315 results about "Dual axis" patented technology

The invention discloses a method and a device for measuring orthogonality of an orthogonal rotary shaft system, and belongs to the technical field of orthogonal rotary shaft system detection. The orthogonal rotary shaft system comprises a first rotary shaft system and a second rotary shaft system; the method comprises the following steps: carrying out axis inclination angle rotation error measurement and attitude fine adjustment by using a CCD (Charge Coupled Device) double-axis autocollimator, and a cubic reference prism and a double-sided optical flat which are respectively fixed with a first rotation shaft system and a second rotation shaft system; setting a reference cross line XY through the double-sided optical flat by using a second rotary shaft system; the cross curve of the reflected light beam of the cubic reference prism is overlapped with the reference cross curve XY by adjusting the mounting positions of the two rotary shaft systems; and rotating the first rotating shaft system, recording an angular deviation value and calculating an orthogonality value of the two rotating shaft systems. According to the invention, the reference drift error of mutual aiming of the two autocollimators is eliminated, the interference of the rotation error of the shaft system on orthogonality measurement is eliminated, and the precision and reliability of the orthogonality measurement of the shaft system are improved on the whole.

The invention relates to the technical field of pipeline welding, and discloses a thick-wall pipeline all-position laser automatic welding device and a matched welding method.The thick-wall pipeline all-position laser automatic welding device comprises a supporting base which is of a device foundation supporting structure, a first lifting table and a second lifting table are installed on the upper end face of the supporting base, and a closed-loop alloy steel rail is installed at the upper end of the first lifting table; and the closed-loop alloy steel track is a welding walking path of the laser welding equipment. According to the full-position automatic laser welding device for the thick-wall pipeline and the matched welding method of the full-position automatic laser welding device, precise adaptation is achieved through cooperation of a laser vision sensor and a multi-dimensional adjusting mechanism, the laser vision sensor collects weld joint contour data in real time, and when deviation is detected, a control system drives a longitudinal telescopic table and a double-shaft angle adjusting frame; the laser welding device is subjected to three-axis position adjustment and double-axis angle compensation, when the ovality of the pipeline causes deviation of a welding seam, the first longitudinal telescopic table can move in the direction perpendicular to the axis of the pipeline, and the double-axis angle adjusting frame synchronously adjusts the angle of a welding head.

Various optical systems for use in a light pulse atomic interferometer (LPAI)-based one-, two-, or three-axis accelerometer or gyroscope are disclosed. As an LPAI accelerometer or gyroscope may employ many different laser beams to implement the LPAI functionality, ways of combining these different laser beams to thereby simplify the optical systems are desired. The cooling laser beam portion of the optical system may be simplified using one or more reflective grating chips. The Raman laser beam optics may be simplified using combiners and separators. For LPAI systems sensing along three axes, various optical switching schemes may be employed, including ones that generate variable data-rates with a primary sensing axis having a higher data-rate than the secondary sensing axes. Further, by combining various laser beams in a time-multiplexed manner, the number of optical fiber tethers to a sensor head may be reduced.

The invention discloses a double-shaft tracking device, a double-shaft tracking support and a photovoltaic street lamp, the double-shaft tracking device comprises a base bottom plate, a pitch angle adjusting assembly, an azimuth angle adjusting assembly and a rotation supporting assembly, the pitch angle adjusting assembly comprises a first driving mechanism, a first turbine, a first connecting rod shaft and a gear transmission mechanism; the azimuth angle adjusting assembly comprises a second driving mechanism, a second turbine and a second connecting rod shaft; the first driving mechanism is used for driving the first turbine to rotate, the first turbine is connected with one end of the first connecting rod shaft, the other end of the first connecting rod shaft is connected with the gear transmission mechanism, and the gear transmission mechanism is connected with the rotary supporting assembly; the second driving mechanism is used for driving the second turbine to rotate, the second turbine is connected with one end of the second connecting rod shaft, and the other end of the second connecting rod shaft is connected with the rotating supporting assembly; the first connecting rod shaft penetrates through the second connecting rod shaft; the device is compact in structure in the height direction and high in space utilization rate.

