743 results about "Rotary encoder" patented technology

The invention provides a filling control method and system based on online parameter identification. According to the method, the synchronous error data of each servo shaft in the multi-shaft servo system is acquired, the error time sequence matrix is constructed by the synchronous error data according to the time sequence, and the displacement feedback data of each servo shaft in the multi-shaft servo system is acquired in real time through the high-precision rotary encoder; a dynamic compensation signal is generated according to the deviation between the displacement feedback data and a preset track, online estimation is carried out on mechanical vibration disturbance of the multi-axis servo system based on the error time sequence matrix, a disturbance parameter estimation value is obtained, the dynamic compensation signal and the disturbance parameter estimation value are fused, and a servo synchronous compensation amount is generated; according to the technical scheme, through fusion of real-time parameter identification and dynamic compensation, the filling precision and efficiency are remarkably improved, meanwhile, the manual debugging complexity is reduced, and a reliable solution is provided for high-stability production under multiple working conditions.

The invention provides a liquid pumping apparatus, system and method for increasing the flow of fluid in a gravity feed network. The invention provides an in-line main pipe with upstream and downstream portions flanking a manifold that houses a check valve. One or more branch pipes may form a fluid bypass around the manifold. Each branch pipe includes a pump configured to accelerate the fluid in at least partially the same direction as the downstream flow. A sensor may be adapted to measure a parameter related to the liquid level in the main pipe. A rotary encoder may be adapted to measure the flow rate in the main pipe as a proportional function of the check valve angle, under gravity flow conditions. A control system may energize the pumps when the liquid level in the main pipe is above a predetermined threshold according to the parameter.

The invention provides a real-time monitoring system and method for sorting of a digital twin-driven Delta mechanical arm. According to the system, firstly, a physical experiment platform is built, and a virtual model is built through SolidWorks, 3DMAX and Unity 3D. A communication framework is designed, and wireless communication of the PLC, the sensor, the mechanical arm, the conveying belt and the digital twin system is achieved. Positive and inverse kinematics analysis and Cartesian space trajectory planning are carried out on a Delta robot, and a related algorithm is packaged into an MATLAB function and compiled into a DLL library for C # calling. The system collects joint angle data in real time based on a rotary encoder, transmits the joint angle data to a digital twin system through an OPC UA protocol, and drives a virtual mechanical arm model after resolving, so that high-precision and low-delay virtual-real synchronous pose reconstruction is realized. In addition, the system also develops a collision detection function based on a bounding box algorithm, and performs visual detection by using camera calibration and a YOLO model.

The invention relates to the technical field of hoisting equipment intelligent control based on multi-sensor cooperation, and discloses a hoisting equipment intelligent control method based on multi-sensor cooperation. A control unit reads and stores parameters such as air density, windward projection area, wind load arm length, arm section rotational inertia, rated output force of a hydraulic cylinder, sampling period and the like, and static self-inspection and dynamic calibration are performed on a wind speed sensor, a rotary encoder and a pressure sensor respectively; multiple paths of wind speeds are collected in parallel during operation, fused wind speeds are obtained through weighted fusion after abnormities are removed, and the wind load torque is calculated and limited by combining the windward area and the force arm length; reading two continuous encoder angle differences, performing amplitude limiting, calculating an angular velocity and kinetic energy, performing adaptive adjustment according to kinetic energy deviation, and performing amplitude limiting on a damping coefficient to generate a damping torque; and the amplitude-limited wind load torque and damping torque are synthesized into total control torque, and after amplitude limiting, the total control torque is converted into amplitude-limiting hydraulic cylinder operation output force which is issued and executed by a control unit.

An omnidirectionally orientable vehicle comprising a main body, arms extending radially therefrom and orientable propulsion modules. Each propulsion module is coupled to an arm and comprises at least three propulsion units rigidly attached to the propulsion module. Each propulsion module is coupled to the arm by interposition of a rotary junction formed by a first revolute joint coupled to the arm and a second revolute joint attached to the propulsion module and perpendicularly coupled to the first revolute joint. The first revolute joint allows the propulsion module to rotate around the arm and the second revolute joint allows the propulsion module to rotate around an axis perpendicular to the arm providing the propulsion module with two DOF relative to the main body. The vehicle comprises rotary encoders located in proximity to the revolute joints and configured to monitor the orientation of the propulsion modules relative to the main body.

