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37results about How to "Stable alignment" patented technology
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Biquaternion communication-in-motion antenna control method and system based on MEMS inertial navigation
ActiveCN104064869AGuaranteed uptimeStable alignmentCosmonautic vehiclesCosmonautic partsControl flowGyroscope
The invention provides a biquaternion communication-in-motion antenna control method based on MEMS inertial navigation. An antenna control quaternion is introduced on the basis of a navigation posture quaternion. In each interrupt cycle of a navigation computer, a rotation vector of a carrier relative to an ideal platform coordinate system is measured through a gyroscope to update the two quaternions. In each filtering cycle, errors of the navigation posture quaternion are modified through Kalman filtering. According to the relation between postures determined through the two posture quaternions, an antenna control instruction angular speed is determined. Finally, a servo system is controlled to rotate through an antenna servo control angle obtained through conversion by means of antenna control quaternion postures. According to a biquaternion communication-in-motion antenna control system based on MEMS inertial navigation, the control method serves as a control flow, and precise control of communication-in-motion antenna orientation can be achieved. By means of the method and the system, impact caused by unstable of the navigation posture quaternion to a communication-in-motion antenna servo system can be effectively avoided in the Kalman filtering transient process, and alignment time of a communication-in-motion system is effectively shortened.
Owner:BEIJING AEROSPACE WANDA HIGH TECH CO LTD
Backlight module
ActiveCN102661550AImprove stabilitySimple structurePoint-like light sourcePlanar/plate-like light guidesBackplaneEngineering
The invention provides a backlight module which comprises a back plate, a light guide plate, a backlight source and a support element, wherein the light guide plate is arranged in the back plate; the backlight source is arranged in the back plate; and the support element is arranged in the back plate and supports the light guide plate and the backlight source. The backlight module provided by the invention uses the support element to support the backlight source and the light guide plate simultaneously, thus the backlight source and the light guide plate form the stable counter-point relationship, the stability of light coupling is increased, and the backlight module is simple in structure, is low in cost, and is beneficial to realization of thinning.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Connector system for in-line connection of freestanding partitions
A partition system includes adjacent partitions that have aligned top frame members with abutting and horizontally aligned cantilevered end sections. An in-line connector system includes a flat top connector and a U-shaped bottom connector that mateably span between the cantilevered end sections and that engage top and bottom surfaces, respectively, on the top frame members. Specifically, the top connector fits into a cavity in a top of the top frame member. The bottom connector includes a bottom wall and opposing sidewalls that matingly receive and engage bottom and side surfaces of the cantilevered end sections. The connectors combine with a beam-like strength that holds the cantilevered end sections in a particularly stable in-line condition.
Owner:STEELCASE DEV INC
Asymmetrical locking tube
A protective tubing assembly having male and female connectors integrally formed along its exterior surface and an asymmetrical cross-section with additional wall thickness in the non-connector cross section regions is provided by the present invention. Cooperating, substantially flat exterior bearing surfaces may also be formed along the exterior surface of the tubing. The tubing can be wound into coiled alignment with the male and female connectors securing adjacent coils together, and the additional wall thickness regions in the asymmetrical cross-sectional reducing unwanted twisting of the tubing that would otherwise lead to individual coils rising from their original, substantially planar coiled alignment. An extrusion manufacturing process with special inner and outer dies is also provided.
Owner:BAUMAN TODD J
Vehicle for a magnetic levitation track
ActiveCN104039587AReduce centrifugal forceSimple structureSliding/levitation railway systemsUnderframesLevitationMagnetic levitation
The present invention relates to a vehicle for a magnetic levitation track having a coach body (1) and a propulsion and supporting device (4) as well as at least one levitation frame (2) fastened on the coach body (1) and the propulsion and supporting device (4). The levitation frame (2) can be deflected transversely to the longitudinal axis of the propulsion and supporting device (4) and a spring suspension system (12, 14, 20, 21) is arranged between the levitation frame (2) and propulsion and supporting device (4). The levitation frame (2) has a traverse (13) and a carrier (17) which are connected to each other in an articulated fashion.
