310 results about "Linear displacement" patented technology

A linear displacement sensor based on electric field self-coupling, comprising a moving scale base (1) and a fixed scale base (2). One or more paired electrode units are provided on the side surface of the moving scale base (1) facing the fixed scale base (2); each paired electrode unit comprises at least three sensing electrode groups spaced in the length direction of the moving scale base (1); each sensing electrode group comprises one excitation electrode (1-1) and one sensing electrode (1-2) spaced in the length direction of the moving scale base (1). A plurality of modulation unit groups arranged in the length direction of the fixed scale base (2) are provided on the side surface of the fixed scale base (2) facing the moving scale base (1); in the length direction of the fixed scale base (2), all the paired electrode units on the moving scale base (1) can respectively correspond to the same number of adjacent modulation unit groups on the fixed scale base (2); each modulation unit group comprises one modulation unit F(2-1) and one modulation unit G(2-2); the modulation unit F(2-1) can correspond to at least one sensing electrode group in the paired electrode units in the length direction of the fixed scale base (2).

The invention discloses an electromagnetic actuator with a rigidity compensation function. The end face of the inner side of a stator iron core of a C-shaped structure is provided with a trapezoidal slope notch, and the working face of a rotor is a slope matched with the notch of the stator iron core; the N pole and the S pole of the permanent magnet are attracted to the upper end arm of the stator core, the coil winding is wound on the yoke portion of the stator core, the flexible guide mechanism is connected with the rotor and the base, the lower end arm of the stator core is connected with the base through a fastener, and the fastener is screwed to adjust the relative distance between the end face of the stator core and the working face of the rotor. According to the invention, the rotor and the stator core form an inclined air gap, and the linear displacement of the rotor is not equal to the normal thickness of the air gap any more, but is amplified in geometrical relationship. The fundamental contradiction of strong coupling of the stroke and the thickness in a traditional plane air gap is overcome, on the premise that a small initial normal air gap is maintained, the macroscopic motion stroke several times of the thickness is achieved, and the problem that large stroke and high linearity are difficult to consider at the same time is solved from the structural principle.

The invention discloses a high-precision dynamic linear displacement metering device based on laser scattering suppression, and relates to the related technical field of displacement monitoring, and the device comprises a host, rails, a stabilizing mechanism, supporting legs, a measuring mechanism, a data processing mechanism, a data processing mechanism, a data processing mechanism, a data processing mechanism, a data processing mechanism and a data processing mechanism, the host is slidably installed above the rails and is used for horizontally moving the host; the stabilizing mechanism is installed between the rails and is used for keeping the host in a horizontal state; the stabilizing mechanism is connected between the track and the main machine, the two adjusting mechanisms are installed between the stabilizing mechanism and the main machine and used for adjusting the horizontal angle and the inclination angle of the main machine, and the track, the stabilizing mechanism, the supporting feet and the adjusting mechanisms are arranged to cooperate with each other. The invention relates to a multi-dimensional angle adjusting device, in particular to a multi-dimensional angle adjusting device, which solves the problem that existing equipment cannot realize horizontal movement, autonomous leveling and multi-dimensional angle adjustment in industrial field application. The problems that an existing dynamic linear displacement metering device is insufficient in environmental adaptability and weak in anti-interference capacity, and the measurement stability is limited by external conditions are solved.

The invention relates to an intelligent temperature control rock heat-water-force-sound-light multi-field coupling disturbance shearing device and a use method of the intelligent temperature control rock heat-water-force-sound-light multi-field coupling disturbance shearing device. A disturbance shearing mechanism composed of a trapezoid pressing rod, a constant damper and a spring is additionally arranged on the driving side of the lower shearing box. When the tangential loading shaft is propelled at a constant speed, the mechanism can convert stable linear displacement into disturbance shear load of periodic loading and unloading, so that engineering power disturbance is simulated. According to the device and the method, periodic shear disturbance is synchronously applied to a rock sample in a high-temperature seepage environment, mechanical response, seepage characteristic change, internal micro-fracture and surface full-field deformation of the rock sample are comprehensively observed, and an advanced test means is provided for researching a catastrophe mechanism of a deep rock mass under the action of multi-field coupling and dynamic disturbance.