A motor broadly includes a rotor, a flywheel, and an encoder assembly. The rotor is rotatable about an axis and includes a rotor shaft. The flywheel is fixed to the rotor shaft and is rotatable with the rotor shaft. The encoder assembly includes a magnetic sensor assembly and a sensed magnetic element supported by the flywheel.

The invention relates to the technical field of electric transplanting machines, and discloses an electric transplanting machine and a plant spacing self-adaptive adjustment and path dynamic correction method thereof. The electric transplanter comprises a rack, and a seedling conveying mechanism, a transplanting mechanism, a walking mechanism and a control system which are mounted on the rack. A rotary encoder A is arranged on the seedling conveying mechanism to reflect the seedling dropping speed of the electric transplanter, a rotary encoder E is arranged on the walking mechanism to reflect the advancing speed of the electric transplanter, and a rotary encoder C is arranged to reflect the advancing speed of a walking crawler belt on the left side of the electric transplanter. A rotary encoder D is arranged to reflect the forward speed of a right walking crawler belt of the electric transplanter, and an ultrasonic sensor is arranged to monitor the distance between the two walking crawler belts and the two sides of a ridge in real time; the self-adaptive adjustment of the plant spacing and the dynamic correction of the path can be realized in the advancing process of the electric transplanter, so that the plant spacing uniformity and the row spacing uniformity of the electric transplanter during operation can be effectively improved.

An image forming apparatus includes a transfer portion configured to transfer a toner image onto the sheet, a fixing unit configured to fix the toner image transferred by the transfer portion on the sheet, a detection unit arranged between the transfer portion and the fixing unit in a sheet conveyance direction and configured to detect a bending amount of the sheet nipped by the transfer portion and the fixing unit, and a control unit configured to control a conveyance speed of the sheet conveyed by the fixing unit based on a detection result of the detection unit. The detection unit includes a pivot portion configured to pivot when pressed by the sheet nipped by the transfer portion and the fixing unit, and a rotary encoder configured to output a pulse signal in accordance with a pivot amount of the pivot portion.

The invention discloses a novel photoelectric coding measuring method for a multistage coarse high-precision translation rotating platform. The invention relates to the fields of engineering measurement technology, precision machining and the like, and solves the problem that the measurement precision of an existing photoelectric translation rotary encoder needs to be improved. The camera is fixed on the rotating or translating device, and an encoding device of the encoder is fixed on the immovable rack; an encoding device of the encoder consists of an encoding array and a fine measurement light spot which are uniformly distributed; in the rotation or translation process of the motion device, collecting an encoding array image of an encoder and a precise measurement light spot image through a camera; identifying a coarse precision absolute position measurement value of the rotation angle according to the coding array image; according to the number of displacement pixels in a precise measurement light spot image, a coarse-precision absolute position measurement value is subdivided to the measurement precision which is one of the total number of column pixels of a camera, a high-precision measurement value of a rotation angle or a translation amount is calculated according to a gravity center algorithm, and the photoelectric coding measurement precision can be remarkably improved.

The embodiment of the invention discloses an erecting control system for a rocket launched on the sea. The erecting control system for the rocket launched on the sea comprises a control module, a tilt angle sensor, a rotary encoder and an erecting frame. The first input end of the control module is in communication connection with the output end of the tilt angle sensor; the second input end of the control module is in communication connection with the output end of the rotary encoder; the input end of the tilt angle sensor is in communication connection with the erecting frame; the input end of the rotary encoder is in communication connection with the erecting frame; the marine launching angle is adjusted through the tilt angle sensor and the rotary encoder, relying on a launching ship is not needed, the launching cost is reduced, the launching maneuverability is improved, the launching period is shortened, the device can be suitable for different types of rockets, and high marine launching flexibility, good task adaptability and high launching economical efficiency are achieved.