Owner:MAX BOGL BAUUNTERNEHMUNG
Handheld portable measuring tool based on laser tracker and measuring method thereof
The invention discloses a handheld portable measuring tool based on a laser tracker and a measuring method of the handheld portable measuring tool. The measuring tool is a measuring pen which is composed of a conical pen head and a pen rod provided with a target ball base positioning hole. After a target ball base is installed on the pen rod, the pen point of the pen head aligns to and makes contact with a measuring point, a target ball is held by hand to be led to the target ball base, the measuring pen rod is slowly rotated and is kept stable at four positions, the laser tracker measures the coordinate values at the four positions of the target ball, and then the position coordinates of the measuring point of the pen head can be calculated. The handheld portable measuring tool based on the laser tracker and the measuring method of the handheld portable measuring tool have the advantages that no target ball base positioning holes need to be machined in the measuring point, and only the condition that the micro plane where the measuring point is located enables the pen point to be kept stable and aligning when the measuring pen rotates needs to be ensured; the measuring pen does not need to be demarcated, and measuring pen manufacturing errors and form and location tolerances have no influence on the accuracy of a measuring result; the structure is simple, using is convenient, the algorithm can be programmed into the control program of the laser tracker, and the application range is wide.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
Variable pitch split type numeric control alignment system of paper laminating machine
ActiveCN103818744ASimple structureGuaranteed uptimeRegistering devicesArticle feedersElectrical and Electronics engineering
The invention discloses a variable pitch split type numeric control alignment system of a paper laminating machine. The variable pitch split type numeric control alignment system of the paper laminating machine comprises a first alignment device group and a second alignment device group, wherein the first alignment device group comprises at least two slide rails mounted right above a first conveying mechanism, a plurality of first alignment devices moveably mounted on the slide rails and in symmetric distribution and synchronous working, and a driving mechanism used for driving the first alignment devices to move on the slide rails; each of the first alignment devices comprises a first transmission chain, a first power device used for driving the first transmission chain to rotate, and at least one group of alignment gauges mounted on the first transmission chain and used for aligning and transmitting the laminated bottom paper; when the size of the laminated bottom paper transmitted on the first conveying mechanism in the length direction gets shorter or longer, the driving mechanism device drives the first alignment devices to be mounted on the slide rails and move to the alignment point of the laminated bottom paper, so that the first alignment device group can perform the spatial position alignment and transmission on the laminated bottom paper of different sizes.
Owner:东莞市顶艺机械有限公司
Breathing recovery device used for department of critical care medicine
InactiveCN111658485AReduce total usageEasy to press operationRespiratorsElectrotherapyPhysical medicine and rehabilitationMedical equipment
The invention relates to the technical field of medical equipment, in particular to a breathing recovery device used for a department of critical care medicine. The breathing recovery device comprisesa breathing mask; the outer side of the breathing mask fixedly communicates with a connecting mechanism, and the connecting mechanism includes a hose; one end of the hose fixedly communicates with aninner sleeve, and the other end of the inner sleeve is sleeved with an outer sleeve; a thread barrel is welded to the other side of the outer sleeve in a communicating manner; and the outer side of the thread barrel is sleeved with a first thread bushing. According to the breathing recovery device, a round rod is arranged to drive a round table to do reciprocating motion up and down, thus being beneficial to carrying out chest compression operation on a patient; meanwhile, a valve plate is fixedly connected with the middle position of the round rod, and thus, when moving vertically, the roundrod drives the valve plate to perform reciprocating compression in a barrel body, thereby effectively conveying air into the breathing mask through the connecting mechanism to supply oxygen to the patient, thus facilitating that the oxygen supply operation and the compression operation are carried out synchronously and coherently, and the utilization number of medical workers in breathing recovery emergency can be reduced conveniently.
