a suspension arm, a manipulator and a control device. The rotary upright column is movably positioned on the base and is perpendicular to the base, the suspension arm is perpendicularly mounted on the rotary upright column and moves along the axial direction of the rotary upright column, the manipulator is movably fixed to the tail end of the suspension arm, the control device controls the rotation angle of the rotary upright column and displacement distances of the base, the suspension arm and the manipulator, and the suspension arm is perpendicular to the rotary upright column and is provided with a vision photographing and judging device for scanning types of transferred workpieces. Accordingly, the large heavy workpieces are transferred automatically, and production efficiency is improved.
Owner:HUAHENG WELDING
Full-automatic fast and efficient rotating curved surface digital ink-jet printing machine
InactiveCN106739542AAccurate position controlNo need to adjust the mechanical structureTypewritersPressure systemHand movements
The invention discloses a full-automatic fast and efficient rotating curved surface digital ink-jet printing machine. The printing machine comprises a control face plate, a printing product lifting worktable, a manipulator system, a product tool position clamping system and an ink-jet control system, an air pressure system, an ink road system and multiple sets of digital printing heads, wherein product rotation and surface changing, driving of the printing product lifting worktable, surface photoelectric dust removal treatment, industrial robot feeding and blanking and product transfer manipulator system hand movements are all controlled by servo motors and high-precision lead screw nut pairs, and walking control is accurate. According to the rotating curved surface digital ink-jet printing machine, multicolor digital ink-jet printing can be conducted on round bottles, ellipse double surfaces, square bottle multiple surfaces, irregular shape bottle multiple surfaces, spherical surfaces and external boss revolved body products. The vertical movement of the lifting worktable, the horizontal movement of digital ink-jet printing heads and the rotation movement of a product are utilized to enable the product to be close to or far away from the digital ink-jet printing heads to be printed, and the digital printing machine is good in printing effect, convenient to change bottle, short in cycle and high in efficiency.
Owner:广州市申发机电有限公司
Balance mass orientation system for workpiece platform
InactiveCN101206410AEliminate motion reactionPrecise position controlPhotomechanical exposure apparatusMicrolithography exposure apparatusSpecial designIndependent motion
The invention provides a workpiece console quality balancing and locating system, which is used to reduce the vibration of the workpiece console in a lithography machine and comprises an X axis long stroke module and a Y axis long stroke module so that a silicon chip plummer can move independently in X and Y directions relative to the system frame; a rectifying and antishifting device is used to compensate the locations shifting of the quality balancing system frame in X, Y and Rz directions; a vertical slightly adjusting and gravity compensation device, which is arranged between the X axis long stroke module and the Y axis long stroke module and the loading microchecker, is used to support almost all static weight of the silicon chip micorchecker and also has the function of slight adjustment of the degree of freedom in Z, Rx and Ry directions. In the invention and specific to the exposure system of the photolithographic silicon chip of big diameter, a quality balancing method is adopted for the workpiece console so as to reduce and eliminate the horizontal reaction force of motion and the unfavorable effect on the exposure system due to the change of the system gravity; the vertical slightly adjusting and gravity compensation device of special design ensures the vertical vibration reduction and isolation as well the precise location function of the silicon chip loading microchecker.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD +1
Automatic four-color twelve-station complex curved surface digital rotation printing machine
InactiveCN106427209AAccurate position controlNo need to adjust the mechanical structureTypewritersColor printingElectric machinery
The invention discloses an automatic four-color twelve-station complex curved surface digital rotation printing machine. The printing machine comprises digital printing equipment, a control panel, a digital printing work table, a digital printing head, a manipulator system and a product tool position clamping system. Product rotation and face change, driving the digital printing work table, surface flame processing clamping and rotation, pre-positioning clamping and rotation and material loading and unloading manipulator motions are controlled through employing a servo motor and a high-precision screw nut pair, and precise moving control is realized. According to the machine, digital multi-color printing processing on circular bottles, elliptical double surfaces, square-bottle multiple surfaces, special-bottle multiple surfaces, spherical surfaces and revolving body products with outer bosses can be realized, vertical direction motion of the digital printing head and rotation motion of the product rotation mechanism are utilized to make the digital printing head be close to or away from product surfaces for printing, a problem that a revolving body curved surface with an outer boss can not be printed through a printer in the prior art can be solved through the digital printing machine, and the printing machine further has advantages of convenient bottle change, short period and high efficiency.
