76results about How to "Adjustment time" patented technology

The invention discloses a current-sharing circuit for high-power parallel IGBT modules. The circuit comprises a controller and a plurality of current-sharing control branches connected in parallel, wherein each current-sharing control branch comprises a first current detection circuit, a second current detection circuit, a first drive circuit, a second drive circuit and a transformer T; the firstcurrent detection circuits and the second current detection circuits are used for detecting output current of the first IGB module and the second IGBT module separately to obtain two paths of detection current transmitted to the controller; the controller generates two paths of control signals according to the magnitudes of the two paths of detection current; the two paths of control signals are driven through the first drive circuits and the second drive circuits separately and then transmitted to the transformers T; and the transformers T synchronously output the two paths of control signalsto grids of the first IGBT module and the second IGBT module. According to the current-sharing circuit, the problem of imbalance of static current-sharing in a conducting state and dynamic current-sharing in a switching state is solved while the cost of a control driver is not greatly increased.

The invention discloses a remote stage lighting control system. The remote stage lighting control system comprises a lighting device, a communication module, and a remote control module. The lighting device comprises a lighting collecting module, a lighting regulating module, and a control module. The remote control module comprises a command input module, a simulation module, and a main control module. The control module is respectively connected with the lighting collecting module and the lighting regulating module. The control module is connected with the main control module by the communication module. The main control module is respectively connected with the simulation module and the command input module. The effect of the on-site stage lighting is collected by the lighting collecting module, MAX simulation software is used for simulating the effect of the stage lighting, and the lighting regulating module is used for regulating the brightness, color, flash time and rotation angle of the stage lighting. The time for regulating the lighting by a worker in the field is saved, and the effect of the stage lighting is greatly improved. The remote stage lighting control system has the characteristics of convenience, efficiency and fastness.

The invention relates to a similar material for a fault mud burst model test and a preparing method thereof; the similar material comprises the components by weight: 1 part of a talcum powder, 2-7 parts of sand, 0.8-1.6 parts of gypsum, 0.2-0.6 part of bentonite, 0.01-0.4 part of liquid paraffin, and 0.2-0.7 part of mixing water. The preparing method comprises the steps: according to the proportion, weighing the talcum powder, sand, gypsum, bentonite and liquid paraffin; mixing evenly the talcum powder, sand, gypsum and bentonite in a stirrer; adding the mixing water, and fully stirring; adding the liquid paraffin and stirring; putting the mixed material into a molding die, and carrying out compaction molding; placing the molded material in a ventilated dry place for 24-36 h, and thus obtaining the similar material for the fault mud burst model test. The similar material can be slowly weakened and disintegrated under a water action, the disintegration performance can be changed through changing the composition, and a possibility is provided for fault mud burst in a process of real simulation of tunnel excavation.

The invention relates to a wireless channel access scheme which is characterized in that a hidden / display receiving terminal waits according to the time information of RTS or CTS frame in a node pair of the communication when the hidden / display receiving terminal and a deaf transmitting node appear in the nodes of a network because of competing for channels and relays the transmitting time; when an NAV calculagraph of the hidden / display receiving terminal is 0 and the hidden / display receiving terminal detects that the channel is idle, the hidden / display receiving terminal transmits a CCS control frame to the corresponding deaf transmitting node and informs the deaf transmitting node for immediate communication; and the deaf transmitting node determines that the channel of the receiving end is idle and carries out communication immediately after receiving the CCS control frame. In the invention, the new control frame CCS is introduced on the basis of IEEE802.11DCF, the time for the node to access to the channel can be effectively adjusted, the blindness of channel access caused by inconsistent state information of the channel of the receiving nodes and transmitting nodes is reduced, the probability of conflict packet loss is reduced, and the network throughput and the fairness between flows are enhanced.