Owner:杨剑秋
Special-shaped rib surrounding bone fracture plate and use method thereof
The invention relates to a special-shaped rib surrounding bone fracture plate. The bone fracture plate is characterized by being provided with a main trunk, wherein 2-6 pairs of symmetric surrounding arms are arranged on the main trunk; the main trunk is arc-shaped; the 2-6 pairs of surrounding arms are uniformly arranged at the two ends of the main trunk; one end of the main trunk is provided with large-diameter surrounding arms, and the other end of the main trunk is provided with small-diameter surrounding arms; the diameter of the large-diameter surrounding arms is greater than that of the small-diameter surrounding arms; the entire bone fracture plate is conical. During use, a proper product can be selected according to the fracture shape of a rib, one larger-diameter segment is used for fixing one thicker segment of the rib, the other end is used for fixing one thinner segment of the rib, and two or four pairs of surrounding arms can effectively fix. For short-distance rib bone fracture, two or four pairs of the special-shaped rib surrounding bone fracture plates are adopted; for longer-distance rib bone fracture, six pairs of the special-shaped rib surrounding bone fracture plates are adopted. By adopting the (conical) special-shaped rib surrounding bone fracture plate, the rib fracture can be well fixed. Since dynamic surrounding and pressurized fixing are adopted, so that bone growth is facilitated, and the rehabilitation period is shortened. A good fixing effect is achieved, and the problem of difficulty in operation is solved.
Owner:SHANGHAI XINCHANG MEMORY ALLOY TECH
Actuator assembly for electronic parking brake
InactiveCN107848518AStable alignmentIncreased durabilityBraking element arrangementsBraking action transmissionEngineeringActuator
Owner:KEYANG ELECTRIC MACHINERY
Backlight module
ActiveCN102661550BStable alignmentImprove stabilityPoint-like light sourcePlanar/plate-like light guidesLight guideEngineering
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Material shunting device for plastic dies
The invention discloses a material distribution device for plastic molds, which comprises a device body, a feed port, a feed chamber, a first feed chamber, a second feed chamber, a third feed chamber, a limit device, an inductor and Supporting legs, one side of the device body is provided with the feed inlet, the feed chamber is fixedly connected below the feed inlet, the first feed chamber is provided inside the feed chamber, the A small stirring device is provided inside the first feed chamber, the inductor is provided above the inside of the first feed chamber, the second feed chamber is provided on one side of the first feed chamber, and the second feed chamber is provided on the side of the first feed chamber. The other side of a feed chamber is provided with the third feed chamber, the limit device is provided above the feed chamber, the second discharge pipe is connected below the feed chamber, and the second flow divider One side of the pipeline is fixedly connected with the first diversion pipeline, and the micro-stirring device installed inside the feeding chamber can stir the materials to prevent the materials from solidifying and make them evenly distributed.
Owner:吴肖颜
Apparatus for testing semiconductor devices
InactiveCN107797044AImprove test reliabilityAvoid pinchingElectrical measurement instrument detailsIndividual semiconductor device testingPower semiconductor deviceInterposer
A test apparatus for testing semiconductor devices include an insert including an accommodating part receiving a semiconductor device and an opening part formed on the bottom surface of the accommodating part; a test socket provided with a plurality of connection terminals electrically connecting the semiconductor device to a tester; and an interposer disposed between the insert and the test socket and electrically connecting the semiconductor device to the test socket. Especially, the interposer comprises a first circuit board disposed on the test socket, and a second circuit board coupled tothe upper surface of the first circuit board, wherein the first circuit board comprises a plurality of via contacts connected between connection terminals and contact terminals of the semiconductor device so as to connect the contact terminals to the connection terminals, and the second circuit board comprises a plurality of guide holes into which the contact terminals are inserted. Accordingly,the apparatus can protect the contact terminals from being clamped, can accurately align with a semiconductor device having a small interval, and can stably connect the contact terminals to the connection terminals.