The invention relates to a double-layer coating sheet thickness measuring device and a use method, the double-layer coating sheet thickness measuring device comprises a double-layer coating die head and a drying device, the double-layer coating die head comprises an upper die, a middle die, a lower die, a first material conveying channel and a second material conveying channel, one side of a coating assembly is provided with an X-ray thickness gauge, one side of the drying device is provided with a dual-energy ray thickness gauge, and the X-ray thickness gauge is provided with an X-ray thickness gauge. The dual-energy ray thickness gauge comprises a rack, a first upper sliding rail, a first lower sliding rail, a first sliding block, an X-ray generator, a second sliding block, an X-ray detector, a beta-ray detector, a beta-ray generator, a first turning roller and a second turning roller. A back roller is arranged on one side of the double-layer coating die head and provided with a rotary encoder, the first conveying channel is provided with a first conveying pipe, the first conveying pipe is provided with a first booster pump, the second conveying channel is provided with a second conveying pipe, and the second conveying pipe is provided with a second booster pump. And the surface density of the double-layer coated pole piece and the ratio of the carbon element to the silicon element can be fed back. The device is convenient to use and has a wide market prospect.

The invention belongs to the technical field of civil engineering, and particularly relates to a civil engineering material elevator which comprises a movable base and a shear fork hydraulic elevator, the shear fork hydraulic elevator is assembled on the movable base, and a workbench is fixedly installed at the top of the shear fork hydraulic elevator; the working table further comprises fixing seats, multi-stage push rods and anti-falling mechanisms, the fixing seats are symmetrically and fixedly connected to the left side wall and the right side wall of the movable base, the multi-stage push rods are fixedly installed at the tops of the fixing seats and located on the two sides of the shear fork hydraulic elevator, and the anti-falling mechanisms for preventing the working table from falling suddenly are arranged on the multi-stage push rods. Through the combination of the rotary encoder and the double-shaft motor, when abnormal falling of the workbench is detected, quick response can be made, the winding drum is controlled to rotate reversely to tension the steel cable, and the workbench is prevented from continuously falling, so that the situation that the workbench falls suddenly is effectively prevented, and the safety of workers and goods is ensured.

The invention belongs to the technical field of coal mine drilling robot control, and particularly relates to a full-autonomous drilling control system and method for a coal mine drilling robot, and the system comprises the coal mine drilling robot, a drilling load sensing module, a drilling process controller, and a drilling system installed on the coal mine drilling robot. The drilling system comprises a drill rod rotation module, a drill rod feeding module and a drill rod clamping module; the drill rod rotation module comprises a hydraulic motor and a speed reducer, and the hydraulic motor is responsible for lifting power and controlling the drilling speed; the drill rod feeding module comprises a hydraulic cylinder and a guide rail. The drill rod clamping module comprises a front vice and a rear vice. The drilling load sensing module comprises a drilling pressure sensor, a rotary encoder, a drilling displacement sensor and a drilling load solver, the drilling load solver classifies and defines drilling loads based on a support vector machine, and then drilling load sensing under different coal rock conditions is achieved.

The invention discloses a photovoltaic panel automatic installation method, device and equipment and a storage medium. Comprising the following steps: after a sucking disc sucks a target photovoltaic panel, controlling a working device to rotate by a specified angle through a rotary encoder so as to enable the working device to reach an installation preparation position; compensation and correction are performed through the movable arm inertia measurement unit and the bucket rod inertia measurement unit, so that the working device is close to the mounting position; and according to the obtained confirmation instruction, the sucker is controlled to loosen the adsorption of the target photovoltaic panel so as to complete the installation of the photovoltaic panel. The working device is controlled to rotate to the installation preparation position through the rotary encoder, and the installation efficiency and precision are improved. Compensation and correction are carried out through the inertia measurement units of the movable arm and the bucket rod, the complex installation environment can be effectively dealt with, the working device can be accurately close to the installation position, the installation adaptability is enhanced, the installation quality of the photovoltaic panel is guaranteed, and the later maintenance cost is reduced. The sucker is loosened according to the confirmation instruction to complete installation, installation accuracy can be ensured, operation safety is improved, and safety accident risks are reduced.

