3495 results about "Stepper motor" patented technology

The invention discloses a detection device and method for detecting the straightness and roundness of a powder metallurgy rod piece, and relates to the technical field of detection of the straightness and roundness of the powder metallurgy rod piece. A driving assembly used for driving a powder metallurgy rod piece to rotate, a supporting assembly used for supporting the powder metallurgy rod piece and a detection unit used for detecting the roundness of a round head of the powder metallurgy rod piece and the straightness of a long round rod are sequentially arranged on the table top of the workbench from left to right. The detection unit comprises a stepping motor fixedly arranged on the table top of the workbench and a rotary table fixedly arranged on an output shaft of the stepping motor, a microswitch is fixedly arranged at the bottom of each fixing rod, and an elastic piece of each microswitch is arranged downwards; a displacement sensor is fixedly arranged on the top surface of the floating plate, the movable rod is sleeved with a spring, and the upper end and the lower end of the spring are fixedly arranged on the floating plate and the long connecting plate respectively. The device has the beneficial effects that the working intensity of workers is greatly reduced, and the powder metallurgy rod piece detection efficiency is greatly improved.

The invention discloses a target tracking method fusing visual perception and motion control. The method comprises the following steps: improving a YOLOv8 model and pre-training the improved YOLOv8 model; s2, preprocessing an image acquired by a camera, inputting the preprocessed image into the YOLOv8 model trained in the step S1, and outputting a target bounding box and a target center pixel coordinate; target center pixel coordinates are transmitted to a development board of a pre-burning algorithm program through a serial port, the development board is designed according to a stepping motor mathematical model, sine acceleration and deceleration serve as the basis, PID control, sliding mode control and fuzzy control algorithms are fused, and code burning is generated after in-loop simulation optimization; and the development board drives a stepping motor to adjust the posture of the holder according to the target center pixel coordinate control instruction, so that the target stops moving after being kept in the view center. The problems that a traditional YOLOv8 model is large in target recognition error under the complex background, PID control is prone to oscillation under the nonlinear working condition, buffeting exists in sliding mode control, and response lags when fuzzy control is independently used are solved.

The patent of the present invention discloses an automatic classification and recycling device for kitchen waste, which specifically relates to the technical field of resource recycling. An automatic classification and recycling device for kitchen waste, including a recycling box, a stepper motor is provided on the recycling box, and a first rotating shaft is connected to the stepper motor; a holding plate is distributed on the first rotating shaft, and a first gravity sensor is provided on the first rotating shaft; a first fixed ring is provided in the recycling box, a threaded rod is provided in the first fixed ring, a clamping plate is connected to the threaded rod, and a second gravity sensor is also provided on the clamping plate; a first driven gear is provided on the threaded rod; a second rotating shaft and a partition plate are provided in the recycling box, a first motor is provided on the second rotating shaft, a blade is provided on the second rotating shaft, and a second motor is also provided on the recycling box, and a driving gear is provided on the second motor, and the driving gear is meshed with two first driven gears. The technical solution of the present invention solves the problem that the existing office building garbage cannot be classified and recycled, and can be used for the centralized recycling of kitchen waste.

The invention discloses an automatic focusing control method based on a displacement sensor, and relates to the technical field of motion control, and the method comprises the steps: collecting a distance signal of a detection target, and converting the distance signal into a physical distance value through a calibration coefficient; the motion control card performs difference operation on the physical distance value and the standard focusing distance to obtain a position deviation value, performs data smoothing processing by using a Kalman filtering algorithm, establishes a state prediction model by using latest N frames of cache data, generates position compensation data, converts the position compensation data into a pulse control quantity, and when the pulse control quantity exceeds a preset threshold value, outputs the position compensation data; generating a motor driving instruction according to a PID control algorithm; and controlling the stepping motor driver to drive the lens assembly to perform position compensation according to the motor driving instruction, so that a standard focusing distance is kept between the lens assembly and the detection target. According to the invention, the problems of response lag and poor anti-interference capability in a traditional automatic focusing system are solved, and the dynamic response characteristic and the control precision of the system are improved.