Owner:广州市申发机电有限公司
Regulating intracranial intravascular thrombus extraction device
The invention relates to a regulating intracranial intravascular thrombus extraction device. The thrombus extraction device is provided with an adjusting guide wire, a thrombus extractor and an outer fixing sheath, wherein one end of the thrombus extractor is fixedly connected with the outer fixing sheath through a fixer, and the other end of the thrombus extractor is fixedly connected with a head-end developer through a fixer; the adjusting guide wire is also fixedly connected to the head-end developer, penetrates through the outer fixing sheath and the thrombus extractor, and is fixedly connected with a handle; a knob and a graduated scale are arranged on the handle. The thrombus extraction device has the advantages that the operability is high, the position of the thrombus extractor can be accurately regulated, the diameter of the thrombus extractor can be intuitively controlled, and thrombus can be completely captured and prevented from falling off; the thrombus can be firmly fixed, and compared with a conventional self-expanding thrombus extractor, the thrombus extraction device is higher in controllability and safety; the adjusting guide wire is controlled to accurately control the position, extension position and withdrawal position of the thrombus extractor by the knob and the graduated scale, and errors are small.
Owner:SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
Preparation method of metal nanostructure
InactiveCN103668130AAvoid influencePrecise shape controlLiquid/solution decomposition chemical coatingUltraviolet lightsNanostructure
The invention discloses a preparation method of a metal nanostructure. The preparation method comprises the steps of (1) manufacturing a mask plate; (2) providing a clean and dry base plate, uniformly coating a positive ultraviolet photoresist on the base plate, and pre-baking to ensure that the positive ultraviolet photoresist is solidified to form a photoresist base plate; (3) overlapping the mask plate on the photoresist base plate, and performing exposure, development, residual adhesive removal and hardening under ultraviolet light to obtain a forming mold with shape grooves of a nanostructure graph; (4) depositing a metal in the forming mold by adopting a chemical synthetic method; (5) soaking the forming mold deposited with the metal in an acetone solution, and performing ultrasonic adhesive removal to obtain the metal nanostructure of the nanostructure graph. The preparation method disclosed by the invention is simple in process and high in efficiency; the shape, size and position of the prepared metal nanostructure can be accurately controlled, and the light extraction efficiency and light absorption efficiency of a metal nanostructure material are effectively improved.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +2
Lumber feed system with load responsive speed modulation
InactiveUS6220423B1Precise position controlAccurate flow regulationFeeding devicesControl devices for conveyorsVelocity modulationHigh rate
The disclosure describes a system to provide a steady supply of lumber pieces to a board separating device and insure the correct positioning of each lumber piece, at the proper time, thus allowing the separating device to function at a substantially higher rate than hitherto possible with previously known infeeding arrangements.
Owner:BID GRP TECH LTD +1
Full-automatic, rapid and efficient multi-color rotation hook face silk screen printing machine
The invention discloses a full-automatic, rapid and efficient multi-color rotation hook face silk screen printing machine. The printing machine comprises a control panel, a printing product lifting workbench, a mechanical arm system, a product tool position clamping system and a silk screen control system. Multiple silk screen printing plate control systems and multiple printing scraper control systems are included, wherein product rotating and face changing, printing product lifting workbench driving, surface photoelectric dust removal treatment, a feeding and discharging industrial robot and the arm action of a product transferring mechanical arm system are controlled by a servo motor and a high-precision screw-nut pair, and walking position control is accurate. The full-automatic, rapid and efficient multi-color rotation hook face silk screen printing machine can conduct multi-color silk screen printing on round bottles, double faces of oval bottles and multiple faces of square bottles, a printing product can be closely attached to a silk screen printing plate to be printed through the movement of the lifting workbench in the vertical direction, the horizontal movement of the silk screening printing plate and scrapers and the product rotation movement. The silk screen printing machine is good in printing effect, bottle replacing is convenient, the period is short, and efficiency is high.