The present invention relates to a liquid silicone injection molding machine, comprising a frame, a mold clamping module disposed on the top of the frame, a glue injection module mounted on the mold clamping module, and a controller for controlling the mold clamping module to perform mold clamping and glue injection. The mold clamping module comprises a mold clamping assembly, a mold clamping drive assembly for driving the mold clamping assembly to perform mold clamping, an electronic mold opening and closing scale disposed on the mold clamping assembly and connected to the controller, a positioning assembly for positioning the mold clamping assembly, and a mold ejection mechanism for ejecting the product produced by the mold clamping assembly. The glue injection module comprises a glue injection drive assembly for driving a gun barrel to perform glue injection via a mixing assembly, an electronic glue injection scale, a pressure sensor, and a rotary encoder disposed on the glue injection drive assembly and electrically connected to the controller. The controller is mounted on the frame via a mounting cantilever. The liquid silicone injection molding machine provided by the present invention can enhance user satisfaction with the glue injection experience by improving glue injection accuracy, while also improving glue injection efficiency and product quality.

The invention relates to a wheel rail adhesion-creep sliding behavior and steel rail corrugation comprehensive measurement device and method. The wheel rail adhesion-creep sliding behavior and steel rail corrugation comprehensive measuring device comprises a left fixing frame, a right fixing frame, a linear driving motor, a lead screw transmission assembly, a lead screw sliding block, a mounting plate, a vertical loading platform, a configuration block, a rotary driving motor, a measuring wheel, a first rotary encoder, a torque sensor, a second rotary encoder and a laser displacement sensor. The creep rate can be calculated according to the moving speed of the vertical loading platform and the rotating linear speed of the measuring wheel, the adhesion coefficient can be calculated according to the pressure loaded to the steel rail and the torque generated when the measuring wheel rotates, and steel rail wavy abrasion (steel rail corrugation) data can be measured through the laser displacement sensor. The method has the beneficial effects that the corrugation data of the steel rail can be obtained while the adhesion-creep sliding curve of the wheel rail is detected, so that the collaborative analysis of the relation between the adhesion-creep sliding curve and the corrugation state of the steel rail is realized.

The invention belongs to the technical field of quasi-zero stiffness vibration isolators, and particularly discloses a self-adaptive adjustment quasi-zero stiffness vibration isolator and a control method. Comprising a base and a bearing plate, and a plurality of positive stiffness units are arranged between the base and the bearing plate to provide basic support; the negative stiffness unit is arranged below the bearing plate, the two ends of the negative stiffness unit are connected with the adjusting structure through the moving unit capable of moving in the length direction of the driving unit, the adjusting structure is composed of a lead screw and an adjusting motor, the projection length of the negative stiffness unit in the horizontal direction can be changed, and therefore continuous adjustment of the negative stiffness is achieved. The vibration isolator is further provided with an acceleration sensor, a relative displacement sensor and a rotary encoder, and the sensors are connected with a processing unit to form a real-time monitoring and feedback control system. The low-frequency vibration isolation device can keep stable low-frequency vibration isolation performance under the condition change, and is suitable for high-precision equipment and complex industrial vibration environments.

The invention discloses a rotary assembled RGV which comprises a frame, a walking driving system, a power supply system, a control system and a rotary supporting platform. The rotary supporting platform is provided with an electromagnetic adsorption supporting block, a slewing bearing, a driving motor and a rotary encoder, 360-degree rotation and accurate positioning of the frame can be achieved, and the frame is fixed through electromagnetic adsorption force. The walking driving system is provided with a mechanical clutch mechanism, and manual pushing emergency movement is supported. And the power supply system adopts non-contact power supply, so that the flexibility and safety are improved. The safety protection system comprises a laser radar and an electronic safety contact edge, and the protection range can be automatically adjusted according to the workpiece size. The addressing positioning system is combined with RFID, a rotary encoder and a magnetic induction switch, and the positioning precision reaches + / -2mm. The control system supports three modes of single-machine remote control, automatic operation and system linkage. The problems that a traditional RGV is difficult in posture adjustment, low in positioning precision and poor in collaboration are solved, the assembling flexibility, efficiency and safety are improved, and the method is suitable for an engineering machinery general assembly line.