According to the step motor sensorless control method based on improved robust Kalman filtering, an HBM current state equation is established, and an extended Kalman state equation is established; establishing an inductance deviation model, and deducing a system covariance matrix with errors; parameter uncertainty robust control is introduced, an expansion factor is designed, and a system covariance matrix is reconstructed for limitation compensation; the method comprises the following steps: constructing chi-square test statistics through an innovation sequence, identifying a system gross error, designing a robust weight function based on a system residual vector, selecting whether to carry out variance correction or not according to an identification result, inhibiting the cumulative influence of a model mismatch error on state estimation, updating a state, and adjusting robust intensity. According to the method, parameter uncertainty robust control and an IREKF algorithm based on innovation detection are introduced to carry out dynamic compensation on a model mismatch error, REKF is improved through innovation detection, and the robust intensity is dynamically adjusted.

The invention discloses an auxiliary renal puncture device for the nephrology department, and belongs to the technical field of renal puncture, the auxiliary renal puncture device comprises a sickbed, a plurality of supporting legs are fixedly arranged at the bottom of the sickbed, fixing plates are fixedly arranged on the two sides of the sickbed, and second sliding blocks are slidably connected to one sides of the two fixing plates; the breathing frequency and amplitude of a patient are captured in real time through an infrared breathing monitoring module, and displacement data generated by breathing of the kidney are accurately obtained in combination with motion sensing modules such as a lead screw encoder and a driving gear angle encoder. The intelligent control system drives the first stepping motor and the second stepping motor to adjust the position of the portal frame based on six-dimensional force sensor data of the force sensing module, meanwhile, the angle of the puncture needle is adjusted in real time through feedback of a mechanical arm joint encoder, and dynamic compensation of kidney respiratory movement is achieved. According to the mechanism, the puncture deviation caused by breathing can be controlled within the range of + / -0.5 mm, the puncture positioning precision is remarkably improved, and poor sample quality or operation risks caused by breathing movement are avoided.

The present invention relates to the field of fault detection technology, and specifically discloses a stepper motor fault detection method and system based on noise, the method comprising obtaining the working state of the stepper motor, obtaining the audio information of the stepper motor under different working states based on the noise detection point, creating a running audio model as an audio feature; counting the working state and the audio feature, creating a mapping relationship from the audio feature to the working state; in the actual application stage, obtaining the working period, obtaining the actual audio information based on the noise detection point, determining the audio feature according to the actual audio information and the working period, and obtaining the working parameters based on the mapping relationship as the prediction result. The present invention installs an audio detector at the noise detection point, and the audio detector obtains the working audio of the stepper motor, and then compares it with the preset conditions to determine in real time whether there is a fault; in this process, the preset conditions can be adjusted by the user, thereby improving the accuracy.

Relates to an electric control valve for semiconductor gluing equipment and an assembling method of the electric control valve. The electric control valve comprises a pre-assembled inner box which is arranged in the dustproof shell and is provided with a driving assembly and an elastic pre-tightening module in a pre-assembled mode, a sealing membrane which is provided with a semi-circular-ring-shaped arc-shaped thin film part and an inverted-cone-shaped sealing boss and is used for sealing a longitudinal valve port, and a valve seat which is arranged at the lower end of the longitudinal valve port, connected with an inlet flow channel and provided with an inner arc spherical surface. According to the electric adjusting valve, the adjusting lead screw is driven by the stepping motor to rotate so as to achieve accurate lifting motion of the diaphragm connecting shaft, the elastic pre-tightening module provides stable pre-tightening force for the diaphragm connecting shaft, and the cooling space in the dustproof shell effectively reduces the operating temperature of the stepping motor; high-precision fluid control can be achieved, and meanwhile good sealing performance and long-time use durability are achieved. The problems that in the prior art, sealing leakage occurs, a flow channel is polluted, a membrane is prone to being damaged, and environmental adaptability is poor are solved, high-precision, long-service-life and zero-pollution flow control is achieved, and the technical effect of being applied to semiconductor gluing equipment is achieved.