The invention relates to the technical field of aerospace equipment detection, and discloses an intelligent detection device and method for defects of the inner wall of a complex porous shell. The double-shaft rotating platform is arranged on the base, a hydraulic shell clamping tool is arranged on the double-shaft rotating platform, and the double-shaft rotating platform can drive the hydraulic shell clamping tool to rotate in the horizontal direction and the vertical direction; a precise ball screw guide rail is arranged at the moving end of the six-degree-of-freedom mechanical arm; the detection assembly is slidably connected with the precision ball screw guide rail, and the end of the detection assembly is provided with a camera. Through the synergistic effect of the double-shaft rotating platform and the six-degree-of-freedom mechanical arm, the detection assembly can correspond to any hole channel of the to-be-detected hydraulic shell, and then comprehensive detection of the hole channel of the to-be-detected hydraulic shell is achieved; meanwhile, the precise ball screw guide rail is used for controlling the detection assembly to precisely feed along a straight line, so that precise image acquisition can be carried out on a complex pore channel, and the comprehensiveness and accuracy of pore channel defect identification are improved.

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 invention relates to the technical field of dredging devices, in particular to a river channel dredging device and method for hydraulic engineering. Comprising a fixing frame, the fixing frame is provided with a multi-beam depth finder, a microcontroller and an angle-adjustable carrying frame, the carrying frame is provided with a double-shaft motion platform, the double-shaft motion platform is connected with a desilting frame capable of synchronously horizontally and vertically reciprocating, and the microcontroller is in data connection with the multi-beam depth finder and adjusts the reciprocating frequency and the reciprocating stroke of the desilting frame. A bidirectional buffering anti-collision mechanism is installed on the desilting frame and connected with a positioning seat. The device has the advantages that through linkage of the multi-beam depth finder, the microcontroller and the double-axis motion platform, the problem that a traditional device lacks real-time monitoring and dynamic adjustment is solved, the multi-beam depth finder captures sludge thickness distribution, river bottom terrain and obstacle positions in real time, and after data is directly transmitted to the microcontroller, real-time monitoring and dynamic adjustment are achieved. And the horizontal and vertical reciprocating frequency and stroke of the desilting frame can be accurately adjusted.

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 application relates to a scanning device of a laser radar and a method for optimizing the structure of the scanning device. The scanning device includes a substrate, a scanning mirror, a driving ring, a fast axis and a slow axis; at least one of the fast axis and the slow axis is a stress equalization structure, and the stress equalization structure includes a single-axis structure or a dual-axis structure. A driving hole is provided on the substrate, the scanning mirror is connected to the driving ring through the fast axis, the driving ring is connected to the substrate through the slow axis, and the scanning mirror is arranged at the center of the driving ring, which is arranged at the center of the driving hole. The above-mentioned device optimizes the structure of the traditional fast axis or slow axis into a stress equalization structure, so that the deformation mode of the fast axis or slow axis is transformed from a torsional mode to a bending mode, thereby reducing the stress magnitude in the stress concentration area during the cyclic motion process, and keeping the stress away from the fatigue failure stress threshold, thereby greatly improving the durability of the non-silicon scanning mirror and thereby improving the working life of the device.

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 discloses a chip for a biaxial quartz vibrating beam accelerometer based on four groups of resonant beams. The chip comprises a mounting plate, a circular mass block; the mass block and the mounting plate are connected through the four flexible supporting sheets; the second through hole is a stress isolation and wire outlet hole, and the second through hole is circular and is arranged at the central position of the mass block; and each group of resonant beams comprises two resonant beams which are oppositely arranged on the upper surface and the lower surface of the mass block, and the included angle between each resonant beam and the adjacent flexible supporting sheet is 45 degrees. The included angle between the four groups of resonant beams and the flexible supporting sheet is 45 degrees, so that the acceleration measurement in the X direction and the Y direction can be realized; because each group of resonant beams comprises an upper resonant beam and a lower resonant beam, the sensitivity of the accelerometer is improved by the differential output design of the resonant beams in different groups; when acceleration is input in any direction, the flexible supporting sheet can generate linear displacement, and the mechanical environment adaptability of the chip is effectively improved.