The invention relates to the technical field of heat coating, in particular to a heat coating device and a heat coating process method. The heat coating device comprises a workpiece grabbing mechanism, a rotating mechanism and a fluidized bed. The fluidized bed comprises a dust collection hood, a fluidized bin arranged in the dust collection hood and a first fluidized plate arranged in the fluidized bin. The fluidized bin is divided by the first fluidized plate into a fluidized pool and a first air inflation cavity up and down. The first inflation cavity communicates with the fluidized pool through micropores in the first fluidized plate. Feeding openings are formed above the fluidized pool. The first air inflation cavity is provided with a first air inlet. The workpiece grabbing mechanismcan grab to-be-coated heated workpieces, and the to-be-coated portions of the workpieces are stretched in or moved out of the fluidized pool. The rotating mechanism can enable the workpieces and thefluidized pool to rotate oppositely. The heat coating device has the advantages that the fluidization effect of heat coating powder is good, the workpiece immersion procedure in the heat coating process is quite reasonable, the workpieces can be in sufficient contact with the heat coating powder in a fluidized state, and stability of heat coating quality can be improved.

The invention discloses a grinding classification process operation control method based on an inverse decoupling active-disturbance-rejection internal model technology. In the method provided by theinvention, by means of combination of inverse decoupling, a linear active-disturbance-rejection controller and internal model control, decoupling control is executed for an intricate grinding classification system which has the characteristics, such as multiple variables, strong coupling and great time lag, wherein the strong coupling characteristic among the multiple variables in the grinding classification system is removed through the inverse decoupling method, two independent single variable loops are formed, time lag compensation is executed for decoupled subsystems through the internal model control method, the linear active-disturbance-rejection controller restrains adverse effects on the system caused by external disturbance and uncertainty factors, and feedback controllers F1(s) and F2(s) are used for improving disturbance rejection property and robustness of the system. The method provided by the invention realizes decoupling control of the multivariable grinding classification process, and improves robust stability of the system.

The invention provides a battery piece printing device and method and a solar battery production system, and relates to the technical field of automation. The battery piece printing device comprises atransmission mechanism, a workbench, a piece feeding station, a workstation and a piece discharging station, and the piece feeding station, the workstation and the piece discharging station are sequentially arranged along the conveying track of the transmission mechanism; a suction cup mechanism comprises a table top, a control assembly and a vacuum pipeline. A through hole is formed in the tabletop; the vacuum pipeline is communicated with the through hole; the control assembly is used for controlling the vacuum degree formed by the suction cup mechanism on the table top. When the table topmoves to the piece feeding station, the suction cup mechanism adsorbs the battery piece at a first vacuum degree, when the table top moves to the piece discharging station, the suction cup mechanismadsorbs the battery piece at a second vacuum degree, and when the table top is located between the piece feeding station and the piece discharging station, the suction cup mechanism adsorbs the battery piece at a third vacuum degree; and the stability of the battery piece conveying process is improved, and the production efficiency and the product yield are improved.

The invention relates to an automatic timing alternative positive and reverse rotation dual-interlocking control line for a motor and belongs to the field of electrical control. A control loop mainly comprises a button switch SB1, a button switch SB2, a relay KM3, a contactor KM1, a contactor KM2, an electrification delay time relay KT1 and an electrification delay time relay KT2. Intrinsic normally open contacts and normally closed contacts in the electrification delay time relays and respective auxiliary normally closed contacts of the contactor KM1 and the contactor KM2 are combined and then respectively serially connected into respective branches of coils of the contactor KM1 and the contactor KM2 to form a dual-interlocking circuit. Short circuit of a main control loop of the motor during operation and automatic switching of positive and reverse rotation of the control loop of the motor can be effectively prevented, and positive and reverse rotation time of the motor is adjustable. In addition, the circuit structure is simple and operation is convenient.

The invention relates to high-molecular automatic adhering and wrapping rubber powder for improving the safety performance of an automobile tire. The high-molecular automatic adhering and wrapping rubber powder comprises the following components in percentage by weight: 42-62 percent of a thermoplastic elastomer, 34-54 percent of a thickening agent, 3-8 percent of a plasticizer, 0.5-1.5 percent of an antioxidant, 0-15 percent of a filler, 0-1 percent of a catalyst and 0-3 percent of a curing agent. Through the technical scheme provided by the invention, a common automobile tire can be upgraded to be an automobile tire with temperature resistance, pressure resistance, bullet resistance, leakage resistance, explosion resistance and puncture resistance.