A planetary roller screw adapted for solving insufficient structural strength of the conventional planetary roller screw while proceeding with precise motion control is disclosed. The planetary roller screw includes a main screw having an external thread, a nut having an internal thread, and a planetary assembly having rollers. Each roller includes an outer periphery having an external thread. The pitches of the external thread of the main screw, the internal thread of the nut, and the external thread of each roller are identical. The helix direction of the external thread of the main screw is opposite to that of the internal thread of the nut. When one of the main screw, the nut, and the planetary assembly acting as a driving member rotates, a linear displacement direction of the planetary assembly relative to the nut is opposite to that of the main screw relative to the planetary assembly.

The displacement reduction type precise piezoelectric displacement table comprises an integrated guide base, a displacement reduction mechanism is arranged in the integrated guide base in a matched mode, a piezoelectric ceramic driver is arranged in the displacement reduction mechanism, and the piezoelectric ceramic driver serves as a power source to drive the displacement reduction mechanism to deform. The reduced displacement is generated and is conducted to the integrated guide base, so that nanoscale linear displacement is generated; according to the invention, through the integrated displacement reduction mechanism, the high resolution of the piezoelectric ceramic driver is further improved. Any tiny stroke of the driving source can be accurately reduced to sub-nanometer level output displacement. The design of controlling precision with precision provides a more stable and more controllable technical path for applications requiring extreme precision, such as scanning probe microscopes and quantum dot positioning.

The invention belongs to the technical field of aircraft assembly, and discloses an aircraft front wheel turning angle monitoring device and method, and the device comprises a mechanical sensing module, a signal processing module and a signal receiving device. The mechanical sensing module is detachably mounted on a shock strut of a nose landing gear of an aircraft, and the rotary motion of the shock strut is converted into a linear displacement signal through a gear transmission mechanism in the mechanical sensing module; the signal processing module analyzes the displacement signal into a front wheel turning angle electric signal; and the signal receiving device receives and displays the angle value. The invention further discloses a corresponding monitoring method. The device adopts a modular and non-invasive design, solves the problems that the turning angle of the front wheel cannot be monitored in real time and the over-limit risk exists in the aircraft traction process, has the advantages of being convenient and fast to install, accurate in measurement and wide in applicability, and remarkably improves the safety and the working efficiency of flight guarantee.

The invention discloses a machine tool cutter head fault detection method and device, an electromagnetic type linear displacement sensor is arranged at the corresponding position of a machine tool cutter head, and the method comprises the steps that based on electromagnetic type linear displacement sensing, a displacement signal sequence of the machine tool cutter head is collected in real time; performing adaptive signal decomposition on the displacement signal sequence to obtain at least one first intrinsic mode component and one second intrinsic mode component; calculating a first energy value sequence of the first intrinsic mode component in the continuous time interval, and calculating a second energy value sequence of the second intrinsic mode component; based on the first energy value sequence and the second energy value sequence, the fault type of the machine tool cutter head is judged; the fault types comprise a tool bit deflection fault and a main shaft chip clamping fault. By adopting the electromagnetic linear displacement sensor and combining a self-adaptive signal decomposition technology, the interference of a complex industrial environment on detection is effectively overcome, and accurate distinguishing and reliable detection of a machine tool cutter bit deflection fault and a main shaft chip clamping fault are realized.

The utility model belongs to the technical field of barometers, and particularly relates to a barometer which comprises a meter shell, an air inlet, a meter cover, a dial plate and a pointer, the air inlet is arranged on the meter shell, air transmits pressure to a piston through the air inlet, the piston converts the air pressure into linear displacement, and the pointer is arranged on the meter shell. The piston transmits power to the gear output piece through the two-stage transmission mechanism, the gear output piece is connected with the pointer and drives the pointer to deflect on the dial plate, the piston is further connected with a reset piece, and the reset piece acts on the piston and provides pressure opposite to gas acting force. By means of a two-stage transmission mechanism composed of the double sector gears, the rack frame and the cylindrical gear, tiny linear displacement of the piston is amplified and converted into remarkable deflection of the pointer, the detection sensitivity of tiny air pressure changes is remarkably improved, the reading range is expanded, and reading is more accurate and visual.

The invention relates to the technical field of waste heat recovery, and discloses a power plant cooling water waste heat recycling device which comprises a cylinder. At least two hot water pipes; at least two water gathering rings; the dirt cleaning part comprises a cleaning belt, the cleaning belt wraps the heat exchange pipe through a limiting frame, the cleaning belt is driven by a driving mechanism, and the driving mechanism has driving force for driving the cleaning belt to be attached to the heat exchange pipe for circumferential transmission and linear displacement force for driving the cleaning belt to move in the radial direction of the heat exchange pipe; according to the design, through dual driving force of the driving mechanism, the cleaning belt is in circumferential fit transmission and radial movement along the heat exchange tubes, can be tightly attached to the outer walls of the bent and parallel heat exchange tubes and scrapes CaCO3 scale layers of all the tube sections, the cleaning problem of the heat exchange tubes of complex structures is solved, and the situation that dirt is attached to the outer walls of the heat exchange tubes, consequently, heat resistance is increased, and the service life of the heat exchange tubes is prolonged is avoided. And the heat exchange efficiency is reduced.