The utility model belongs to the technical field of petroleum drilling equipment, and particularly relates to an automatic cladding welding device for a high-wear-resistance steel tooth roller bit, which comprises a double-shaft positioner, a six-shaft manipulator, a cooling-water machine, a manipulator programming touch screen window, a master console, a laser gun, a manipulator control cabinet, a laser and two powder feeders, the powder feeder is connected with the laser gun through a pipeline, powder is fed into the laser gun through argon, the laser gun is installed at the tail end of the six-axis mechanical arm, the double-axis positioner is located on one side of the six-axis mechanical arm, the six-axis mechanical arm is electrically connected with the mechanical arm control cabinet through a line, and the mechanical arm control cabinet is electrically connected with the powder feeder through a line. The mechanical arm control cabinet is electrically connected with the mechanical arm programming touch screen window through a circuit, and the mechanical arm control cabinet is electrically connected with the double-shaft positioner through a circuit. According to the utility model, automatic hardfacing of the steel-tooth roller bit, a large-size roller bit and a medium-size roller bit (more than 6 inches), especially a small-size steel-tooth roller bit, is realized.

A device for the dynamic positioning of a plurality of laser beams (2) on a target plane (5) has at least one dynamic deflection device (3), with which the laser beams (2) can be directed onto the target plane (5) and guided over a respective area of the target plane (5). The dynamic deflection device (3) has an arrangement (9) of a plurality of single-axis and / or dual-axis microscanners (10), each of which can be controlled independently of one another. The number of microscanners (10) is selected and the laser beams (2) are guided in the arrangement (9) such that each laser beam (2) is directed onto the target plane (5) by way of a different microscanner (10). The microscanners (10) have mirrors with an oval or rectangular mirror shape, and are arranged such that, in a zero position of the microscanners (10), a long axis of the oval or rectangular mirror shape lies in a plane of incidence of the laser beam (2) that is incident on the respective microscanner (10).

The utility model relates to the technical field of optical fiber communication and laser, in particular to a double-shaft double-wavelength polarization-maintaining ultrahigh-power optical fiber amplifier, which comprises a polarization-maintaining beam splitter, a polarization-maintaining wavelength division multiplexer, a polarization-maintaining doped fiber, a polarization-maintaining beam combiner, a double-cladding polarization-maintaining optical fiber and a polarization-maintaining coupler, the other side of the polarization-maintaining wavelength division multiplexer is in optical fiber connection with a polarization-maintaining doped fiber, the other side of the polarization-maintaining doped fiber is connected with a polarization-maintaining beam combiner, the other side of the polarization-maintaining beam combiner is connected with a double-cladding polarization-maintaining optical fiber, and the other side of the double-cladding polarization-maintaining optical fiber is in optical fiber connection with a polarization-maintaining coupler; according to the utility model, stable and high-power output can be realized on two different spectral wavelengths at the same time, the polarization state of signal light is kept unchanged, the signal quality and the system performance in an optical communication system and industrial laser application are remarkably improved, the dual-wavelength high-power output and the polarization maintaining performance are realized, and the application range is wide. And the reliability and efficiency of the system are improved.