The invention relates to a macromolecular self-sealing tire leakage repairing material. The macromolecular self-sealing tire leakage repairing material contains the following ingredients in percentage by mass: 48% of thermoplastic elastomer, 36% of tackifier, 5% of plasticizer, 1% of antioxidant, 1% of cross-linker, 8% of filler and 1% of catalyst. The macromolecular self-sealing tire leakage repairing material provided by the invention has bullet-proof, leakage-proof and prick-resistant properties.

The invention discloses a Zr-Cu-based amorphous alloy compound electrode material and a preparation method thereof. The material comprises an amorphous core at the middle, nano-porous copper layers ontwo sides of the core and nickel hydroxide particles on the copper layers. The amorphous core is made from copper-zirconium alloy; the widths of the tough belts and hole diameters of the nano-porouscopper layers are 50-100nm, and the thicknesses of the nano-porous copper layers are about 2-3 microns; the sizes of the deposited nickel hydroxide particles are about 200-400nm, and the loading capacities of the same are 0.3-1.0mg / cm<2>. The copper-zirconium alloy comprises 30-70% of Zr and 70-30% of Cu. According to the Zr-Cu-based amorphous alloy compound electrode material and preparation method thereof provided by the invention, the electrochemical deposition condition can be adjusted through adjusting the voltage, time, electrolyte concentration and the like of electrochemical deposition, the deposition time is relatively short, heating is not needed, and the process is visible; and the prepared compound material can be directly applied to the electrode material of the supercapacitor.

The invention discloses a high-voltage power transmission line foreign matter cleaning robot and a high-voltage power transmission line foreign matter cleaning method, and aims to solve the problem offoreign matter accumulation on a power transmission line. The high-voltage power transmission line foreign matter cleaning robot comprises: a cleaning unit, wherein the cleaning unit comprises a first half cylinder and a second half cylinder which are hinged, fixing plates are fixed to the first half cylinder and the second half cylinder, a first bolt assembly is arranged between the two fixing plates, when the two fixing plates make contact, the first half cylinder and the second half cylinder define a complete cylinder, crushing teeth are arranged on the inner wall of the first half cylinder and the inner wall of the second half cylinder, and a swing ball is connected to the outer wall of the first half cylinder through a lifting rope; a driving unit, wherein the driving unit comprisesa pair of driving half shells, walking wheels rotationally mounted on the inner walls of the driving half shells and a driving mechanism for driving the walking wheels to rotate, wherein mounting plates are fixed to the end faces of the first half cylinder and the second half cylinder, and positioning mechanisms are arranged on the side walls of the driving half shells; and a pull rope fixedly connected with the swing ball. With the robot and the method, the foreign matter on a power transmission line can be efficiently removed.

The invention relates to a high voltage starting circuit with adjustable starting time. A drain electrode of a first N-channel metal oxide semiconductor (NMOS) transistor is connected to a first end of a first resistor, a grid electrode of a second NMOS transistor and a negative end of a diode. A source electrode of the first NMOS transistor and a positive end of the diode are connected to a power ground. The drain electrode of the second NMOS transistor and a second end of the first resistor are connected to an SW port of a chip. The source electrode of the second NMOS transistor and the first end of a second resistor are connected to a power supply port VDD of the chip. The second end of the second resistor is connected to the first end of a third resistor and a first input end of a first comparator. An output end of the first comparator is connected to a first counter. The output end of the first counter is connected to a pulse width modulation (PWM) controller. The first comparator detects a VDD voltage level and generates a control signal Ctrl1. The first counter counts the rising edge or the falling edge of the Ctrl1, and generates initial start enable signals and restart enable signals which flexibly adjust the time of power-on starting of the chip and the time of restarting of the chip in an unusual situation.

The invention relates to a method and a device for testing tactile viscosity of an adhesive. The fixing device is beneficial to conveniently fixing various types of adhesive test pieces for quantitative test, and is beneficial to obtaining high-precision test data representing the tactile viscosity. The method, tactile viscosity of the adhesive in a non-room-temperature state can be measured. Themethod is advantaged in that the stress and the stress time of a bonding surface can be accurately and conveniently adjusted through the technical characteristics that a mass-adjustable assembly and an upper clamp fall off from the tension equipment in time and then are connected. By adopting the method, test pieces can be prepared and replaced easily, and the method can be suitable for mounting and testing various adhesive type test pieces.