The utility model relates to a clutch handle for rapid stay wire adjustment, which comprises a handle connecting seat, a handle, a stay wire joint and an adjusting nut, a rotary mounting part is arranged at one end of the handle connecting seat far away from the handle, the adjusting nut is rotatably connected onto the rotary mounting part, and the stay wire joint is in threaded connection with the inner wall of the adjusting nut and rotates along with the adjusting nut. The adjusting nut and the handle connecting seat form a revolute pair through the rotary mounting portion, so that the adjusting nut can freely rotate around the axis of the rotary mounting portion, and the stay wire connector is embedded into the inner wall of the adjusting nut in a threaded fit mode. Threads on the inner wall drive the stay wire connector to generate linear displacement in the axial direction (namely the direction parallel to the axis of the rotary installation part), so that the telescopic position of the stay wire connector is directly changed, and linear adjustment of tensioning or loosening of the stay wire is achieved.

The invention discloses a wide-range absolute type linear displacement sensor based on photoelectric linear coding and a measuring method. The upper surface of a sizing base body is provided with a row of excitation electrodes and covered with a light absorption insulating layer covering all the excitation electrodes, and the light absorption insulating layer is provided with two columns of reflective patterns; and the two columns of reflective patterns are different and coprime in quantity. The area corresponding to the unit length of each reflective pattern changes in a function relation mode in the length direction. The lower surface of the movable ruler base body is provided with an induction electrode, a light-emitting module and two rows of photoelectric sensors, the two rows of photoelectric sensors directly face the two rows of reflective patterns, and the number of each row of photoelectric sensors is two. The light emitting module sends light beams to the two columns of reflective patterns, and the photoelectric sensor collects light intensity reflected by the reflective patterns and outputs obtained photoelectric signals to the signal processing circuit. The photoelectric sensing principle is adopted for rough measurement, the transverse size of the sensor can be greatly reduced, fine measurement and rough measurement do not interfere with each other, the measurement precision is high, and implementation is easy.

The invention belongs to the technical field of track detection equipment, discloses a wheel set lifting and leveling device of a vehicle wheel set full-size measuring machine, and solves the problems that in the prior art, the wheel set lifting precision is insufficient, and the reference height cannot be accurately determined. The device comprises a movable box body, a lifting mechanism, a wheel set supporting and driving mechanism, a lifting displacement detection mechanism and a rim measurement mechanism, the lifting mechanism drives a lifting frame to ascend and descend through a lifting oil cylinder, a linear displacement sensor detects lifting displacement in real time, it is guaranteed that the heights of four driving wheels are consistent, and horizontal lifting of a wheel set is achieved; the wheel rim measuring mechanism accurately measures and calculates the diameter of a wheel rim through a three-point method in cooperation with a displacement sensor, the height of the center line of a wheel set is determined, and unification of measuring references is achieved. The device is compact in structure, high in lifting and leveling precision and stable in detection data, can greatly improve the accuracy of full-size measurement of the motor train unit wheel set, and meets the use requirements of a mobile measuring machine.

The invention provides a three-redundancy LVDT (Linear Variable Differential Transformer) consistency adjusting device, and belongs to the technical field of airborne servo sensors. The connecting plate is used for fixing the LVDT rotor; the three springs are respectively arranged on the three LVDT rotors in a sleeving manner; a housing; a pressing plate; the three adjusting ejector rods are used for adjusting the positions of the three LVDT stators; and the three scribing turntables are fixed to the three adjusting ejector rods respectively and used for determining the adjusting distances of the three adjusting ejector rods, angle scales are engraved on the outer sides of the side plates, indicating lines are arranged on the scribing turntables, and the indicating lines are matched with the angle scales to read the rotating angles of the adjusting ejector rods. According to the adjusting device, linear displacement is converted into angular displacement, angle scribed lines and screw pitch conversion, accurate quantitative adjustment of the consistency of the three-redundancy LVDT is achieved, and the output precision of the three-redundancy LVDT is improved.