The invention discloses a control method and system of a hydraulic mechanical arm, electronic equipment and a medium, and belongs to the technical field of mechanical arm control technologies. The control method comprises the steps that the rotary encoder is used for detecting the rotary angle of the rotary platform; the lifting angle of the movable arm is detected through the movable arm angle sensor; the telescopic length of the telescopic arm body is detected through a telescopic arm length sensor; detecting the angle of the bucket rod by using the bucket rod angle sensor; and if a control instruction is received, current pose information is generated according to the rotation angle, the movable arm lifting angle, the telescopic length and the bucket rod angle, and control operation corresponding to the control instruction is conducted on a target valve set according to the current pose information. The hydraulic mechanical arm can achieve high-precision automatic control.

An image forming apparatus includes a transfer portion, a fixing portion, a detection unit configured to detect a bending amount of the sheet nipped between the transfer portion and the fixing portion, and a control unit. The detection unit includes a rotation portion configured to rotate in a rotation direction from a standby position by being pressed by the sheet nipped by the transfer portion and the fixing portion, a rotary encoder configured to output a pulse signal corresponding to a rotation amount of the rotation portion, and a rotation detector configured to detect that the rotation portion has reached a detection position downstream of the standby position in the rotation direction. The control unit controls a sheet conveyance speed of the fixing portion based on the pulse signal output from the rotary encoder after the rotation detector detects that the rotation portion has reached the detection position.

The invention designs a two-dimensional ring plug gauge thread measuring machine based on a rotary encoder and a thread measuring method, and belongs to the field of precision measurement. The device is composed of a base, an X-axis displacement structure, a Z-axis displacement structure, a ring plug gauge clamp device and a micrometer structure, a rotary encoder is fixed to the rotation center of a probe lever structure, and displacement is fed back in real time in combination with an X / Z-axis grating ruler. The computer integrally controls the motor rotor, the X / Y / Z axis movement and the rotary encoder through the single-chip microcomputer to construct a closed-loop system. The innovation lies in that the lever structure is optimized, appropriate measuring force is provided for different types of ring plug gauge threads, a Y-axis displacement structure is introduced, rapid positioning of a thread inflection point is achieved, accurate measurement of a rotary encoder is achieved, and the accuracy is further improved by error compensation of a computer host. According to the method, the thread to be measured cannot be damaged, manual crutch searching is not needed, measurement of the contact type rotary encoder is more accurate, the accuracy is further improved through error compensation, and an efficient solution is provided for automatic measurement of the thread of the ring plug gauge.

The intelligent monitoring system comprises a sensor assembly, a terminal controller and a man-machine interaction device, the sensor assembly comprises an infrared thermal imaging sensor, a microswitch sensor and a rotary encoder, the infrared thermal imaging sensor is arranged on a truss of a machine room of the escalator, the microswitch sensor is arranged on the truss of the machine room of the escalator, and the rotary encoder is arranged on the terminal controller. The microswitch sensor is arranged on the brake, and the rotary encoder is arranged on the driving wheel. The terminal controller comprises a power supply module, an MCU board, an RS485 / TTL module and an optical coupler isolation module, the power supply module is connected with the MCU board, the RS485 / TTL module is connected with the MCU board, the optical coupler isolation module is connected with the MCU board, the man-machine interaction device comprises a display screen, and the display screen is arranged in a monitoring room; the escalator comprises the intelligent monitoring system and further comprises a footpath, a driving device and handrails. The escalator brake state monitoring device has the advantages that the state of the escalator brake can be accurately monitored, manual operation is not needed, and interference and damage risks to the brake are reduced.