The utility model discloses a single-channel fresh apricot directional pitting device (short for directional pitting device), which belongs to the field of pitting equipment and comprises a frame, a conveying mechanism, a pitting mechanism, a directional mechanism and an automatic directional control system. Wherein the orientation mechanism comprises a camera, a lifting mechanism, a control development board, an orientation hood and an execution device; the conveying mechanism conveys fresh apricots to the orientation mechanism, the camera shoots the fresh apricots in the tray, the relative position coordinates of the fruit and fruit calyx detection frame are detected through a fruit and fruit calyx detection model in the automatic orientation control system deployed on the development board, and then the corresponding single-fruit fresh apricot posture is calculated. The stepping motor is used for calculating the rotation step number based on the single-fruit posture of the fresh apricots and outputting an electric signal to the execution device, the stepping motor is connected with a position correction wheel through a rotating shaft, and the position correction wheel drives the fresh apricots to rotate by a corresponding angle in the tray so as to achieve single-fruit posture adjustment of the fresh apricots and unified upward arrangement of fruit calyx; and the conveying mechanism conveys the fresh apricots from the orientation mechanism to the pitting mechanism, and the cutting and pitting of the fresh apricots are realized through the pitting mechanism.

The invention discloses high-efficiency motor iron core laminating equipment which comprises a base, a support fixedly mounted at the top of the base, a top plate fixedly mounted at the top of the support, an air cylinder mounted at the top of the top plate, a punch structure mounted on an output shaft of the air cylinder, and a stepping motor mounted in the center of the inner wall of the base. A rotating shaft is mounted on an output shaft of the stepping motor, and the rotating shaft and the base are rotationally mounted through a bearing; and the stamping disc is rotationally installed at the top of the base, a groove is formed in the bottom of the stamping disc, and the inner wall of the groove and the top of the rotating shaft are fixedly installed. According to the device, through three core technologies of electromagnetic-mechanical composite driving, a multi-stage buffer structure and precise rotation positioning, the positioning repetition precision, the controllable damping characteristic of the magnetorheological fluid damper and closed-loop control formed by a pressure sensing feedback system, the lamination quality consistency is remarkably improved, electromagnetic limiting and electromagnetic stripping of a motor iron core are facilitated, and the production efficiency is improved. The use effect is good and the efficiency is high.

The invention relates to the technical field of pressure control, in particular to a butterfly valve pressure self-adaptive adjusting method, device and equipment and a storage medium. According to the method, a pre-constructed neural network model is introduced, and user set pressure, actual measurement pressure, current control signals and error parameters serve as input variables; dynamic generation and real-time self-adaptive adjustment of PID control parameters are realized, the technical bottlenecks that parameter setting of a traditional PID controller is complex and adaptability to non-linear and time-varying systems is insufficient are effectively solved, and the parameter adjustment period is shortened; the weight parameter of the neural network is continuously optimized through a back propagation algorithm, so that the inhibition capability of the system on external disturbance is remarkably enhanced, the overshoot is reduced, and the long-term stability and control precision of pressure control are improved; the target step number is calculated in combination with butterfly valve hardware parameters, the accuracy and rapidity of stepping motor driving are ensured, and the problem of response delay of traditional PID control is effectively solved.

The invention belongs to the field of accurate control equipment, and particularly relates to a medium borosilicate medicinal glass tube size accurate control device which comprises a base, a vertical plate is fixedly mounted at the top of the base, a transverse plate is fixedly mounted at the top of the vertical plate, a guide sleeve is fixedly mounted at the bottom of the transverse plate, and a supporting frame is fixedly mounted at the top of the base. The top of the supporting frame is rotatably provided with a rotating disc, the top of the rotating disc is fixedly provided with a plurality of supporting sleeves, the tops of the supporting sleeves are fixedly provided with the same placing disc, the top of the base is fixedly provided with a stepping motor, and an output shaft of the stepping motor is fixedly connected with the rotating disc. The device is reasonable in design, the size of a glass tube is accurately detected through the inner diameter and outer diameter detection mechanism, automatic operation is achieved through a stepping motor and a driving motor, stable detection is ensured through the pressing mechanism, an alarm gives an early warning when the glass tube is unqualified, the detection precision, the automation degree and the production efficiency are comprehensively improved, and the problems that existing equipment is low in precision and poor in automation degree are solved.