The automobile ornament electroplating device with the good safety comprises a bottom plate, an electroplating pool, a hot air dryer and a collecting disc, the electroplating pool is connected with the bottom plate, the hot air dryer is arranged on the side, away from the electroplating pool, of the bottom plate, the collecting disc is arranged between the electroplating pool and the hot air dryer, and the collecting disc is connected with the bottom plate. Through cooperative work of the linear displacement device and the dislocation translation device, the hanging rack device can be stably driven to linearly move between the electroplating pool and the collecting disc, the linear moving path is the shortest path, and in the moving process of the hanging rack device, the hanging rack device is not prone to falling off. The flow guide plate can guide electrolyte dripped from the hanger device and the workpiece into the electroplating pool and the collecting disc respectively, so that the electroplating liquid carried by the hanger device and the workpiece is effectively prevented from dripping on the outer side of the automobile ornament electroplating device; the technical problems that waste is caused by spattering of the electroplating liquid, and the working environment of the automobile ornament electroplating device is affected badly are solved.

The invention discloses a displacement measurement method, system and device based on double-circle characteristic object self-calibration. The method comprises the steps that a double-circle characteristic object composed of a center circle and an auxiliary circle is arranged; double-circle images are continuously collected, double-circle pixel coordinates and pixel radiuses are extracted, and recognition effectiveness is ensured by combining double-circle joint verification; calculating the scale factor of each frame in real time based on the actual radius of the central circle, the pixel radius and the temperature / motion blur compensation coefficient; and converting the pixel offset of the central circle into linear displacement in the X / Y direction by taking the first frame as a reference and combining a scaling factor, and determining the in-plane angular displacement through a central circle-auxiliary circle characteristic vector included angle. The system comprises a bicircle feature object module, an image acquisition module, a feature recognition module, a self-calibration module and a displacement calculation module. The dynamic measurement device comprises a fixing assembly, an industrial camera, a processor and an output assembly. The method does not need to calibrate camera parameters in advance, is not influenced by object distance changes, can realize high-precision two-dimensional dynamic displacement measurement, and is suitable for health monitoring of structures such as bridges and buildings.

The utility model relates to the technical field of measuring grating rulers, and discloses a high-precision linear displacement measuring grating ruler which comprises a grating ruler, a sliding block is slidably connected in the grating ruler, mounting grooves are formed in the front end and the rear end of the grating ruler, and limiting baffles are fixedly connected to the left end and the right end of the grating ruler; the surface of the grating ruler is fixedly connected with a fixed supporting column. According to the utility model, the distance adjusting support rod is in threaded connection with the fixed transverse plate through the limiting screw rod, so that a micro-distance adjusting function can be realized, and the expansion and contraction amount of the distance adjusting support rod can be accurately controlled by rotating the limiting screw rod, thereby adjusting the position of the mounting clamping frame, adapting to mounting bases or measurement objects with different sizes, improving the universality and flexibility of the device, and reducing the cost. And through sliding adjustment of the limiting screw rod from the interior of the fixed transverse plate, limiting and clamping can be carried out according to the distance between the limiting supporting plate and the bottom of the grating ruler, and the using balance and clamping stability of the grating ruler are guaranteed.

The utility model discloses a mechanism suitable for monitoring the oil pressure of a high-temperature hydraulic actuation product. The mechanism comprises two parts: a mechanical electrical signal conversion mechanism and a pressure transmission mechanism. Wherein the mechanical electrical signal conversion mechanism comprises a microswitch, a mounting seat, a rocker arm, a pin, a rocker arm torsion spring, a separation blade and a contact; the pressure transmission mechanism comprises a valve element, a valve sleeve, a spring, an outer end spring seat, an inner end spring seat and a plug. One end of the pressure transmission mechanism is communicated with oil pressure, the other end of the pressure transmission mechanism is connected with the mechanical electrical signal conversion mechanism, the pressure transmission mechanism plays a role in oil pressure change transmission and transmits the oil pressure change to the rocker arm of the pressure switch in a linear displacement mode, and the rocker arm switches on or switches off the microswitch in the moving process. And the microswitch transmits an on or off signal to a remote control terminal, so that the monitoring of the oil pressure is realized. The embodiment of the utility model has the advantages of compact structure and high applicable temperature, and can extend the application scene.