Owner:广州市申发机电有限公司
Land leveler leveling control system, control method and land leveler
InactiveCN102304932APrecise position controlImprove work efficiencyMechanical machines/dredgersLeveling effectInput device
The invention relates to a land leveler leveling control system, a control method and a land leveler. The leveling control system comprises a datum plane generation device, a sensor, a controller, a target order input device and reference points, wherein the reference points and the land leveler are arranged at interval; the spatial position of reference points is calculated by a signal detected by the sensor and the controller; the scraper knife target position is calculated by being combined with an input target position information; and the control signal of the corresponding motion amountis calculated and is sent to a driving mechanism in the land leveler. Because the reference points are arranged in the whole control process, the position of the scraper knife is controlled in space to have a relative reference object. The motion amount of each oil cylinder and each motor in the land leveler is accurately controlled to precisely control the position of the scraper knife. The landleveler provided with a leveling control system can perform the action on precisely controlling the scraper knife and improving leveling effect. With the leveling control method, a method for causingthe land leveler to effectively control leveling and improve the operation efficiency of the land leveler is provided.
Owner:SANY HEAVY IND CO LTD (CN)
Lamp for vehicle
The present invention provides a lamp for a vehicle, which can change the irradiation direction in any direction up, down, left and right, reduces the number of parts, and can accurately control the irradiation direction without applying an extra load to the drive unit. The vehicle headlamp (10) has: a lamp unit (30), which is arranged in a lamp chamber (21) formed by a lamp body (22) and a transparent cover (23) closing the front side of the lamp body, and facing forward irradiating light; and an irradiating direction adjusting device (50), which makes the lamp unit tilt up and down and left and right, and the lamp unit is suspended and supported in the lamp room in a state of being able to move up and down, left and right, and the irradiating direction adjusting device has an output shaft ( 51), which can move in the front-back direction and rotate in the left-right direction at the same time. The output shaft is connected to the lower end of the lamp unit, and the rotation in the left-right direction of the output shaft can be transmitted to the lamp unit. Rotation occurs between the axis and the luminaire unit.
Owner:KOITO MFG CO LTD
Structure of fast recovery diode (FRD) and manufacturing method thereof
ActiveCN103700712AIncrease the switching frequencyShort lifeSemiconductor/solid-state device manufacturingDiodeCharge carrierBody area
The invention provides a structure of a fast recovery diode and a manufacturing method of the fast recovery diode. The structure comprises a cathode metal layer, a cathode area located on the cathode metal layer and comprising a first conduction type, a drift area located on the cathode area and having the first conduction type, an anode area located on the drift area and having a second conduction type, and an anode metal layer located on the anode area, wherein a PN (North Pole) junction is formed at an interface of the drift area and the anode area, and bonding interfaces are formed at the PN junction and / or in a drift area and / or the anode area. The bonding interfaces are introduced, thereby forming a short life area in a fast recovery diode body area, and the position of the bonding interface is precisely controlled to accurately control the life distribution of a carrier in the fast recovery diode body area, and effectively improve the switching speed of the fast recovery diode, and simultaneously ensure the switch softness.