An emergency lamp having an adjustable lighting range, comprising a cone (1). An adjustment mechanism (2) is arranged at the top of the cone (1). A lifting / lowering mechanism (3) is arranged at the bottom of the cone (1). Auxiliary mechanisms (4) are arranged on the periphery of the lifting / lowering mechanism (3). Mounting mechanisms (5) are arranged on the periphery of the adjustment mechanism (2). An outer gear (207) drives an inner gear (204) to rotate, a sleeve ring pipe (203) drives the whole device to rotate, and a motor (209) is mated to drive a first threaded rod (214) to rotate, so that a rack (211) drives a spherical connector (212) to rotate, and thus the whole device is adjusted at multiple angles for facilitating irradiation of a specified position; a stepper motor (306) drives a second threaded rod (307) to rotate, so that a cross (308) moves up and down on the second threaded rod (307), and the cross (308) is mated to drive a shielding ring (304) to move up and down, and thus the height of a lamp bead (311) is adjusted relative to the shielding ring (304); and the irradiation range of the lamp bead (311) is adjusted and controlled by means of the shielding and limiting of a conical ring (310), thereby facilitating lighting adjustment.

The invention relates to the technical field of curtain wall installation, and discloses a safety protection device for building curtain wall engineering installation, which comprises a base assembly horizontally placed on a working plane; the telescopic assembly is installed on the base assembly, the tail end of the telescopic assembly is connected with the overturning assembly, the tail end of the overturning assembly is connected with a suction cup support, the suction cup support is provided with a plurality of pneumatic suction cups, the pneumatic suction cups are adsorbed to the outer wall of one side of curtain wall glass, and the telescopic assembly comprises a stepping motor, a sliding seat, a supporting seat and an overturning connecting frame; the overturning connecting frame is installed at the tail end of the sliding base, and the sliding base is connected into the supporting base in a sliding mode. According to the glass curtain wall, the glass curtain wall is integrated on the glass mounting bracket, and the scalable connecting frame body is used for achieving multiple effects of coating, abutting extrusion and edge protection, so that curtain wall materials are prevented from being damaged in the transportation and mounting processes, the risk of workers during construction is reduced, and the construction quality and safety are improved.

This application provides a cutting control method, apparatus, wire marking machine, and computer storage medium for a wire marking machine. The method includes: when the origin is located at the sensor's position, if a trigger command for a cutting action is detected, controlling a stepper motor to rotate, causing the stepper motor to drive a code disk to rotate in the target rotation direction via a transmission mechanism, and causing the stepper motor to drive a cutter via the transmission mechanism; when the sensor is detected entering the target code disk area where the cutting point corresponding to the cutting action is located, determining the number of steps to be taken based on the target rotation direction corresponding to the cutting action; controlling the stepper motor to rotate based on the number of steps to be taken, causing the cutting point corresponding to the cutting action to rotate to the sensor's position; and ending the cutting action when the cutting point corresponding to the cutting action has rotated to the sensor's position. The embodiments provided by this solution can improve the cutting accuracy of the wire marking machine, thereby improving the machine's operating efficiency.

The present application provides a detection control system for the cutting position of a large product to be cut. The detection control system for the cutting position of a large product to be cut comprises: horizontal pan / tilt heads; an image acquisition module comprising industrial cameras, light sources and supports, wherein the supports are arranged on the horizontal pan / tilt heads, both the industrial cameras and the light sources are movably connected to the supports, and the supports include arc-shaped supports; a side guide driving module comprising a side guide, a stepper motor and a position sensor, wherein the stepper motor being used for adjusting the side guide, and the position sensor is used for feeding back the size of the side guide adjusted by the stepper motor; and an information processing module used for acquiring an image acquired by an image acquisition module, obtaining a deviation value between a cutting line of the image and a template on the basis of the image, and controlling, on the basis of the deviation value, the stepper motor to adjust the side guide. According to the present application, the deviation size of the side gauge can be more accurately and directly measured, improving the cutting quality of products, and reducing manual involvement.

The invention discloses a chip angle correction and film expansion device which comprises a supporting seat, a ring clamp, a ring expansion base, a film expansion fixing seat, a film expansion driving mechanism and an angle correction mechanism, and the angle correction mechanism comprises a bearing supporting assembly and a calibration assembly which are arranged on the supporting seat. The calibration assembly comprises a stepping motor, a lead screw module, a calibration lead screw base and a calibration shaft sliding table, the stepping motor is used for driving a lead screw of the lead screw module to rotate, the calibration shaft sliding table is fixedly connected with a nut of the lead screw module, the calibration shaft sliding table is connected to the calibration lead screw base in a sliding mode, and the calibration shaft sliding table is connected to the calibration lead screw base in a sliding mode. The calibration shaft sliding table is provided with a U-shaped sliding groove, the ring expanding base is provided with a cam follower, and the cam follower is connected into the U-shaped sliding groove. When the calibration shaft sliding table moves, the cam follower moves in the U-shaped sliding groove and is used for driving the ring expanding base to rotate. According to the chip angle correction film expanding device, the angle of the chip can be rapidly corrected, and the correction precision is high.

