193 results about "Dual axis" patented technology

The invention relates to the technical field of optical three-dimensional measurement and metering, and discloses a single-camera three-dimensional coordinate measurement method and system based on full-field distance measurement, and the method comprises the following steps: S1, building a calibration field containing a control point, shooting an image of the calibration field through a monocular camera, extracting the image coordinate of the control point, carrying out the camera calibration, and obtaining a calibration field; obtaining internal parameters and external orientation parameters of the camera; and S2, controlling the laser range finder to aim at the control point in the calibration field through the non-orthogonal double-axis turntable. Submillimeter-level high-precision measurement can still be realized under the condition of a short baseline, and the problems that the precision in the depth direction is insufficient, the baseline requirement is long, parameters are easy to drift and the like in traditional stereoscopic vision measurement are effectively solved. By introducing a non-orthogonal double-shaft turntable and a visual guidance laser aiming mechanism, autonomous, rapid and accurate measurement of multiple measurement points in a large field of view is realized, and the automation degree and reliability of measurement in a complex environment are remarkably improved.

The utility model discloses a double-shaft rotary table system with an encoder installation structure, which comprises an encoder, an encoder mandrel, an encoder base assembly and a locking nut, the inner end of the encoder mandrel is fixedly connected with a rotary mandrel of the double-shaft rotary table system, the encoder base assembly is fixedly connected with a base of the double-shaft rotary table system, and the locking nut is fixedly connected with the encoder mandrel. The outer end of the encoder mandrel extends out of the end of the double-shaft rotary table system and then is provided with the encoder, a rotary inner ring of the encoder is fixedly connected to the outer end of the encoder mandrel in a sleeved mode, and the shaft section, located between the encoder and the end of the double-shaft rotary table system, of the encoder mandrel is rotationally arranged on the encoder base assembly in a sleeved mode through a bearing. The end portion of the outer end of the encoder mandrel is connected with a locking nut, the inner end of the locking nut tightly presses a rotating inner ring of the encoder, and the encoder is fixedly connected to the encoder base assembly. According to the double-shaft rotary table system, installation of the encoder can be achieved, and installation can be achieved in an axial and circumferential double-fixing mode.

A phase difference sheet including a substrate and a phase difference film as a tilt film, wherein, in a biaxial refractive index ellipsoid exhibiting a refractive index anisotropy, of three principal refractive indexes nx, ny, nz, the principal refractive index in the length direction of a columnar structure, i.e., the X-axis direction, is nx, the principal refractive index in the major axis direction of an ellipse perpendicular to the X-axis, i.e., the Y-axis direction, is ny, and the principal refractive index in the minor axis direction, i.e., the Z-axis direction, is nz, the following conditional expression (1) is satisfied, and, in a case where the incident angle of a direction tilted to the X-axis side with the normal as a reference is positive, the phase difference of incident light at an incident angle of +30° is Re(+30), the phase difference of incident light at an incident angle of -30° is Re(-30), and the ratio of Re(+30) to Re(-30), i.e., the phase difference ratio, is Re(30) ratio, the following conditional expression (2) is satisfied, ny > nx > nz (1), Re(30) ratio = Re(30) / Re(-30) = 1.1 to 4.0 (2).

The application discloses a three-freedom-degree large-stroke fast-tool-servo device, which comprises a workbench, a voice coil motor, a Z-direction displacement transmission mechanism, a three-axis connecting mechanism, an X-direction driving platform, a Y-direction driving platform, a tool holder and a tool. The three-axis connecting mechanism comprises a three-axis connecting plate and a three-axis connecting frame, and the three-axis connecting plate is connected with the three-axis connecting frame through X-axis and Y-axis flexible hinges around the three-axis connecting plate. The flexible hinges are provided with Z-axis flexible hinge points. The double-axis flexible hinges are provided with at least one X-axis flexible hinge point and one Y-axis flexible hinge point. The Z-direction displacement transmission mechanism, the three-axis connecting mechanism and the driver connecting rod are designed in an integrated mode. The piezoelectric ceramic driver is adopted. The three-freedom-degree active cutting of the tool can be realized, the large-stroke output capacity is achieved, the machining process of a complex optical surface can be efficiently completed, the displacement errors in multiple directions can be compensated, and the cutting force disturbance problem is solved.