The invention discloses a rotatable multiple-combination teaching board, which comprises a base, a support plate, a blackboard, an interaction whiteboard, a first support rod, a second support rod and a rolling bearing, wherein one end of the first support rod is connected with the base, the other end of the first support rod is connected with an outer sleeve of the rolling bearing, the blackboard is rotationally connected with one end of the second support rod through an inner sleeve of the rolling bearing, the support plate is arranged at the other end of the second support rod, a groove is formed in the upper end of the second support rod, the support plate is connected with the second support plate through the groove, the blackboard is arranged at one surface of the support plate, and the interaction whiteboard is arranged at the other surface of the support plate. The rotatable multi-combination teaching board has the advantages that by skillfully combining the blackboard and the whiteboard, the space occupation area of the teaching board is greatly reduced, the teaching requirements of different teachers are met, the use time of the blackboard and the whiteboard can be freely adjusted, and the discomfort of eyes caused by the eyes facing the strong light for a long time is avoided.

The invention discloses a photoelectric angle measuring device, which relates to the technical field of measuring instruments and solves the problem of low measurement accuracy of an object's inclination angle in the prior art. A laser emitter is provided, and an illuminance meter located on the laser path emitted by the laser emitter is provided. A filter that can rotate around its own axis is arranged on the laser path between the laser emitter and the illuminance meter. The laser path and the filter The surface is vertical, and the light transmittance of each part of the filter is different. The filter is fixed in the accommodation chamber through the bracket, and the edge of the filter is provided with a counterweight. The accommodation chamber is also equipped with a microprocessor and a power module. A display screen is arranged outside the chamber, and the illuminance meter, the power supply module, and the display screen are respectively electrically connected to the microprocessor. The invention uses electronic technology to calculate the inclination angle of the object, and has the advantage of high measurement accuracy.

The invention relates to a one-year-two-harvest cultivation method for water bamboo. The cultivating method comprises the following steps: preparation before autumn and winter cultivation of water bamboo, autumn and winter field planting of water bamboo, autumn and winter fertilizer application of water bamboo, plastic film covering, autumn and winter field management of water bamboo, autumn and winter ripening of water bamboo, spring and summer cultivation of water bamboo and spring and summer field management of water bamboo. According to the one-year-two-harvest cultivation method for water bamboo, provided by the invention, the purposes of large-scale industrial production, adjustment on market season and time-to-market of the water bamboo, increase of yield and income increase are achieved.

The invention discloses a polarity reversing test device and a test method thereof for a DC filter capacitor. The test device consists of a test power supply system, a DC reversing test system, a measurement and control system and a grounding protection system. The two ends of a transformer inside the test power supply system are connected through a switching switch and a rectifying silicon stackto provide the positive and negative polarity voltage for a capacitor. The reversing test system is connected with the test power supply, wherein the polarity reversing of different times and voltagesof the capacitor can be realized by utilizing the energy storage of the capacitor and through adjusting the inductance and the resistance. The measurement and control system controls a switch of thedevice to realize the cyclic reversal of positive and negative polarities, and collects data such as the voltage and current data of the capacitor. The grounding protection system is used for discharging residual charges of the loop, and protecting the safety of both the system and human bodies. According to the test device, the characteristic of the self energy storage of the DC filter capacitoris utilized, so that the polarity reversing of the capacitor under the high-voltage and high-current condition can be realized by adopting the large-current rectifying silicon stack. The time of the reversing test can be smaller than 10 ms.

The invention relates to a lubricant pump unit (P) for lubricating the cylinders in precise time with the cycle in internal combustion engines (M) such as diesel engines. Said pump unit contains a working piston (22), which drives several metering pistons (25) that are allocated to lubricating point connections and can be driven back and forth in feed and return cycles by means of a working stroke that can be adjusted to meter the supply of lubricating oil, a magnetically actuated control valve (V) being provided in a control oil circuit of the working piston. The working piston (22) is subjected in turn to a hydraulic pressure both in the feed cycle and the return cycle by the control oil circuit.