Owner:BYD SEMICON CO LTD
Electric wetting lens and forming method thereof
InactiveCN102253438AAvoid assembly position deviationSimple processLensElectricityElectrical polarity
The invention discloses an electric wetting lens and a forming method thereof. The forming method comprises the following steps of: providing a first substrate and forming a first transparent electrode on the first substrate; providing a second substrate and forming a second transparent electrode on the second substrate; forming a dielectric layer on the second transparent electrode; oppositely assembling the first substrate and the second substrate; clamping a polar liquid with photopolymerisable matters and a non-polar liquid with photopolymerisable matters between the first substrate and the second substrate; and irradiating the first substrate and the second substrate which are assembled to solidify the photopolymerisable matters in the polar liquid and the non-polar liquid so as to form a retaining wall structure between the first substrate and the second substrate. The electric wetting lens has the advantages of simplicity in preparation process and high product yield.
Owner:KUSN INFOVISION OPTOELECTRONICS
Lithium ion battery pole piece coating method and coating machine
ActiveCN1767235AAvoid prone to spacing changesAvoid spacing changesLiquid surface applicatorsCell electrodesPole pieceEngineering
The invention discloses a lithium ion cell pole tip applying method, which arranges the dressing section and the dead section by the design parameter interval of the pole tip and puts foil bend to start continues applying on the width direction of the coating machine headstock to obtain the pole tip extended on the band direction of the dead margin area. The invention also provides a coating machine which can achieve the method.
Owner:BAK INT TIANJIN +1
Annular focusing light spot realization method and realization device thereof
ActiveCN106950705APrecise position controlPrecise size controlOptical elementsSpatial light modulatorLight spot
The invention discloses an annular focusing light spot realization method. The method includes that a laser beam is expanded and collimated and then the expanded and collimated laser beam is converted into a linearly polarized laser beam; the laser beam phase modulation is carried out on the linearly polarized laser beam after the collimation and expansion by means of a reflective pure phase spatial light modulator; the linearly polarized light is imaged after the phase modulation to the rear aperture plane of a focusing object lens via a 4F imaging system; the object lens is used to focus the phase-modulated incident linearly polarized laser beam, a plurality of focal points are generated on the circumference in the focal plane area, and the azimuthal spacing between the focal points equal is equal; an annular light spot is generated when the circumference radius is reduced to a wavelength lambda, and the size of the annular light spot is continuously decreased when the circumference radius r changes until a solid light spot is formed; and when a plurality of phase modulation graphs are calculated, the change in the corresponding position movement of each graph is small, and the phase map of the spatial light modulator is updated so that the annular light spot moves continuously. The annular focusing light spot realization method realizes the non-vortex plane linearly polarized light focusing to generate the dynamic annular light spot which is accurate in position and size control.
Owner:唐山斯腾光电科技有限公司
Corrugated pipe forming device and corrugated pipe machined through corrugated pipe forming device
The invention discloses a corrugated pipe forming device based on electromagnetic forming. The corrugated pipe forming device is characterized by comprising a rectifier (1), a resistor (2), a switch (3), a capacitor (4), a boosting transformer (5), an upper fixing plate (6), fixing bolts (7), a pressing block (8), a mold base (9), a constraint mold (11), a coil (12), a lower fixing plate (13), a T-shaped platform (14), trapezoid holes (15), exhaust holes (16), fixing grooves (17) and a wire hole (18). In addition, a thin-wall energy-absorption corrugated pipe forming method based on the electromagnetic forming principle has the advantages that the number of machining processes is small, machining efficiency is high, forming accuracy is high, the pipe forming speed is high, a thin-wall metal pipe can be formed at a high strain rate, the plasticity of metal materials is improved greatly, and the yield strength of the materials is enhanced substantially. By changes of the shape of the constraint mold in the forming device, different wave shapes can be formed, and machining flexibility of the forming device is high.