The present disclosure provides a kind of inertial motion measurement double-axis rotation excitation enhancement method and system based on observability analysis.First, the system state space model of introducing double-axis rotation mechanism is constructed, the normalized observability analytical expression of sensor error under zero speed condition is derived based on Gramian matrix eigenvalue decomposition;Accordingly, the attitude condition of error observability maximization is determined, and the optimal rotation excitation strategy including a series of optimal observation positions is set;In the process of inertial navigation positioning assisted by zero speed update ZUPT, in non-zero speed interval, based on the optimal rotation excitation strategy, the IMU is sequentially guided to each optimal observation position by controlling double-axis rotation mechanism, to solve the problem of low error state observability caused by single carrier attitude in zero speed correction.The present application can realize full state high-precision estimation of three-axis accelerometer bias and gyroscope zero bias, effectively improve the precision and robustness of autonomous motion measurement in complex environment.

The invention belongs to the technical field of marine rescue searchlighting, and discloses a marine rescue searchlighting system with biaxial orientation control and gyroscope stable light beam projection, which comprises a searchlight, a life jacket and a controller, the searchlight and the controller are arranged on a rescue boat; the searchlight is provided with an orientation control module, a gyroscope and an LED light source module. The life jacket is provided with a detector used for detecting a drowning state and a lifesaving positioner used for acquiring lifesaving coordinates and outputting a survival signal; the controller is provided with a communication element, a positioning element, a ship body position module and a control module, the communication element is used for receiving survival signals of the lifesaving positioner and conducting signal processing and transmission, the positioning element is used for obtaining the accurate position of the rescue ship, and the ship body position module is used for monitoring the posture and the motion state of the ship body in real time and controlling the ship body to move. And the control module drives the searchlight to work according to the acquired signals of the communication element, the positioning element and the ship body position module.

The invention aims to solve the technical problems that a hemispherical resonator gyroscope in the prior art is difficult to adapt to a high-dynamic environment, cannot realize full-circumferential high-precision measurement and is insufficient in anti-interference capability, and provides a three-axis inertially stabilized platform system based on a full-angle mode hemispherical resonator gyroscope and a control method thereof. The system adopts a three-axis two-frame structure, and the method adopts a Y-axis stable control loop and an XZ double-axis stable control loop to realize three-axis stable control of the inertially stabilized platform; a stable control loop adopts a double-loop control mode of'a rate inner loop + a position outer loop ', angle change information sensed by a corresponding hemispherical resonator gyroscope is calculated by a correction network to generate a driving signal, a corresponding torque motor is driven to generate an electromagnetic torque for counteracting an interference torque, and the method can isolate the disturbance caused by the movement of a carrier; a six-position calibration method of a mixed mode is invented based on the stable control loop, and the method is characterized in that the gyroscope is stabilized at the optimal standing wave angle position during stable acquisition, so that the optimal measurement precision of the gyroscope is exerted.

This utility model relates to the field of multimedia equipment technology, and in particular to a new media recording and broadcasting device. The new media recording and broadcasting device includes: a base, a display screen, a keyboard panel, a mounting bracket, a dual-axis motor, a fixing ring, a ventilation duct, a sleeve, and a sealing plate. The base has a hollow square structure with a handle on one side. The keyboard panel is connected to the top of the base and has air inlets. The display screen is rotatably connected to the keyboard panel. Two side openings are provided on each of the two side walls of the base. Fixing plates with first threaded holes are provided at the four corners of the inner wall of the base. The mounting bracket, located inside the base, includes: a top frame, a bevel, an opening slot, a port plate, and a connecting plate. This utility model, through the cooperation of the dual-axis motor, the ventilation duct, and the spiral blades, can effectively exhaust air from inside the new media recording and broadcasting device, ensuring the normal operation of electronic components.