The patent of the present invention discloses a special on-load voltage regulating switch for distribution transformer and an on-load voltage regulating distribution transformer. The switch includes a mounting main board, an insulating back plate, a driving mechanism component, a selection switch component, a switching switch component, and a transition element. The driving mechanism component includes a stepping motor, a gearbox, a bevel gear, a driving gear, and a square shaft. The rotational motion of the stepping motor is transmitted to the driving gear by means of the gearbox and the bevel gear. The driving gear drives the square shaft to rotate, and then drives the selection switch component and the switching switch component to move, completing the conversion of the voltage regulating gear. The on-load voltage regulating switch is miniaturized, and is installed in the distribution transformer without changing its conventional shape and volume. Frequent voltage adjustment of the distribution transformer under load is realized, the power supply voltage is stabilized, the loss is reduced, and a wide range of multi-gears and refined voltage regulation are realized. At the same time, the life cycle of the switch is equal to the life cycle of the distribution transformer body, and no maintenance is required during its life cycle, which improves the reliability of the on-load voltage regulation of the distribution transformer.

The invention discloses a textile test color matching instrument, and relates to the technical field of textile, the textile test color matching instrument comprises a shell, a switching assembly is arranged in the shell close to the rear surface, an adjusting assembly is arranged in the shell, and a linkage assembly is arranged on the outer surface of one side of the shell; according to the color matching instrument for textile testing, in the process of detecting textiles through the color matching instrument, a stepping motor is started, a driving shaft is driven to rotate, meanwhile, an electromagnet is disconnected from an external power source, the driving shaft drives a plurality of illuminating lamps to rotate to the position which is concentric with a light hole, and the colors of the textiles are detected; the electromagnet is disconnected with an external power supply, the driven gear is driven to rotate, then the rotating shaft is driven to rotate, the prism body is adjusted to a required angle, the prism body is indirectly driven to rotate by using the stepping motor, and the two independent power sources are combined into one power source.

The invention discloses a mobile phone FPC assembling machine, and relates to the technical field of 3C product assembling. The mobile phone FPC assembling machine comprises an FPC assembling machine body, a feeding and discharging single-double-rail switching module, an FPC bending module, a film tearing module, an FPC turn-over module, a side camera module, a gantry XY module and a reinspection row NG module are arranged in the FPC assembling machine body, and the feeding and discharging single-double-rail switching module comprises a first mounting frame; a first synchronous belt module, a long-edge feeding rail, a first stepping motor, a jacking rotating mechanism and a round belt conveying line are arranged on the outer surface of the first mounting frame, the FPC bending module comprises a second stepping motor, a third stepping motor, a material taking air cylinder and a second synchronous belt module, and a suction nozzle is arranged on the outer surface of the material taking air cylinder; the side camera and prism photographing technology is adopted, the problems that a single-head FPC is difficult to photograph and the FPC is too large in bending degree in the photographing process are solved, the working mode that double tracks work alternately is adopted, and the working capacity of the whole equipment is improved.

Systems and methods for adjusting resistance on an exercise apparatus include a first resistance apparatus having an adjusting bracket, magnetic members mounted on an inner surface of the adjusting bracket, a stepper motor having an adjusting shaft and operable to traverse a portion of the length of the adjusting shaft. At a first position, the magnetic members are disposed above a flywheel, and in a second position, the magnetic members are disposed on opposite sides of the flywheel, providing resistance thereto. A load cell couples the adjusting bracket to the frame and generates a signal corresponding to the movement of the adjusting bracket. A computing system calculates resistance, rpms, power from load cell signal, stepper motor position, shaft rotational position and other sensor inputs.