Owner:HUNAN UNIV
Motor controller for track traffic platform gate
ActiveCN102900300AAvoid interferenceImprove securityPower-operated mechanismDigital signal processingControl signal
The invention relates to a motor controller for a track traffic platform gate. The motor controller comprises a power supply part, a digital signal processing part, an electric current sampling part, a motor driving part, a relay output part, an external control signal input part and a data storage display part; the power supply part is used for respectively supplying electric currents of needed voltages to the digital signal processing part, the electric current sampling part, the motor driving part, the relay output part and the data storage display part; the electric current sampling part, the motor driving part, the relay output part, the external control signal input part and the data storage display part are respectively connected with the digital signal processing part through electrical signals; the motor driving part is also connected with a motor through an electric wire; and the relay output part is also connected with an upper computer through the electrical signals. The motor controller has the advantages of safety, reliability, strong driving capability, wide application, accurate control, stable running, low cost and the like.
Owner:SHANGHAI SANYI MOTOR CONTROL SYST TECH
Image-vision-based automatic calibration method of clean robot
ActiveCN103192386APrecise position controlAccurate CalibrationProgramme-controlled manipulatorLaser transmitterRobotic arm
The invention discloses an image-vision-based automatic calibration method of a clean robot. The automatic calibration method comprises the following steps: a, placing a robot to be calibrated below a camera to enable an original point of a robot body coordinate system to be radiated by laser; b, acquiring the position of an optical center of the laser transmitted by a laser transmitter; c, acquiring a position transformational matrix T between the original point of the optical center of the laser and the robot body coordinate system; d, operating the mechanical arm of the robot, and acquiring the position of a farthest end point of a tray; e, calculating deviation between each practical moment and a design value; and f, converting the deviation into the robot body coordinate system through the position transformational matrix T, and recording the converted deviation data into a robot motion control module. When the automatic calibration method is used, the measurement precision can be 0.2 mm, and the accurate calibration of the mechanical arm is realized; and in addition, the automation degree is high, the measurement and the calibration are completely accomplished by a computer and are finally stored in the robot motion control module.
Owner:SHENYANG SIASUN ROBOT & AUTOMATION
Automatic roll stamping seal device
ActiveCN101786386AReduce the chance of spin-stop failureConsistent speedStampingInlet channelDrive motor
The invention discloses an automatic roll stamping seal device which can accurately detect the rotating position of a rolling seal; the automatic roll stamping seal device comprises a paper feed channel, a seal rotating shaft and a roll stamping rotating shaft which are arranged at two sides of the paper inlet channel, a rolling seal is arranged on the seal rotating shaft, a roll stamping roll which is arranged corresponding to the rolling seal is arranged on the roll stamping rotating shaft, the seal rotating shaft and the roll stamping rotating shaft are connected with a drive motor in a transmitting way, a position sensor is arranged on the rack beside the rolling seal, and an encoder is connected with the seal rotating shaft; all around monitoring can be carried out within 360-degree range of the seal rotating shaft, and the control position is more accurate; in addition, the position of the rolling seal can be accurately tracked owning to the arrangement of the encoder; a mechanical damping part in the background technology can be cancelled, the rotation and halt of the rolling seal can be accurately controlled by a motor, so as to improve the control reliability and reduce the effectiveness lose odds of the rotation and halt of the rolling seal; the device is particularly suitable for being popularized and applied to the automatic seal device.
Owner:CHENGDU JIAYITONG INFORMATION TECH CO LTD
Laser anti-corrosion and wear-resistant process for trunnion of movable guide vanes of turbines
InactiveCN101629289ASolve technical bottlenecksLow dilution rateMetallic material coating processesNumerical controlWear resistant
The invention relates to a laser anti-corrosion and wear-resistant process for the trunnion of movable guide vanes of turbines. The process comprises the following steps: useing liquid penetrant test detection to detect the whole guide vane trunnion so as to determine cracks, air cavities and slag in the erosive wear area; and making balancing weights according to the shape and poise error of the guide vanes; removing the fatigue layer of the erosive wear area of the guide vanes; and carrying out cleaning technology treatment after clearing. A special powder feeding device is used to carry out laser cladding for special alloy materials which have good fusion property, high bonding strength and good anti-corrosion and wear-resistant properties. The specific parameters of the cladding process are as follows: the laser power is 3,200W, the spot diameter is 3.2 mm, the latus spots are used, the scanning speed of numerical control programming is 700 mm / min, the lapping rate is 25%, argon protection is used, and the alloy materials are delivered into the melting bath of laser cladding in an angle of 15 DEG by a special laser powder feeding device in a synchronous powder feeding way. All movable guide vanes to be repaired in the invention do not need sending to the manufacturer for treating, huge transport expenditure is not needed, and the whole repair period can be greatly shortened.