A novel mechanical fish is characterized in that the novel mechanical fish comprises a head assembly, a middle assembly, a counterweight box assembly, a steering engine, an optical axis, an external counterweight cabin, a charging head, a first tail assembly, a second tail assembly and a third tail assembly; the third tail assembly is installed on the first tail assembly through the second tail assembly, a plurality of optical shafts are installed in the balance weight box, a balance weight box assembly is installed in the middle assembly, the steering engine is installed above the balance weight box assembly, the external balance weight cabin is installed at the bottom of the middle assembly, and the charging head is installed on the outer side of the middle assembly. The tails of the middle assembly, the first tail assembly and the second tail assembly are each provided with a double-shaft steering engine. According to the design, swimming movement of fishes such as sharks is simulated, and the fishtail is controlled to swing through the multiple steering engines, so that the fishtail has high flexibility and can steer flexibly. Therefore, on the basis that the bionic fish is small in size, a narrow and complex underwater environment can be explored.

The application discloses a kind of laser processing system and its control method, the system includes: host computer, for receiving laser processing process parameters, target comparison position point coordinates are generated in combination with processing chart file;Double-axis moving platform;Galvanometer module, including X galvanometer and Y galvanometer, X galvanometer includes X galvanometer motor and X encoder, Y galvanometer includes Y galvanometer motor and Y encoder;Motion control module, for controlling double-axis moving platform and galvanometer module movement;Encoder module, for acquiring the encoder feedback value of galvanometer module;FPGA module, for receiving target comparison position point coordinates and encoder feedback value, judge whether it meets processing condition, when determining that it meets processing condition, output pulse signal;Laser control unit, for outputting laser according to pulse signal.The application can enhance laser processing effect, realize high frequency, high response, high synchronous accuracy PSO pulse output, improve laser processing quality.

This invention discloses a load transmission testing device for composite beams, comprising a base, an L-shaped back plate, a hydraulic cylinder, a mounting plate, a pressure sensor, a loading component, a clamping and fixing mechanism, and a displacement mechanism. The clamping and fixing mechanism uses a dual-axis motor-driven screw to automatically clamp the composite beam; the displacement mechanism uses a servo motor-driven slider to achieve horizontal movement of the composite beam, allowing for rapid switching of the loading position without hoisting; the hydraulic cylinder pushes the loading component downwards, the pressure sensor monitors the load value in real time, and multiple laser rangefinders synchronously measure the vertical deformation of the beam at various positions in a non-contact manner, avoiding damage to traditional contact displacement gauges when the beam fails; the clamp adopts a plug-in structure, combined with an electromagnetic adsorption and pin-locking mechanism, facilitating quick assembly and disassembly, and is adaptable to composite beams with different cross-sectional shapes. This invention has advantages such as automatic clamping, hoist-free relocation, non-contact measurement, and quick clamp changing, enabling efficient, safe, and accurate completion of multi-condition load transmission testing.

1. The name of the design product: double-axis temperature chamber. 2. The use of the design product: used for calibration and temperature simulation of inertial components or IMU systems in the fields of aerospace, electronics, automobiles, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a high-speed servo laser blanking line control method and system; the invention relates to the field of dynamic control and compensation technology for laser cutting equipment; it collects core position status data of dual Y-axis, completes hard synchronization and timestamp alignment of multi-channel data; it receives full closed-loop position feedback data P1 from dual Y-axis grating rulers, position data P2 from dual Y-axis servo motor encoders, and theoretical positions P3 of dual Y-axis issued by the motion controller. The servo drive unit includes servo motors and matching servo drivers respectively connected to the No. 1 Y-axis motion mechanism and the No. 2 Y-axis motion mechanism; this invention adopts a dual-branch parallel design of "SMO sliding mode observer + FFRLS recursive least squares with forgetting factor". The SMO branch is specifically adapted for rapid observation of abrupt nonlinear disturbances, realizing finite-time convergence identification of step loss; the FFRLS branch is specifically adapted for accurate identification of slow time-varying continuous parameter drift, quantifying the expected step loss caused by parameter changes.

The application discloses a MEMS accelerometer centrifugal test structure, system and method, the structure comprises a centrifugal transfer tool, a centrifugal test tool turntable, a test transfer tool, a chip test board and a plurality of clamp mechanisms; the system comprises a centrifugal machine turntable and eight MEMS accelerometer centrifugal test structures; the method is suitable for the MEMS accelerometer centrifugal test system, realizes test and full-scale calibration of the accelerometer chip, obtains indexes of zero offset and nonlinearity, and evaluates cross-axis crosstalk of the accelerometer chip; through the test tool turntable, forward and reverse tests of the accelerometer full scale are realized without disassembly; the cross-shaped test board is provided with X and Y direction clamps, X, Y and X-Y dual-axis accelerometers can be tested and cross-axis crosstalk can be evaluated, and the system has strong versatility; the clamp is integrated on the circuit board, cable damage is prevented, and safety is higher; the structure is integrated and adapted to batch production, the clamp is easy to install and compatible with multiple can sizes, and test efficiency is further improved.