Owner:ISC CO LTD
Assembled anatomical proximal femoral fracture intramedullary fixing device
The embodiment of the invention relates to an assembled anatomical proximal femoral fracture intramedullary fixing device which comprises a proximal intramedullary nail, a proximal locking nail and adistal locking nail; the proximal intramedullary nail is of a rod-shaped structure and comprises a first fixing part, a transition part and a second fixing part; the proximal locking nail comprises atool bit, a connecting part and a sleeve; the shape of the proximal locking nail is matched with that of a second locking nail hole. The design of the appearances and the abduction angles of the firstfixing part and the transition part of the proximal femur intramedullary nail provided by the embodiment of the invention has extremely high matching degree with a proximal femur medullary cavity, different diameters and lengths can be selected, the intramedullary nail proximal part design avoids protruding out of the vertex of the greater trochanter, the distal forked structure design reduces the risk of stress fracture, and the proximal locking nail is provided with spiral blades with different lengths and central locking structures with different lengths, so that better restoration and more effective fixation between fracture ends are realized.
Owner:TIANJIN WALKMAN BIOMATERIAL CO LTD
Auxiliary assembly device based on installation of small injection mold
InactiveCN112297349AAssembly precisionAdapt to installation needsMetal working apparatusEngineeringMechanical engineering
The invention discloses an auxiliary assembly device based on installation of a small injection mold and relates to the technical field of auxiliary assembly devices. The problem that a punching needle plate is easy to damage due to low precision because most of existing punching needles are manually operated during assembly is solved. The auxiliary assembly device based on installation of the small injection mold comprises a kinetic energy block. The kinetic energy block is connected to a rod body at the top of a hammering rod in an inserted manner. The device is high in automation degree, the hammering rod can be controlled to hammer the punching needles only by pressing a pressing rod in a reciprocating manner, under the positioning effect of a positioning plate and a positioning hammer, the punching needles are hammered accurately, the punching needles can be assembled on a punching needle plate accurately, the positioning plate and the positioning hammer have various matching combinations, the device can meet the installation requirements of different punching needles, the adaptability is high, and the practicability and the adaptability of the device are improved.
Owner:何冰冰
Magnetic wireless charging panel
PendingCN114825655AFunction increaseWorks with wireless chargingEngagement/disengagement of coupling partsBatteries circuit arrangementsMobile phoneInductive charging
A magnetic attraction wireless charging panel provided by the present invention comprises a panel main body, a jack module, a wireless charging module, a voltage transformation module and a magnet block, the jack module is installed on one side of the panel main body, and the wireless charging module is fixed on one side, away from the jack module, of the outer wall of the panel main body. The voltage transformation module is fixed to the middle of the inner wall of the panel body and electrically connected with the wireless charging module, and the multiple magnet blocks are fixed to the side, close to the wireless charging module, of the inner wall of the panel body at equal intervals. The wireless charging module is mounted on the charging panel, so that the function of the charging panel can be increased, people can wirelessly charge a mobile phone through the charging panel on the wall surface, and the mobile phone can be firmly and stably adsorbed on the wireless charging panel for charging through the arranged magnet block; and the mobile phone can be aligned with the wireless charging module, so that the charging efficiency is ensured.
Owner:四川川流汇通贸易有限公司
A driving training teaching method and system based on first-person gaze position adjustment
ActiveCN112270864BStable alignmentAccurate comparisonCosmonautic condition simulationsSimulatorsPhysical medicine and rehabilitationSimulation
The invention discloses a driving training teaching method and system based on the adjustment of the first-person sight position. The method includes: obtaining the reference sight position and the positional relationship between the benchmark calibration car and the preset mark under the sight position of the driving student; Calculate the deviation vector from the positional relationship between the benchmark calibration car and the preset marker under the first-person sight; load the virtual driving training lesson plan constructed under the first-person sight based on the benchmark sight position; adjust the benchmark sight position in the virtual driving training lesson plan to driving The position of the student's line of sight, and build a deviation correction vehicle in the virtual driving training lesson plan, and get the virtual driving training lesson plan for the driving student for driving training teaching. The invention builds a deviation checking car in the virtual driving training teaching plan, which facilitates the driving students to obtain the gap between the scene they see and the language prompts of the teaching plan, improves the learning efficiency of the driving students, improves the discomfort of the students' sitting posture, and solves the problem of unfamiliar car operation after the driving test. .