The invention discloses a terminal traction upper limb rehabilitation training device. In the rehabilitation training, the upper limb forearm and the hand of a patient are fixed on the arm support andthe handle of a robot, and the arm of the robot drives the upper limb terminal of the human body so as to drive the upper limb to finish various rehabilitation training modes in the horizontal planeand the sagittal plane of the human body. The device is jointly provided with two motors and a single-action air cylinder to realize driving, wherein a first joint motor drives the big arm to swing relative to a stand column, a second joint motor drives the forearm to swing relative to the big arm through transmission of a second synchronous belt, and the single-action air cylinder drives the terminal of the robot to carry out vertical linear movement. By the use of a servo closed-loop control system, the gesture, the movement range and the training strength of the upper limb of the human bodycan be accurately controlled. A controller consists of a touch screen and a switch button, wherein through the touch screen, a rehabilitation training mode can be selected, the training of each rehabilitation mode is displayed by a corresponding dynamic schematic diagram so as to be convenient and easy in understanding, and according to the situation of the patient, the speed and the time of eachrehabilitation training mode and the movement range of each joint can be regulated.

The invention discloses an automatic control power switch used outdoors. The power switch comprises a box, a storage battery, an insulation post I, a circuit, insulation nuts, conductive pieces, a memory alloy, an insulation post II, a central shaft, a roller, a scraper, a motor, a support and a solar cell panel, wherein the insulation post I and the insulation post II which are integrated are arranged in the box, the insulation nuts are arranged at top ends of the insulation post I and the insulation post II, the conductive piece clamped between two insulation nuts on the insulation post I is connected with the memory alloy, the memory alloy is also attached to the conductive piece at the top end of the insulation post II, the support is arranged in the box, the central shaft is placed on the support and sleeved with the roller, the scraper is arranged on the roller, one end of the central shaft is connected with the motor, and the motor is connected with the storage battery through a lead. The automatic control power switch used outdoors can connect and disconnect a line automatically and adjust connection and disconnection time of the line as required.

The invention relates to an elasticity-proof, leakage-proof and prick-resistant macromolecular material for automobile tyres. The elasticity-proof, leakage-proof and prick-resistant macromolecular material for automobile tyres comprises the following components in percentage by weight: 42-62% of a thermoplastic elastomer, 34-54% of a tackifier, 3-8% of a plasticizer, 0.5-1.5% of an antioxidant and 0-3% of a curing agent. According to the technical scheme provided by the invention, a common automobile tyre can be upgraded to into a high-temperature-resistant, low-temperature-resistant, elasticity-proof, leakage-proof and prick-resistant automobile tyre.

A controllable shock wave test device disclosed by the present invention comprises a gas storage tank, a quick-opening valve, a buffer assembly and an installation tank which are connected in sequence, the buffer assembly comprises a transition pipe, at least one flow limiting plate and a buffer pipe which are connected in sequence, the gas storage tank is provided with a gas inlet valve and a pressure relief valve, a test piece is installed in the installation tank, the gas storage tank is provided with at least one pressure sensor, and the pressure sensor is connected with the gas storage tank. And at least one shock wave sensor is arranged at each of two ends of the test piece in the mounting tank. The device is simple in structure and high in experiment efficiency, the action duration of shock waves can be adjusted according to test requirements, the device is completely different from a traditional TNT explosive shock wave test and a detonation type shock tube test, replacement of a rupture disk is avoided, the test progress is greatly accelerated, for a standard shock wave chamber test room, manpower needed by the test can be reduced by 70% or above, and the test efficiency is improved. The labor hour of a single laboratory is saved by more than 4000 hours per year, and the cost of more than 0.2 billion RMB can be saved for the same type of laboratories in the whole society every year.

The present invention relates to automatic adhering wrapping explosion-prevention polymer sealing rubber powder for improving vehicle tire performances. The automatic adhering wrapping explosion-prevention polymer sealing rubber powder comprises, by weight, 40-50% of a thermoplastic elastomer, 40-50% of a tackifier, 5-8% of a plasticizer, 0.5-1.5% of an anti-aging agent, 3-5% of a filler, and 1-3% of a foaming agent. With the technical scheme, the ordinary vehicle tire can be upgraded to the vehicle tire with characteristics of high-temperature resistance, low-temperature resistance, bullet resistance, leakage resistance and puncture resistance.