This invention belongs to the field of inertial measurement technology, specifically an inertial measurement unit and its linear-angular coupling motion calibration method. It includes constructing a non-contact inertial measurement unit linear-angular motion synchronous measurement system. Through a reference cubic prism, a three-dimensional laser vibrometer, a first dual-axis autocollimator, a second dual-axis autocollimator, and a data acquisition module, an attitude transformation matrix is ​​established from the cubic mirror coordinate system to the inertial measurement unit coordinate system. By synchronously triggering the inertial measurement unit, based on the outputs of a three-axis gyroscope and a three-axis accelerometer, the three-axis acceleration measured by the three-dimensional laser vibrometer in the inertial measurement unit coordinate system, and the three-axis angular velocity of the inertial measurement unit measured by the dual-axis autocollimator, the linear-angular coupling motion of the inertial measurement unit is calibrated. This invention avoids the influence of vibration on the accuracy of the measurement system and solves the problem of difficulty in dynamically tracking and monitoring the actual motion of the inertial measurement unit during vibration.

The utility model provides a kind of double-shaft 360 degrees self-control prism, including pedestal, mounting shaft, prism frame, prism head, compass, the upper side of the pedestal is provided with T type horizontal bubble, the inside of the pedestal is provided with first motor, the output end of the first motor is connected with pinion after passing through the upper side of the pedestal, the lower end of the mounting shaft is rotatably connected to the pedestal by bearing, the outer circumferential surface of the mounting shaft is sleeved with large gear, the large gear is meshingly connected to the pinion, the center of the lower side of the pedestal is vertically provided with connecting hole, the laser ranging module is arranged in the mounting shaft, the laser ranging module is relative to the connecting hole, the prism frame is connected to the upper end of the mounting shaft, the prism head is connected to the prism frame, the compass is connected to the prism frame and located below the prism head.The design is convenient to measure, can be automatically adjusted, structure is stable, and the adjustment precision is higher.

The invention discloses a double-axis control method and system for cone beam computed tomography equipment, and relates to the technical field of equipment control, and the method comprises the following steps: obtaining guide rail contact state data of a rotating arm at different heights and angles, and constructing a guide rail load distribution topology; identifying the offset state of the load action line based on the guide rail load distribution topology, and performing time sequence expansion on the guide rail load distribution topology based on the offset state to obtain a guide rail stress unbalance set; performing coupling reconstruction on the target motion paths of the rotating shaft and the lifting shaft based on the guide rail stress unbalance set to obtain a double-shaft cooperative motion track; coordinately adjusting the movement speed change process of the rotating shaft and the lifting shaft to obtain a load balance state; the double-shaft driving control instruction is generated based on the load balance state, the rotating arm is controlled to complete the posture adjusting process, and the problem that in the double-shaft cooperative movement process, due to the dynamic change of load distribution of the rotating arm, the stress of a guide rail contact interface is unbalanced is solved.

The utility model belongs to the technical field of operating levers, and discloses a double-shaft electric control operating lever which comprises a supporting assembly, a control lever, two magnetic code discs, a first Hall sensor, a second Hall sensor and a reset assembly. The control rod is rotationally connected to the supporting assembly, the central shaft of one magnetic code disc extends in the first direction, the central shaft of the other magnetic code disc extends in the second direction, the two magnetic code discs can rotate around the respective central shafts, and the control rod can drive the two magnetic code discs to rotate. The first Hall sensor and the second Hall sensor are installed on the supporting assembly, and each of the first Hall sensor and the second Hall sensor corresponds to one magnetic coded disc. The control rod rotates to drive the magnetic code discs to rotate, the first Hall sensor and the second Hall sensor can detect the rotating angles of the corresponding magnetic code discs, and then the rotating angles of the control rod in the first direction and the second direction are obtained. The reset assembly can drive the control rod to return to the middle position.