Owner:CETHIK GRP
Liquid crystal composition containing benzothiophene polymerizable compound, and applications thereof
InactiveCN110922981AQuick responseStable alignmentLiquid crystal compositionsOrganic chemistryCrystallographyLiquid-crystal display
The invention relates to the field of liquid crystal materials, specifically to a liquid crystal composition containing a benzothiophene polymerizable compound, and applications thereof. The liquid crystal composition comprises one or a plurality of polymerizable compounds represented by a general formula I, and further comprises a liquid crystal basic system, wherein the using amount of the polymerizable compound represented by the general formula I accounts for 0.1-5% of the total mass of the liquid crystal basic system. According to the invention, the liquid crystal composition has the advantages that the reaction speed is high, the polymerization time of the polymerizable compound can be shortened, the time required by the polymerization process of the liquid crystal display device isgreatly shortened, the yield of the liquid crystal display device is improved, the exposure time of the liquid crystal display device in the environment is shortened, and the quality performance of the liquid crystal display device is improved, so that the liquid crystal composition provided by the invention is suitable for PSVA and SAVA display mode liquid crystal display devices, and is especially suitable for PSVA liquid crystal display devices.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH
A cup feeding mechanism of a cup printing machine
A cup feeding mechanism of a cup printing machine, comprising a frame, a pallet, a turbine, a worm, four fixed shafts, four swing arms, four screw rods, and a drive mechanism capable of driving two adjacent screw rods to rotate in opposite directions; through the four screw rods The screw grooves on the cups are synchronously transported to four points on the opening edge of the cup, and the cup can be more stably and accurately socketed on the cup mold, making the alignment between the cup and the printing device more accurate; The linear guide groove and the arc-shaped guide groove can position the movement track of the roller shaft. Through the adjustment of the worm, the turbine can push the swing arm to swing inside and outside through the roller shaft, thereby adjusting the diameter of the circle surrounded by the four screws. It is suitable for different Specification cup; Since the screw is installed at the end of the long arm of the swing arm, the distance between the screw and the fixed shaft is fixed, and part of the transmission connection on the long arm follows the movement of the long arm. When adjusting the diameter of the circle surrounded by the four screws , without changing any structure of the drive mechanism.
Owner:广东金兴机械股份有限公司
A file punching and binding device with protective mechanism based on economical management
ActiveCN112744000BFacilitate automatic collectionEasy to dryDrying gas arrangementsFire rescueSolenoid valveStructural engineering
Owner:东营职业学院
Auxiliary device and method for stainless steel pipe welding
InactiveCN111761169ASimple structureGuaranteed purityShielding gas supply/evacuation devicesShielding gasEngineering
The invention discloses an auxiliary device and method for stainless steel pipe welding. The device comprises a hose clamp. The hose clamp comprises a stainless steel clamp band. One end of the clampband is fixedly connected with a clamp hoop shell and a clamp band shell which are integrated. The free end of the clamp band is inserted into the clamp band shell to form a closed ring. A bolt is screwed into the clamp hoop shell to lock the clamp band. The clamp band is provided with at least two auxiliary welding holes. The surface of the clamp band and the walls of the auxiliary welding holesare provided with high-temperature-resistant layers. The auxiliary device for stainless steel pipe welding has the characteristics of being simple in structure, capable of assisting a connecting partof a stainless steel pipe in accurate locating and also capable of stably charging shielding gas to the back side of a weld seam.