Owner:岳阳大陆激光技术有限公司
Airbag device for vehicle
InactiveUS20070216142A1Sufficient expansion dimensionPrecise position controlPedestrian/occupant safety arrangementEngineeringHigh pressure
An airbag device for a vehicle including an inflator that generates high-pressure gas upon receiving an impact; and an airbag that deploys between an occupant and a vehicle body side portion from a folded state upon receiving the high-pressure gas from the inflator, wherein the airbag has a deployment restriction member that restricts the height of the airbag in the vehicle body vertical direction during deployment.
Owner:HONDA MOTOR CO LTD
Radiotherapy equipment and radiotherapy system with radiotherapy equipment
InactiveCN103272338AImproved dose distribution capabilitiesMeet clinical needsX-ray/gamma-ray/particle-irradiation therapyMulti leaf collimatorEngineering
The invention discloses radiotherapy equipment and a radiotherapy system with the radiotherapy equipment. The radiotherapy equipment comprises a fixed cabinet, a rotary support, a main collimator, a radiation source and a multi-leaf collimator, wherein the rotary support is rotationally arranged on the fixed cabinet, and is provided with the radiation source, the main collimator is arranged on the radiation source, the multi-leaf collimator is mounted on the fixed cabinet and comprises multiple parallel leaf groups, each leaf group comprises a first leaf, a second leaf, a first linear motor and a second linear motor, the first and second leaves are oppositely arranged, the first linear motor is connected with the first leaf to drive the first leaf to move, and the second linear motor is connected with the second leaf to drive the second leaf to move. The radiotherapy equipment adopts the linear motors to drive the leaves to move, thus realizing the accurate control on the speed and position of the leaves and further improving the curing precision and efficiency.
Owner:TSINGHUA UNIV
Multi-phase honeycomb ceramic and steel composite material and preparation method thereof
The invention discloses a multi-phase honeycomb ceramic and steel composite material and a preparation method thereof. The composite material uses steel as matrix and multi-phase honeycomb ceramic as enhanced phase, and adopts a casting method to composite the matrix and the enhanced phase into one; when manufacturing, firstly, surface pretreatment is carried out on ZrO2-Al2O3 multi-phase honeycomb ceramic; secondly, ZrO2-Al2O3 multi-phase honeycomb ceramic is fixed in a sand mould; and finally, smelted steel metal liquid is cast into a casting mould, and the multi-phase honeycomb ceramic and steel composite material are obtained after cooling and solidification molding. The composite material has low cost, good abrasive resistance and toughness, is mainly used for crushing materials in the fields of metallurgy, building materials, mines, refractory materials and electric power and the like and grinding wear-resistant parts of equipment.
Owner:ZHENGZHOU UNIV
Integrated circuit package body and manufacturing method thereof
InactiveCN101276820APrecise position controlReduce manufacturing costSemiconductor/solid-state device detailsSolid-state devicesEngineeringIntegrated circuit design
The invention provides an integrated circuit package body and a manufacturing method thereof. The integrated circuit package body comprises an integrated circuit chip whose upper surface is formed with a sensitive element; a joint bonding pad formed on the upper surface of the integrated circuit chip and connected with the sensitive element electrically; a first blocking wall formed between the sensitive element and the joint bonding pad; and a conductive layer formed on the sidewall of the integrated circuit chip and connected with the joint bonding pad electrically. The first blocking wall of the invention can block the bonding agent to overflow to the area of the sensitive element, improving the qualified rate of manufacturing process of the integrated circuit package body.