A heliostat includes a reflecting surface: an elastically deformable frame on which the reflecting surface is mounted: a truss structure behind the elastically deformable frame that includes at least four bracing struts with first ends attached to the elastically deformable frame and second ends attached to at least one node located centrally behind the frame: at least one actuator connected to at least one of the at least four struts at the at least one node: an electronic control system configured to communicate with the least one actuator; and a dual-axis mount to support and orient the above assembly. The actuation of the at least one actuator in response to the electronic control system causes compression or tension of at least one of the at least four bracing struts to thereby control a shape of the reflecting surface and the elastically deformable frame in at least low order bending modes.

The invention discloses a directional coordinate transformation method of a satellite-borne dual-offset reflector antenna, and belongs to the field of space measurement. The method comprises the following steps: firstly, calculating an installation parameter matrix representing a transformation relation between an antenna installation reference coordinate system and a satellite reference coordinate system; secondly, measuring the offset angle of the antenna in the zero attitude of the antenna, and constructing an electrical geometric parameter matrix representing the inherent structure transformation of the antenna; then, acquiring an antenna electric axis expected pointing coordinate represented by an azimuth angle and a pitch angle under a satellite coordinate system; and finally, solving a main surface axis rotation angle and an auxiliary surface axis rotation angle used for driving the antenna pointing mechanism through coordinate transformation based on the two angles. According to the invention, the problem of directional coordinate transformation caused by non-orthogonal parallelism of a dual-offset antenna rotation axis and a satellite coordinate axis is solved, high-precision in-orbit pointing of the antenna is ensured, the antenna passes darkroom test verification, and the antenna system can be expanded and applied to other antenna systems containing dual-axis rotation mechanisms.

An acceleration-measuring sensor assembly includes an accelerometer subassembly with three measurement axes, mounted in a housing equipped with securing elements, and configured to determine an acceleration along a principal axis A, the assembly comprising: a single-axis principal accelerometer with a seismic mass moving in a straight line along a principal axis A, measuring acceleration along the principal axis A which is misaligned with respect to a reference axis Y by at most 50 mrad, a secondary accelerometer having at least two measurement axes and measuring respectively along two axes X and Z which with the reference axis Y form a direct orthonormal trihedron (O, X, Y, Z), the measurement precision of the two-axis accelerometer along each of its axes being at least ten times inferior to the measurement precision of the single-axis accelerometer, and an electronic processing unit configured to calculate a compensated acceleration S.

This utility model provides a laser cutting positioning fixture for tempered glass substrate, belonging to the field of tempered film processing. It includes a base, several first clamping plates, and a second clamping plate. Several legs are fixed to one side of the base. A base plate and a sieve plate are respectively provided at both ends of the base, and the base plate and the sieve plate are connected between the legs. A first cylinder is mounted on the base plate. A support plate is rotatably connected to the base, and a slider is slidably connected to one side of the support plate. The output end of the first cylinder is rotatably connected to the slider. A bracket and a second cylinder are connected to the base, and a laser cutting machine is connected to the bracket. The first clamping plates are symmetrically arranged on both sides of the base. One side of the first clamping plate is connected to the output end of the second cylinder. A dual-axis motor is mounted on the side of the first clamping plate away from the second cylinder. Lead screws are fixedly connected to the output shafts on both sides of the dual-axis motor, and one end of the second clamping plate is connected to the lead screws.

The application discloses a temperature drift compensation method for a micro crystal oscillator chip, and particularly relates to the field of temperature drift compensation performed by electromagnetic interference signal measurement, and comprises the following steps: arranging a dual-axis Hall sensor array around a temperature sampling channel of the micro crystal oscillator chip, collecting spatial distribution of low-frequency electromagnetic fields in the chip operating environment, and generating an electromagnetic disturbance signal for representing parasitic electromagnetic interference behavior; performing hetero-frequency convolution processing on the electromagnetic disturbance signal and a thermal response signal obtained in the temperature sampling channel, extracting a coupling response feature related to the electromagnetic interference behavior, and constructing a spectrum fitting template of the electromagnetic parasitic injection behavior. By synchronously introducing a low-frequency electromagnetic disturbance perception channel outside the temperature sampling path, an interference identification, stripping and compensation dynamic linkage mechanism is constructed to realize active detection and correction of the latent electromagnetic interference component in the temperature response signal, thereby solving the problems of frequency compensation misadjustment and long-term offset accumulation in the prior art.