The invention discloses an automatic vibration reduction falling type fruit harvesting platform and a control method. The harvesting platform comprises a movable chassis and a 4RRS rigid-flexible coupling parallel mechanism; the 4RRS rigid-flexible coupling parallel mechanism comprises a net stretching mechanical arm assembly and a flexible harvesting net; the net stretching mechanical arm assembly comprises a plurality of groups of harvesting mechanical arms and a driving unit; an end effector of each group of harvesting mechanical arms is connected with a flexible collecting net; each group of driving units comprises a brushless direct current motor, a driving plate, a rotary encoder and a current / voltage sensor; when fruits fall onto the flexible harvesting net from the high altitude, the impact force of the fruits can be locally stiffened through the flexible harvesting net and is transmitted to the harvesting mechanical arm; according to the control method of the falling type fruit harvesting platform with the automatic vibration reduction function, the 4RRS rigid-flexible coupling parallel mechanism is used in cooperation with fruit impact force identification and an automatic vibration reduction control algorithm, so that falling fruits can be stably, rapidly and nondestructively harvested, the harvesting success rate and the nondestructive rate are increased, and the labor intensity and the cost are reduced.

The utility model belongs to the technical field, and discloses a device for testing the static braking torque of a brake, which comprises a frame. A power supply device; the brake and the output shaft are coaxially connected with a main shaft, one end of the main shaft is provided with a photoelectric rotary encoder used for recording the rotation angle of the brake, the other end of the main shaft is connected with a torque rotating speed sensor, and the torque rotating speed sensor collects torque data of the main shaft and is connected with the output end of the brake. A torque evaluation unit is installed below the torque rotating speed sensor to detect the torque of the main shaft; the swing arm sleeves the periphery of the main shaft and vertically extends downwards; the linear driving part moves in the horizontal direction, and a tension sensor is installed at the free end of the linear driving part and connected with the swing arm; the tension sensor measures the tension applied by the linear driving part. A tension tester is added, a torque and rotating speed sensor is added at a brake end, and through comparison of data at the two ends, force and torque change conditions in a test process are comprehensively considered, and experiment accuracy is improved.

The invention belongs to the technical field of performance testing, and particularly relates to a Hall sensor rotating speed testing device with an adjustable interval. The ball screw motor and the rotary encoder are connected with the ball screw support, the ball screw support is used for fixing and supporting the screw, the nut is fixed on the screw, the rotary motion of the nut is converted into linear motion to drive the workbench to move, the limit switch is installed on the ball screw support, and the sensor connector is fixed on the workbench. The Hall sensor is fixed in the sensor connector, the control signal processing module is connected with the rotating shaft motor, the rotating shaft is installed above the rotating shaft motor, the magnetic steel A and the magnetic steel B are symmetrically installed on the rotating shaft and used for triggering the Hall sensor, and the limiting switch is connected with the control signal processing module for control. The performance of the Hall sensor is tested, so that the safety and the reliability of the nuclear power station are improved.

The utility model belongs to the technical field of sports equipment, and discloses a self-generating elliptical machine which comprises a base. A frame; the connecting pieces are rotationally arranged on the surfaces of the two opposite sides of the frame respectively; the pedal structures are respectively connected with the connecting pieces on the corresponding sides; the wheel body structure is connected with the pedal structure and rotates along with the movement of the pedal structure; the damping motor is connected with the base and applies resistance to the wheel body structure; the brushless generator is connected with the wheel body structure, and rotation kinetic energy of the wheel body structure is supplied to the brushless generator for power generation; the controller is electrically connected with the brushless generator; the controller is electrically connected with the damping motor; and the hollow rotary encoder is arranged on the control panel, is electrically connected with the controller and is used for transmitting the received signal to the controller. The wheel body structure rotates to enable the brushless generator to generate electricity, the brushless generator supplies electric energy to the controller and the hollow rotary encoder which are electrically connected with the brushless generator, and the controller achieves damping adjustment by receiving signals of the hollow rotary encoder.