The utility model is suitable for the technical field of linear displacement sensors, and provides a linear displacement sensor with an anti-interference function, which comprises a sensor shell, a bottom plate assembly and an electric plate assembly, and is characterized in that the sensor shell is suitable for providing an installation environment; a plurality of groups of clamping grooves are formed in the outer side of the sensor shell in a surrounding manner; the bottom plate assembly is arranged at the top end of the sensor shell; the bottom plate assembly comprises a bottom plate shell, the bottom plate shell is matched with a sensor shell in shape, multiple sets of bottom plate buckles are arranged on the outer wall of the bottom plate shell in a surrounding mode, and the bottom plate shell is provided with a metal shielding layer. And the electric plate assembly is arranged between the sensor shell and the bottom plate assembly. The device solves the problem that the sensor body is interfered by an external metal interference source to cause inaccurate measurement data, and achieves the effects of improving the detection quality of the sensor and improving the magnetic interference resistance of the sensor.

This application provides an impeller injection mold for easy demolding, relating to the field of impeller injection molding technology. The easy-to-demold impeller injection mold includes a fixed mold core formed by a base and an upper seat, and a movable mold core capable of linear displacement. Multiple splicing templates are symmetrically arranged in a ring above the upper seat, and these templates are driven to linear displacement by push rods penetrating their inner surfaces. Injection groove one and injection groove two are respectively provided on both sides of the splicing templates for injection molding impeller blades. This solution achieves rapid mold opening and closing through the cooperation of the movable mold core, push rods, and the inclined grooves of the injection mold. Combined with a locking assembly to ensure injection sealing and a lower mold push mechanism to assist demolding, it effectively achieves rapid and stable demolding of impeller products, improving production efficiency and reducing product loss.

The invention belongs to the technical field of eye vision optics, and relates to a scanning type human eye peripheral aberration measuring system and method based on wavefront sensing. The system comprises a measuring light path, an off-axis scanning structure, a full meridian scanning structure, an echo light beam restraining and folding lens group, a conjugate adjusting structure, a sighting mark module, an aligning and imaging module and a control and communication system. The off-axis scanning structure comprises a galvanometer and a linear displacement mechanism, and through the linkage of the position and the angle of the galvanometer, the incident main light enters the entrance pupil center of the detected eye at different off-axis angles; in the full meridian scanning structure, a rotating table drives a front structure to rotate around a system main shaft; echo beams enter a rear fixed light path through the center of the rotary table via the reflector. According to the system, full meridian, large off-axis angle and programmable path human eye peripheral aberration measurement can be realized under the condition that the head and eyeballs of a subject do not need to move, and the system has the advantages of compact structure, small additional aberration, high measurement precision and efficiency and the like.

The invention provides a gear hobbing machine execution mechanism helical angle error on-line detection system comprising a first angular displacement sensor used for collecting workbench angular displacement data; the second angular displacement sensor is arranged on a gear hobbing machine cutter bar shaft and used for collecting cutter bar angular displacement data; the linear displacement sensor is arranged on the gear hobbing machine tool rest and used for collecting linear displacement data of the tool rest in the vertical direction; the data acquisition card is used for processing the angular displacement data of the workbench, the angular displacement data of the cutter bar and the linear displacement data of the cutter rest in the vertical direction according to the current main time base, and the current main time base is dynamically switched according to the channel stability score of each channel; and the processor is connected with the data acquisition card and is used for determining the helical angle error of the helical gear according to the processed angular displacement data of the workbench, the angular displacement data of the cutter bar and the linear displacement data of the cutter rest in the vertical direction. According to the invention, the detection precision of the helical angle error of the gear hobbing machine execution mechanism can be improved.

The application provides a liquid film thickness calibration device and a thickness calibration method thereof. The liquid film thickness calibration device comprises a linear displacement table, a sensor holding device, a water immersion ultrasonic sensor, a coupling water tank, a force sensor, a displacement platform, a first angular displacement platform and a second angular displacement platform. The sensor holding device is located above the coupling water tank. An opening is formed at the bottom end of the coupling water tank to be sealingly connected with the boss of a bearing standard test block. The displacement platform is located below the coupling water tank. The top end surface of the upper moving plate of the displacement platform is used for placing the force sensor to abut against the groove of the shaft standard test block. The first angular displacement platform and the second angular displacement platform are arranged below the displacement platform to adjust the inclination of the plane of the upper moving plate and further adjust the parallelism of the shaft standard test block relative to the bearing standard test block. The liquid film thickness calibration device solves the problem of high-precision parallelism adjustment of the contact interface of the friction pair by monitoring the contact force indication in real time and adjusting the angular displacement table.