Owner:CHENGXI SHIPYARD
Protection and detection auxiliary device of universal material testing machine
PendingCN113588400ASimple and efficient operationExperiment operation is simpleTelevision system detailsMaterial strength using tensile/compressive forcesEngineeringTest material
The invention discloses a protection and detection auxiliary device of a universal material testing machine. The protection and detection auxiliary device comprises a safety protective cover, a stable anti-shake frame, a connecting mechanism, a camera stabilizing frame and a camera; the safety protective cover covers the universal material testing machine, and an opening is formed in the side surface; the stable anti-shake frame is mounted on a movable plate of the universal material testing machine and can stretch up and down; the connecting mechanism is installed on the stable anti-shake frame, can stretch out and draw back front and back, and moves up and down along with the stable anti-shake frame; the camera stabilizing frame comprises a fixing rod and a camera telescopic rod; one end of the fixing rod is fixed with the connecting mechanism and can move back and forth and up and down along with the connecting mechanism; one end of the camera telescopic rod is mounted on the fixing rod, and the camera telescopic rod can move on the fixing rod and rotate around the fixing rod; the camera is fixed at the other end of the camera telescopic rod and moves along with the camera telescopic rod; and the camera shoots a test material. The device has the advantages of scientific and reasonable structure, safety, stability, simplicity and convenience in operation, accuracy, stability and the like.
Owner:YANGZHOU UNIV
Driving training teaching method and system based on first-person sight line position adjustment
ActiveCN112270864AStable alignmentAccurate comparisonCosmonautic condition simulationsSimulatorsSimulationIndustrial engineering
The invention discloses a driving training teaching method and system based on first-person sight line position adjustment. The method comprises the steps: acquiring the position relation between a benchmark proofreading vehicle and a preset mark under the benchmark sight line position and the sight line position of a driving student; calculating a deviation vector according to the position relationship between the reference proofreading vehicle and the preset mark under the first-person sight of the two; loading a virtual driving training teaching plan constructed under a first-person sight line based on the reference sight line position; and adjusting the reference sight line position in the virtual driving training teaching plan to the sight line position of the driving student, and constructing a deviation correction vehicle in the virtual driving training teaching plan to obtain the virtual driving training teaching plan for the driving student for driving training teaching. According to the invention, the deviation proofreading vehicle is constructed in the virtual driving training teaching plan, so that the driving trainee can obtain the difference between the seen scene andthe teaching plan language prompt conveniently, the learning efficiency of the driving trainee is improved, the sitting posture discomfort of the trainee is improved, and the problem of actual strange driving operation after the driving test is finished is solved.
Owner:CETHIK GRP
Sheet conveying device and image forming apparatus including the sheet conveying device
ActiveCN106006150BAvoid misalignmentStable alignmentRegistering devicesElectrographic process apparatusEngineeringSheet material
The sheet conveyance device of the present invention includes a first tray, a conveyance unit, a second tray, and a conveyance control unit. The conveying section has a first conveying path, a second conveying path, a third conveying path, a fourth conveying path, a pair of discharge rollers, and a pair of reversing rollers, the first conveying path is extended from the first tray to a reference position; The second conveying path is extended from the reference position to the second tray; the third conveying path is branched from the second conveying path and communicated with the discharge space above the second tray; the fourth conveying path is branched from the third conveying path , communicating with the first conveying path; the pair of discharge rollers is arranged on the second conveying path; the pair of reversing rollers is arranged on the third conveying path. After the second surface of the first sheet faces the reference position and passes through the reference position, the conveyance control unit makes the rear end side of the first sheet fed into the second conveyance path be pinched between the pair of discharge rollers. The rotation of the pair of discharge rollers is stopped, and after the first face of the second sheet following the first sheet passes the reference position against the reference position, the pair of reverse rollers is reversed in a state where the rotation of the pair of discharge rollers is stopped. Rotate so that one end of the second sheet protrudes from the third conveyance path to the discharge space.