Vehicle light (1000), which includes the following: a substrate (1008); a lens (1002) wherein a lamp chamber (1022) is formed between the lens (1002) and the substrate (1008) to accommodate a light source (1024), wherein the lens (1002) has a horizontal axis (H) and a vertical axis (V), an alignment element (1014) which extends from the lens (1002) in at least three sections (1010) parallel to the substrate (1008), each of the three sections (1010) having an opening (1038) which is aligned with a corresponding opening (1028) in the substrate (1008); a two-axis adjustment mechanism (1030) comprising the following: three elements (1032, 1034, 1036), each element extending through the respective opening of one of the at least three sections (1010) and the corresponding opening in the substrate (1008), the three elements (1032, 1034, 1036) having the following: a fixed element (1032) which is fixedly connected to both the substrate (1008) and the alignment element (1014) and is arranged on both the horizontal (H) axis and the vertical (V) axis; a vertical adjustment device (1034) which is fixedly attached to the alignment element (1014) and movable with respect to the substrate (1008), wherein the vertical adjustment device (1034) is arranged on the horizontal axis (H) and is configured such that the lens (1002) can be adjusted with respect to the vertical axis (V); and a horizontal adjustment device (1036) which is fixedly attached to the alignment element (1014) and movable with respect to the substrate (1008), wherein the horizontal adjustment device (1036) is arranged along the vertical axis (V) and is configured such that the lens (1002) can be adjusted with respect to the horizontal axis (H); and a flexible skirt (1006) which frames a front surface (1004) of the lens (1002) from which light emerges without gaps, wherein the flexible skirt (1006) extends towards the substrate (1008) to enclose the lamp chamber (1022).

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.

Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a retardation layer stacked on one surface of the polarizer and comprising a positive B layer and a negative B layer, wherein the positive B layer is positioned between the polarizer and the negative B layer, the positive B layer has, at a wavelength of 550 nm, an in-plane retardation of 30 to 150 nm and a degree of biaxiality of -2.0 to 0, the negative B layer has, at a wavelength of 550 nm, an in-plane retardation of 30 to 150 nm and a degree of biaxiality of 1.0 to 3.0, and, with respect to a light absorption axis of the polarizer, a slow axis of the positive B layer forms -1 to 1°, and a slow axis of the negative B layer forms -1 to 1°.

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.

The present invention relates to the field of laser spectrum alignment and adjustment, and specifically to a method for measuring and eliminating the deflection angle between the optical axis and the mechanical axis of a laser alignment system. The method comprises the following steps: determining the spatial position of the laser alignment system's output beam using a pinhole diaphragm, measuring the pinhole diaphragm's spatial coordinates and the laser alignment system's mechanical axis using a three-dimensional coordinate measuring machine, calculating the spatial angle between the two axes, and compensating for the angle using a wedge. This method can achieve miniaturization of the laser spectrum detection system. The method is simple and reliable, with simple steps, and can be widely used for coaxial adjustment of various laser spectrum detection systems, improving assembly and adjustment efficiency.

The utility model belongs to the technical field of gate monitoring devices, and provides a protective structure for a double-shaft inclinometer based on gate monitoring. On the basis of the installation panel, the protection box body is arranged on one side of the installation panel, the fixed inner box and the movable inner box are arranged in the protection box body, the movable inner box can slide relative to the protection box body, and when the double-shaft inclinometer is installed, a cable of the double-shaft inclinometer penetrates through the fixed inner box and is fixed relative to the fixed inner box through the first clamping piece. The external cable penetrates through the movable inner box and is kept relatively fixed with the movable inner box through the second clamping piece, after the cable of the double-shaft inclinometer is connected with the external cable, when the situations of paying-off jamming, no paying-off and the like occur, the external cable is pulled, and then the movable inner box is driven to slide outwards relative to the protective box body, so that the cable of the double-shaft inclinometer is protected. According to the structure, only the connection between the external cable and the cable of the double-shaft inclinometer can be broken, so that the technical problem that the sensor cable is easily broken or the connection between the sensor cable and the double-shaft inclinometer is disengaged due to the existing mounting structure is solved.

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 present application provides a method for automatic adjustment of the blade angle of a dual-axis dual-duct compressor tester, which belongs to aviation engine testing. The method includes: obtaining a speed-angle relationship curve of the compressor blade speed and the blade angle, and obtaining a target blade angle according to the current speed of the compressor blade and the relationship curve; constructing a blade angle automatic adjustment system model based on the target blade angle as output and the given blade angle as input, and constructing a blade angle given angle transfer function in the blade angle automatic adjustment system model based on PID control; constructing a multi-objective optimization function of the blade angle given angle transfer function; optimizing the multi-objective optimization function based on a genetic algorithm to obtain the PID control optimal control parameters of the blade angle given angle transfer function, and automatically adjusting the blade angle of the compressor tester based on the PID control optimal control parameters.