The invention belongs to the field of optical parametric oscillators, and particularly discloses a cavity length control device and method for a femtosecond pulse synchronous pump optical parametric oscillator, and a temperature control element is arranged on a metal bottom plate and used for adjusting the temperature of the metal bottom plate; and the temperature controller is electrically connected with the temperature control element and is used for adjusting the temperature of the temperature control element according to the characteristic parameters of the light output by the optical parametric oscillator so as to adjust the temperature of the metal bottom plate to adjust the cavity length of the optical parametric oscillator. The temperature of the temperature control element is accurately adjusted through the temperature controller, fine control over the temperature of the metal bottom plate is achieved, then fine control over the length of the metal bottom plate is achieved, small changes of the length of the metal bottom plate can be directly reflected to changes of the cavity length, and therefore high-precision adjustment of the cavity length is achieved; and compared with expensive devices such as piezoelectric ceramics and precise stepping motors, the manufacturing cost and the maintenance difficulty are reduced, and meanwhile, the overall performance and stability of the system are improved.

The invention relates to the technical field of road greening construction, and particularly discloses road greening construction equipment which comprises a direction adjusting mechanism, the direction adjusting mechanism is arranged at the top of a moving vehicle, and the direction adjusting mechanism is used for function change adjustment. A pit digging structure and a planting structure can be selected to rotate, adjust and select according to use requirements in the work of road greening construction, and a stepping motor is arranged in a direction adjusting mechanism, so that the stepping motor can perform reciprocating fixed-angle rotation, selection and adjustment; by arranging the second lifting mechanism, the saplings can be fixed and clamped according to the approximate depth of deep burying, and then the clamped saplings can be subjected to lifting measurement work.

The invention discloses an integrated reconstruction multi-foot closed chain platform. The platform comprises a right rear leg mechanism (A), a right front leg mechanism (B), a left front leg mechanism (C), a left rear leg mechanism (D) and a trunk (E), each leg group mechanism is driven by a stepping motor; four electric push rods are arranged on the trunk and are rotationally connected with the trunk, so that the pitching posture of the trunk can be realized, and meanwhile, each electric push rod can drive the leg group to reconstruct and deform through a telescopic push rod; the reconstruction deformation of the leg group has two modes, and the closed chain legs can realize supporting and climbing in different modes; multiple reconstruction strategies of the front leg and the rear leg of a single four-foot unit are coupled under single power, reconstruction of the front leg comprises changes of the angle and the length at the same time, high obstacle crossing capacity is achieved, reconstruction of the rear leg conducts angle compensation for deflection of the horizontal angle of the platform, and rapid and efficient walking in the climbing obstacle crossing process is achieved.

The utility model discloses a novel high-efficiency self-priming pump which is not afraid of gas and can intermittently draw suction, belongs to the technical field of self-priming pumps, comprises a pump body, a liquid outlet pipe is arranged at the top of the pump body, a stepper motor is fixedly installed at the bottom of the pump body, the output shaft of the stepper motor is fixedly connected with a rotating rod, the outer surface of the rotating rod is rotatably connected to the outer side wall of the pump body through a rotating shaft, the other end of the rotating rod passes through the pump body and is fixedly connected with an impeller, a liquid inlet pipe is arranged on the side of the pump body away from the stepper motor, a one-way valve is installed on the outer surface of the liquid inlet pipe, a cover plate is arranged at the top of the pump body, a liquid adding assembly and a gas-liquid balance assembly are arranged on the upper surface of the cover plate, a liquid storage chamber, a gas-liquid separation chamber and a high-pressure chamber are respectively opened inside the pump body, thereby improving the stability of the self-priming pump during operation, realizing intermittent suction and being able to work continuously without secondary emptying after inhaling air, thereby improving the working efficiency of the self-priming pump.

The invention discloses an intelligent feeding device based on fish behavior analysis, which comprises feeding equipment, camera shooting equipment, communication equipment and a computer, the feeding equipment comprises a feeding device, a sliding device and a control device, and the feeding device comprises a large storage bin, a plurality of small storage bins and a scattering bin; feed ports are respectively formed between the large storage bin and the small storage bins, between the small storage bins and the scattering bin and between the small storage bins, and the large storage bin, the small storage bins and the scattering bin are separated through partition plates; the sliding device comprises a first sliding rail, a second sliding rail, a first screw rod, a second screw rod, a transmission sleeve, a fixing frame, a sliding block and a transmission shaft, the first screw rod penetrates through the sliding block below the fixing frame, the second screw rod penetrates through the sliding block below the first sliding rail, and the transmission shaft is connected with the sliding block below the first sliding rail; the control device comprises a PLC, a stepping motor and a transmission belt, and the stepping motor is used for receiving a control instruction of the PLC and controlling the transmission belt and the transmission sleeve to drive the feeding device to move.