The invention discloses a welding and cutting device and method for a plastic spiral supporting pipe for a cable accessory, and relates to the technical field of cable hose production. The welding and cutting-off device for the plastic spiral supporting pipe for the cable accessory comprises a welding assembly, the welding assembly enables the spiral supporting pipe to be formed in the axial direction and to rotate and move, and at least one set of rotary encoders are arranged on one side of the axial moving path of the spiral supporting pipe. Cutting discs with the same number as the rotary encoders are arranged on the axial moving path of the cutting disc spiral supporting pipe and staggered from the rotary encoders, and a cutter is arranged on one side of each cutting disc. In the continuous manufacturing and forming process of the spiral supporting pipe, the rotary encoder is attached to the spiral supporting pipe to generate passive rotation, the moving length of the spiral supporting pipe is metered, meanwhile, the cutting disc gets close to the spiral supporting pipe to prepare for cutting off the spiral supporting pipe, and then the cutting disc is controlled to synchronously move and rotate along with the spiral supporting pipe; and during synchronous movement, the cutter is automatically pushed out, and the spiral supporting pipe is cut off.

The utility model discloses a rail damage detection experiment system based on a vehicle-mounted acoustic emission technology, and belongs to the technical field of vehicle-mounted acoustic emission detection experiments. And the track load condition of the train passing through the track can be simulated. Comprising a steel rail base, an operation support and a rolling wheel set. The steel rail base provides necessary mechanical support for the whole system, the steel rail on the steel rail base can prefabricate various damages, richer experimental data are provided, the running support is matched with the steel rail base to guide the rolling wheels to roll on the steel rail, and the pressure between wheel rails is adjusted through an external hydraulic machine, so that the steel rail base can be used for prefabricating various damages. A wheel rail state during real train operation is simulated, a rolling wheel set rolls on a steel rail to generate an acoustic emission phenomenon, an acoustic emission signal acquired by an acoustic emission sensor is transmitted to an acoustic emission acquisition system through a conductive slip ring, a rolling state of a roller is recorded through a rotary encoder, and necessary priori knowledge is provided for a vehicle-mounted acoustic emission experiment. And stable and reliable experimental research of the vehicle-mounted acoustic emission technology in a laboratory environment is realized.

The invention discloses a method and a device for arranging a light spot rotary encoder, and particularly relates to a high-precision encoder which is used on an optical light spot image capturing device, is combined with a short-distance altimeter to form the high-precision encoder, can be mounted on a machine table rotating shaft of various machines, can detect various errors of the rotating shaft defined by ISO230-7, achieves angle positioning of the high-precision encoder, and is high in precision. In addition, existing grating arrangement is not needed, subsequent compensation processing in the prior art is also omitted, and the method is particularly suitable for being used in extremely precise measurement and positioning (such as semiconductor equipment and the like) technical engineering. The light spot rotary encoder device comprises a rotary platform with a rough plane, a light spot measuring head and a plurality of short-distance altimeters, and the light spot measuring head is enabled to rotate on the rotary platform, so that track positioning of a light spot is reserved, and angle encoding measurement is carried out.

The invention discloses an environment self-adaptive magnetorheological fluid magnetic suspension flywheel energy storage device, and relates to the field of flywheel energy storage devices, the environment self-adaptive magnetorheological fluid magnetic suspension flywheel energy storage device comprises an energy storage cabinet, the front surface of the energy storage cabinet is provided with a door plate through a hinge, the energy storage cabinet is provided with a side plate, the top of the energy storage cabinet is fixedly provided with a top plate, and the energy storage cabinet is internally provided with a magnetic suspension flywheel energy storage device. Heat dissipation fins are arranged on the magnetic suspension flywheel energy storage device, and a flywheel rotor is movably installed in the magnetic suspension flywheel energy storage device. According to the environment self-adaptive magnetorheological fluid magnetic suspension flywheel energy storage device, the rotation state of the flywheel rotor can be indirectly detected through the rotary encoder, and the rotation state comprises rotation speed and position information; by monitoring the rotating speed of the flywheel rotor in real time, the control system can accurately adjust input electric energy according to actual requirements, the flywheel can be controlled to be charged at the optimal rotating speed, and energy loss or storage efficiency reduction caused by too high or too low rotating speed is avoided.