Owner:XINTEC INC
Traction type ocean environment automatic monitoring system driven by wave energy
InactiveCN102384015ARealize energy self-supplyStable long-term continuous operationBatteries circuit arrangementsWaterborne vesselsAutomatic controlEngineering
The invention discloses a traction type ocean environment automatic monitoring system driven by wave energy, which is composed of a sea surface cabin, an oscillation float, a measuring platform, a permanent magnet generator, a direct current tractor, a lead storage battery, an automatic control device, a wireless communication device and the like. The wave energy is converted into electric energyby utilizing the relative motion of the sea surface cabin and the oscillation float. Charging and discharging of the lead storage battery are completed under control of the automatic control device. The automatic control device gives orders to drive the direct current tractor to rotate positively or negatively so as to drive the measuring platform to float upwards and dive downwards circularly. The measuring platform can continuously measure ocean environment parameters during a moving process, and the wireless communication device is utilized for automatically uploading the measured data to a monitoring center on the bank. The traction type ocean environment automatic monitoring system can achieve self energy supplement, accurate control of speed and location of the measuring platform and uploading of the measured data of ocean environment parameters in real time, and has great advantages compared with a traditional ocean environment monitoring device.
Owner:JIMEI UNIV +1
Method for achieving synchronous control of two shafts
ActiveCN104238447ADoes not affect the scan cycleQuick responseNumerical controlSynchronous controlMovement control
The invention relates to a method for achieving synchronous control of a main shaft and an auxiliary shaft by means of a PLC. The method aims to achieve synchronous control of the two shafts on the premise of low cost. According to the technical scheme, a complex function needing to be achieved through multiple steps in a high-functioning medium or large PLC of other companies just needs to be realized through one instruction in the small PLC used in the method. If the complex function is achieved by using multiple instructions, the sampling period depends on the scanning period of the PLC in most cases; when a PLC program is large, the scanning period is very long, consequently a response lag of the auxiliary shaft is caused, the output pulse interval is large, a motor runs unstably, and positional accuracy is poor. The synchronization instruction is convenient to use and good in synchronization performance. Meanwhile, the execution efficiency of the PLC is greatly improved, and the scanning period of the whole PLC is shortened. Thus, the industrial movement control response is rapider, and position control is more accurate.
Owner:SHANGHAI ELECTRICAL APP RES INST +1
Four-rotor aircraft speed control method based on integral variable structure control
InactiveCN103217981APrecise position controlImprove robustnessAttitude controlDigital signal processingFly control
The invention provides a four-rotor aircraft speed control method based on integral variable structure control, and relates to the technical field of embedded systems, digital signal processing, microminiature unmanned aerial vehicles and the like. Firstly, building a four-rotor aircraft experimental platform, wherein the platform is an aircraft rack constructed by carbon fiber materials and a designed flight control embedded system; secondly, designing a flight control system by adopting a hierarchical designing scheme, wherein the flight control system comprises an upper-layer control module and a lower-layer control module; thirdly, achieving aircraft attitude control in the lower-layer control module, achieving speed control in the upper-layer control module; and fourthly, using an integral variable structure control algorithm in the attitude control and the speed control. According to the four-rotor aircraft speed control method based on the integral variable structure control, a prithvi air defence exercise (pade) approximation algorithm, a Kalman filtering algorithm and the integral variable structure control algorithm are used, algorithm complexity of the system is reduced greatly through the pade approximation algorithm; system state quantity which can not be obtained directly through sensors is obtained through the Kalman filtering algorithm; and lastly an integral variable structure controller is designed, wherein the integral variable structure controller has strong robustness and anti-interference performance.
Owner:SOUTHEAST UNIV
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