1. The name of the design product: pull rope sensor. 2. The use of the design product: for measuring the linear displacement, distance or position of moving objects. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The utility model relates to the technical field of image acquisition equipment, in particular to a computer image acquisition and transmission device which comprises a base, an image acquisition supporting assembly is arranged at the top of the base, and an image acquisition and adjustment device is arranged at the top of the image acquisition supporting assembly; according to the utility model, the supporting assembly is arranged, and the servo motor, the screw rod body, the first connecting rod and the second connecting rod of the connecting rod mechanism cooperate with each other, so that the image acquisition position and angle can be accurately controlled. The screw rod body converts the rotation motion of the servo motor into accurate linear displacement, and then the direction of force is transmitted and converted through the connecting rod mechanism, so that the supporting rod, the top block and other components can carry out fine and accurate angle adjustment on the image acquisition device, and the requirement of acquiring target object images from different visual angles is met; and clear and comprehensive images meeting specific requirements can be obtained no matter a tiny electronic component or a larger industrial product is shot.

The utility model relates to a film base belt conveyor, in particular to a telescopic film base belt conveyor. Comprising a conveyor base which is a U-shaped frame, a telescopic adjusting mechanism which is installed on the left side of the top end of the conveyor base, and a driving tensioning mechanism which is installed on the right side of the top end of the conveyor base, the lead screw motor is installed on the right side of the top end of the conveyor base. The bearing seat is installed on the left side of the top end of the conveyor base, the lead screw is connected to the bearing seat in a threaded mode, and the other end of the lead screw is connected with an output shaft of the lead screw motor. According to the scheme, the lead screw motor is adopted to control the lead screw to rotate, accurate linear displacement of the nut seat is achieved, and the length of the conveyor sheet base belt can be rapidly and accurately adjusted.

This utility model relates to the field of vibratory feeder technology and discloses a vibratory feeder for a flow regulator, including a base, a sliding frame slidably connected inside the base, a supporting shell fixedly connected to the top of the sliding frame, a sliding rod slidably connected inside the supporting shell, and a vibratory feeder fixedly connected to the top of the sliding rod. This utility model utilizes the linear displacement characteristics of the threaded rod to precisely control the position of the moving block, thereby flexibly adjusting the rotation radius of the connecting column. This design allows the vibration amplitude to be adjusted in real time according to material characteristics such as weight, surface friction coefficient, or flow requirements, enhancing the equipment's adaptability to different working conditions. The threaded connection structure avoids the risk of slippage or jamming of the moving block, while the meshing of the first bevel gear with the drive motor transmits high torque, ensuring smooth and controllable changes in vibration amplitude during adjustment, and preventing material spillage or equipment resonance caused by sudden changes.

This invention discloses a high-load, high-precision, reset-type automatic calibration system for a balance. Each automatic loading subsystem uses a screw jack to lift and lower weights, transferring different weight forces through a boom to a steel belt and then to a loading head. The loading head then transfers the load to the balance being calibrated, achieving multi-component load application. Displacement sensors measure distance changes at various locations and calculate the deformation. The reset subsystem adjusts and resets the balance's attitude. Each subsystem has a compact structure and clearly defined functions. The reset subsystem maximizes the use of the advanced performance of servo motors, making the reset accuracy of linear displacement equivalent to the motion accuracy of the servo motor, and the reset accuracy of angular displacement is also improved accordingly. The control logic of each subsystem, including the reset subsystem, automatic loading system, and displacement measurement system, is simple and easy to integrate, achieving automated calibration and significantly improving calibration efficiency while freeing up manpower.

The present application relates to the field of rocket engine nozzle testing, and particularly relates to a flexible rocket engine nozzle cold swing test simulation test system and a test method thereof, the system comprising a pressure vessel, a servo mechanism, an inclinometer, a linear displacement sensor and a real-time simulator, the pressure vessel provides a cold pressurized environment, the servo mechanism drives the nozzle to swing, the inclinometer calibrates the swing angle, and the linear displacement sensor detects the swing and outputs an analog signal. During testing, the swing angle-voltage relationship is calibrated through the inclinometer and the linear displacement sensor; then the real-time simulator sends a sine instruction to drive the nozzle to swing, and synchronously collects the displacement signal, analyzes the dynamic characteristics of the servo mechanism and the coordination with the nozzle. Through the swing angle-voltage equation obtained by calibrating the swing, combined with continuous attitude simulation controlled by the simulator, the nozzle swing angle data is calculated, and the dynamic response of the servo mechanism under the pressurized condition is evaluated, the present application can truly reflect the continuous swing working condition of the nozzle, and improve the reliability and authenticity of the test data.