The invention relates to a grouting material. The grouting material is prepared by mixing silicate cement, hydroxyl ethyl methyl cellulose, natural guar gum, silica fume, glycine betaine and water in a weight ratio of (1-1.2):(0.001-0.008):(0.001-0.01):(0.1-0.2):(0.001-0.005):1. According to the grouting material, the slurry viscosity and condensing performance can be improved due to the interaction of silica fume, hydroxyl ethyl methyl cellulose and natural guar gum, the viscosity and strength can be further improved due to the glycine betaine and natural guar gum, the elastic performance can be regulated according to the condition, and the aqueous dispersion effect in various water qualities can be resisted.

The invention discloses a regular dormancy breaking method for dioscorea opposita thunb seed tuber. The regular dormancy breaking method comprises: naturally drying mature, pest-free and damage-free dioscorea opposita thunb tuber blocks in the sun, placing into a warehouse, and storing, wherein the cold storage time is determined according to a seeding time; and 7-10 days before seeding, taking out the dioscorea opposita thunb tuber blocks, carrying out outdoor air drying, cutting into segments according to the requirement, carrying out disinfection treatment with an agent, inducting germination with a chemical agent, placing in a sand pile and carrying out germination, or carrying out direct seeding germination, and achieving germination seedling emergence after 15-20 days. According to the present invention, with the method, the regular dormancy breaking can be achieved according to the planting time schedule, the dormancy breaking germination rate can achieve more than 90%, the seedling emergence rate is more than 85%, the planting season and the harvesting marketing time can be adjusted, and the economic benefits can be improved; and the seed source problem of the dioscorea opposita thunb in the southern China can be solved so as to seed in the winter while harvest in the summer, the early seeding seedling emergence in the northern region can be achieved, the effective growth period can be increased, and the yield and the quality can be improved.

The invention relates to the technical field of medicinal material processing, and discloses a medicinal material cutting device used for traditional Chinese medicine processing and based on a ratchet transmission principle. According to the medicinal material cutting device used for traditional Chinese medicine processing and based on the ratchet transmission principle, sliding bases are glidingly connected to the left side and the right side of the middle in a mounting shell; adjusting rotating discs are arranged in the positions, located at the front ends and the back ends of the sliding bases, in the mounting shell; intermittent sliding grooves are formed in the sliding bases; and intermittent sliding blocks are glidingly connected in the positions, located at the front ends and the back ends of the intermittent sliding grooves, in the sliding bases. When the sliding bases move, connecting push plates connected with the sliding bases are driven to transversely move, when the connecting push plates move towards the inner side, limiting stop blocks are extruded, then sliding columns are pushed to move towards the outer side, shearing pieces are opened at the moment, and when the connecting push plates move towards the outer side, the sliding columns move towards the inner side, the shearing pieces get close at the moment, and the shearing pieces are driven to intermittently fit for shearing while the intermittent movement is repeated.

A lower feed mechanism 10 of a sewing machine comprises a feed arm 20 with a head for supporting the feed dog 11 being so supported as to swing in a vertical direction and in a feeding direction, a feeding and rocking means 30 for rocking the feed arm along the feeding direction, and a vertical rocking means 40 for vertically rocking the feed arm 20. In the lower feed mechanism, an elliptic motion is applied to the feed dog by the feeding and rocking means and the vertical rocking means. The vertical rocking means is equipped with an arm member 46 which transmits force by the principle of leverage. The driving force for vertical swing is applied to the feed dog via the arm member.

The invention relates to the technical field of food machining devices, in particular to a slicing device used for making dried kiwi. The slicing device comprises a screening machine, a peeling device, a cleaning device and a slicing device body; the inlet end of a peeling pipeline is connected with a discharging opening of the screening machine, the peeling device comprises the peeling pipeline which is placed in an inclined manner and is of a hollow interlayer structure, the peeling pipeline comprises a first interlayer and a peeling blade, the first interlayer is provided with a steam inletand a steam exhaust hole, the cleaning device comprises a conveying device and a washing device, the conveying device is located at the outlet end of the peeling pipeline, and the washing device is used for washing kiwi fruits on the conveying device, and the slicing device body is used for slicing the peeled kiwi fruits. According to the kiwi fruit peeling device, through steam, the surfaces ofthe kiwi fruits are instantly cured to achieve peeling, and slicing can be achieved.