The invention relates to a three-dimensional point cloud reconstruction method and device using a single-line laser radar and an inertial measurement unit (IMU). According to the method, a stepping motor drives a single-line laser radar to periodically pitch and swing, and the scanning dimension of the single-line laser radar is expanded to a three-dimensional space; the method comprises the following steps: synchronously acquiring point cloud data and IMU (Inertial Measurement Unit) data of a laser radar, performing intra-frame motion distortion compensation on each frame of point cloud data by using the IMU data, and eliminating distortion generated by carrier motion; projecting the compensated three-dimensional point cloud data to a two-dimensional aerial view (BEV) plane to generate a two-dimensional point set, optimizing and solving inter-frame two-dimensional rigid body transformation by adopting an iterative closest point (ICP) algorithm based on the BEV point set of adjacent frames, then lifting the inter-frame two-dimensional rigid body transformation into three-dimensional transformation, and updating the global three-dimensional pose of a carrier; according to the method, low-cost and high-precision three-dimensional point cloud reconstruction is realized, the hardware cost is reduced, the operation efficiency is improved, and the method is suitable for various devices such as a mobile robot, a sweeper and a simple scanner.

The utility model relates to the technical field of vibrating screens, in particular to a polyester staple fiber vibrating screen convenient to clean, which comprises a connecting box, and the bottom of the connecting box is fixedly connected with a vibrating motor. Polyester staple fiber raw materials are added into the connecting box through the feeding pipe, large-particle raw materials slide through the screen and fall into the collecting box, small-particle raw materials penetrate through the meshes and fall into the collecting box, the servo motor is started to continuously work, and the eccentric wheel can drive the ball to circularly move up and down; the inclined rod drives the multiple cleaning needle columns to circularly move up and down to clean the blocked mesh holes, the stepping motor is started to drive the inclined rod to move through rotation of the screw rod, at the moment, the mesh holes in the next row can be cleaned, and when the screen is used for a long time, polyester staple fiber raw materials can be contained in the mesh holes. And polyester staple fiber raw materials in the meshes can be conveniently cleaned, the screening efficiency is improved, the screen does not need to be manually taken out for cleaning, and a large amount of manpower and time are saved.

The invention relates to the technical field of CNC machining centers, in particular to a CNC machining center special-shaped workpiece auxiliary machining device which comprises a mounting table, a mounting plate and the like, and the top of the mounting table is connected with the mounting plate. The output shaft of the screw rod motor can drive the screw rod to rotate so as to drive the two fractal vices to move towards each other, the fractal vices can clamp a workpiece, the fractal structure can distribute more supporting points on the whole clamping surface, the clamping stability and reliability are improved, and the clamping efficiency is improved. The fractal vice can be driven by an output shaft of the stepping motor to rotate so as to drive the workpiece to rotate and turn over the workpiece, the rack can be driven by an output shaft of the lead screw motor to move leftwards, and the rack can drive the gear to rotate so as to drive the workpiece to rotate; and the workpiece is automatically rotated and turned over, the labor cost is reduced, the production efficiency is improved, and the machining precision is ensured.

The invention relates to the technical field of motion control, in particular to a stepping motor monitoring control method and system, and the method comprises the following steps: obtaining a target and feedback signal rising edge sequence, analyzing a periodic change direction, judging a time migration trend, extracting a voltage and current response section, recognizing a disturbance time slice, and positioning high and low level boundaries. And screening signals with consistent frequency, extracting a running rhythm time sequence, and comparing a rhythm sequence to obtain a monitoring control behavior. According to the method, the time sequence of rising edges of a target and a feedback signal is compared, the displacement deviation trend is judged in combination with the periodic change direction, an interference section is identified by utilizing voltage abrupt change and current fluctuation characteristics, a control boundary is delimited according to the distribution of the interference section in high and low levels, and signal segments with consistent frequency characteristics are extracted to construct an operation rhythm. The driving behavior is extracted in combination with the signal time sequence and the rhythm sequence, the responsiveness to rhythm change is enhanced, and the problems of interference fluctuation and control rhythm disjunction caused by rhythm dislocation are relieved.