This utility model relates to a rotary support structure for a dual-axis tracking solar collector, comprising a telescopic rod, a base, a support beam fixedly connected to the base, and a support seat fixedly connected to the crossbeam of the solar collector frame. The fixed part of the telescopic rod is hinged to the support beam via a first horizontal axis, and the extended end of the telescopic rod is hinged to a connecting seat via a second horizontal axis. The connecting seat is fixedly connected to the crossbeam. The support seat is rotatably connected to the base via a rotating shaft. It also includes a balance spring with one end connected to the crossbeam and the other end connected to the support beam. The connection point between the balance spring and the crossbeam is located between the connecting seat and the support seat, and the connection point between the balance spring and the support beam is located between the base and the first horizontal axis. The base, support seat, and telescopic rod of this utility model form a modular design, facilitating assembly. The balance spring and telescopic rod not only enable the rotation of the crossbeam but also reduce the driving load and improve the stability of the system.

This invention belongs to the field of strain measurement technology and discloses an automatic calibration device and method for single-axis and dual-axis extensometers. The device includes a cross-shaped guide rail mounted on a base plate. The two straight tracks of the cross-shaped guide rail are divided into a first section and a second section by their perpendicular intersection. The first section is equipped with a closed-loop stepper motor, a motor connecting shaft, a moving slider, and a moving extensometer connecting shaft. The second section is equipped with a fixed slider, a locking bolt, and the extensometer connecting shaft. The fixed extensometer connecting shaft cooperates with the moving extensometer connecting shaft to fix the extensometer. The closed-loop stepper motor is connected to a host computer for signal transmission. When working synchronously, it can calibrate dual-axis extensometers; when working independently, it can calibrate single-axis extensometers. The two closed-loop stepper motors can work together in both phases and opposite phases, and can also calibrate dual-axis extensometers in proportional or non-proportional conditions. Therefore, this invention has the characteristics of high accuracy, strong adaptability, simple operation, and flexible application.

The utility model discloses a kind of glass cutting platform of double-shaft movement, including rack, the left and right two walls of the rack are rotationally connected with longitudinal uniform distribution's material conveying roller by bearing one, the upper end of rack is equipped with the laser cutting head of double-shaft movement, further including fixing mechanism;Fixing mechanism: it includes electro-hydraulic push rod, lifting seat, pipe support, connecting pipe, rubber suction cup, conduction component, reset component and pneumatic component, the bottom wall middle part of rack is set by the telescopic end of electro-hydraulic push rod to lifting seat, the upper side of lifting seat is equipped with pipe support by support, the inner wall of pipe support is equipped with evenly distributed connecting pipe, this glass cutting platform of double-shaft movement, in glass cutting process, by elastic element and extrusion element, the suction cup of contact with glass can be automatically conducted and operated, the suction cup not contacted with glass is automatically closed and operated, improve the cutting adsorption fixing effect of suction cup in device to glass.

This invention discloses a magnetic sensor that integrates full-bridge and dual-axis configurations on a single chip. The magnetic sensor comprises two antiferromagnetic tunnel junction full-bridge structures formed on the same chip with mutually perpendicular magnetic sensing directions. Each arm of the full-bridge structure has an antiferromagnetic tunnel junction unit, comprising, from bottom to top, a heavy metal layer, an antiferromagnetic reference layer, a tunneling barrier layer, an antiferromagnetic free layer, and a ferromagnetic layer. During the initialization phase of the antiferromagnetic tunnel junction unit, the Néel vector direction of the antiferromagnetic reference layer is set by applying an in-plane write current to the heavy metal layer. The Néel vector directions of the antiferromagnetic reference layers in the antiferromagnetic tunnel junction units corresponding to the two pairs of diagonal arms are opposite, and the in-plane write current directions corresponding to the two full-bridge structures are orthogonal. This invention integrates the reverse-direction configuration and the dual-axis orthogonal-direction configuration of the antiferromagnetic tunnel junction full-bridge on the same chip through current initialization.