Owner:KYOCERA DOCUMENT SOLUTIONS INC
Sheet conveying device and image forming apparatus having the same
ActiveCN106006150AAvoid misalignmentStable alignmentRegistering devicesElectrographic process apparatusMechanical engineering
Owner:KYOCERA DOCUMENT SOLUTIONS INC
Display panel, display panel manufacturing method, and display device
InactiveUS20210063823A1Low manufacturing costStable alignmentVacuum evaporation coatingSputtering coatingEngineeringDisplay device
The present invention provides a display panel, a manufacturing method, and display device thereof. By disposing a mesoporous guide film on a surface of an alignment layer and using evenly distributed mesopores in the mesoporous guide film with a same tilt angle, the liquid crystal molecules are tilted along the mesopores under applied voltage and stand in pore channels of the mesopores to mitigate the issue of poor reliability when the display device implements stable alignment, lower manufacturing cost, improve yield rate of products, and shorten time of processes.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Cup feeding mechanism of cup printing machine
The invention discloses a cup feeding mechanism of a cup printing machine. The cup feeding mechanism of the cup printing machine comprises a machine frame, a supporting plate, a turbine, a worm, fourfixed shafts, four swing arms, four screws and a driving mechanism capable of driving every two adjacent screws to rotate in the opposite direction. The four points on the edge of an opening of a cupare subjected to synchronous transmission though screw grooves of the four screws, and the cup can be more stably and accurately connected on a cup mold in a sleeving mode, so that the alignment of the cup with a printing device is more accurate; linear wire guiding grooves and curved guiding grooves which cross each other are arranged on the turbine and supporting plate to locate the movement track of a roller shaft, the turbine pushes the swing arms to swing inside and outside through the roller shaft through the adjustment of the worm, and the diameter of a circle enclosed by the four screws is adjusted and the circle is applicable to cups of different specifications; since the screws are installed at the tail ends of long arms of the swing arms, the distance between the screws and a fixed shaft is fixed and unchanged, part of the transmission connection on the long arms follows the movement of the long arms, and when the diameter of the circle enclosed by the four screws is adjusted, any structure of the driving mechanism does not need to be changed.
Owner:广东金兴机械股份有限公司
Dual quaternion mobile communication antenna control method and system based on mems inertial navigation
ActiveCN104064869BGuaranteed uptimeStable alignmentCosmonautic vehiclesCosmonautic partsControl flowGyroscope
Based on the MEMS inertial navigation dual quaternion antenna control method, the antenna control quaternion is introduced on the basis of the navigation attitude quaternion. In each interrupt cycle of the navigation computer, the rotation vector of the carrier body relative to the ideal platform coordinate system measured by the gyroscope is used to update the two quaternions. Kalman filter is used to correct the error of navigation attitude quaternion in each filter cycle. According to the relationship between the attitudes determined by the two attitude quaternions, the antenna control command angular velocity is determined. Finally, the antenna servo control angle converted from the attitude of the antenna control quaternion drives the rotation of the servo system. The dual quaternion antenna control system based on MEMS inertial navigation, using the control method as the control process, can realize precise control of the antenna pointing in motion. The invention can effectively avoid the impact of the quaternion instability of the navigation attitude in the Kalman filter transient process on the servo system of the antenna in motion, and effectively shorten the satellite-to-satellite time of the communication system in motion.
Owner:BEIJING AEROSPACE WANDA HIGH TECH CO LTD
Drawing frame of a staple fibre spinning machine comprising a central fibre guide
ActiveCN100445444CAvoids transverse forces for uneven rubbingEasy to solveDrafting machinesMechanical engineeringFibre spinning
The aim of the invention is to modify a drawing frame for a staple fibre spinning machine comprising a downstream compressor region, in such a way that the axes of the compression channel (14) and the supplied fibre strip (F) are aligned in an essentially parallel, preferably coaxial manner at the entrance of the compression channel (14).
Owner:HLDG FUR INDUSTRIBETEILIGUNGEN AG
Built-in tape tracking and deviation correction device in the middle sealing bag of bag making machine
ActiveCN104708853BIngenious and reasonable designSimple structureBag making operationsBox making operationsEngineeringEnvelope Tracking
Owner:NANJING HUJIANG COMPOSITE MATERIALS
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