8349 results about "Motor drive" patented technology

An electric power assisted steering assembly comprises a steering mechanism which operatively connects a steering wheel to the roadwheels of a vehicle, a torque sensing means adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism, a means for producing a second output signal indicative from a signal indicative of the angular velocity of the portion of the steering mechanism, an electric motor operatively connected to the steering mechanism, a signal processing unit adapted to receive the two output signals and to produce therefrom an overall torque demand signal representative of a torque to be applied to the steering mechanism by the motor, and a motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal. The overall torque demand signal includes a damping component that is dependent upon the second output signal. The means for producing the yaw damping component includes a filter having one pole and one zero, and in use the second signal is passed through the filter to produce the damping component, the frequency of the pole and zero being selected such that the filter provides a band between the pole and zero within which the phase of the filtered second signal and the velocity signal are further out of phase or in phase than within the band.

The invention relates to a remote-control system of a stratospheric airship and a control method thereof. The control system is divided to four levels: a decision-making level for executing the selection and switch of a remote-control flight mode according to the actual working state data, and sending a corresponding mode command; a planning level for dynamically planning and generating an airship motor drive command according to the mode command sent by the decision-making level; an executing level for realizing the drive control to an airship motor according to the motor drive command of the planning level; and a perceiving level for finishing the real-time monitoring and data collection of the airship working state, and providing the original data of the airship working state to the decision-making level. The four-level control system architecture design of the control system is capable of simplifying the control device, improving the control efficiency, and fundamentally solving the problems of the function, efficiency and reliability of the near space airship ground and airborne control system.

The invention relates to a cutting path generation system based on visual positioning, cutting equipment and a cutting method. The system comprises a scanning camera control module, an image acquisition and recognition module, an image processing module, a cutting path planning module and a cutting control module. According to the system, by combining a Laplace algorithm and an LBP and GLCM texture extraction technology, the boundary recognition problem under the condition that a pattern and a background are in the same color or low contrast is solved; the path smoothness and the cutting quality are improved by adopting contour optimization and curvature compensation algorithms, the cutting sequence is optimized by combining weighting functions of the area, complexity and overlapping degree, and material deformation is reduced. And motor driving is dynamically adjusted through PID control, and stable control over the speed of the tool bit is achieved. The method has the advantages of being high in recognition precision, high in adaptability, intelligent in path planning and stable in cutting process, the automatic cutting efficiency and the finished product quality of complex patterns or same-color materials are remarkably improved, and the overall cutting precision fluctuation is controlled within + / -2%.

The invention relates to the field of driver protection, in particular to a motor driver protection device which is characterized by comprising a sensing module, a fault prediction module, a dynamic control module, an execution module, a central processing unit, a memory module and a power management module. According to the motor driver protection device, key operation parameters such as current, voltage, temperature and rotating speed are collected in real time through the sensing module, intelligent prediction is carried out in combination with the fault prediction module, the dynamic control module can adjust the operation state of a motor in real time, and it is ensured that a system can rapidly respond and take corresponding protection measures when faults occur. And the central processing unit coordinates communication and data processing among the modules, stores historical data through the memory module, provides data support for fault prediction, and enhances the stability of the system and the capability of coping with complex fault scenes.

The invention discloses a decoupling control method and system for a matrix motor with harmonic suppression capability, and belongs to the technical field of motor driving systems, and the method comprises the steps: building a matrix motor current loop mathematical model which considers a DC disturbance term and an AC disturbance term at the same time; based on the matrix motor current loop mathematical model, establishing a self-adaptive quasi-resonance extended state observer which simultaneously considers direct current disturbance observation and alternating current disturbance observation and performs self-adaptive adjustment on control parameters; the direct current and alternating current lumped disturbance of a matrix motor current loop is observed in real time through an adaptive quasi-resonance extended state observer; compensating the observed direct current and alternating current lumped disturbance in a forward controller of the current loop and obtaining a voltage control quantity; and controlling the matrix motor through a voltage vector space transformation and SVPWM modulation method according to the voltage control quantity. The method is improved and optimized based on an existing matrix motor vector control system, and the system does not need to be modified on a large scale.

The invention relates to the technical field of casting equipment, in particular to a casting device for pump valve casting production, which comprises a conveying rack, a mold frame mounted on the conveying rack, and a sand injection station, the sand injection station comprises a mounting frame, a sand discharging mechanism mounted on the mounting frame and a tamping mechanism for tamping molding sand. According to the casting device for pump valve casting production, by arranging the discharging mechanism, when a motor drives a discharging roller to discharge materials in a feeding hopper, a screening disc can be synchronously driven to move up and down, and discharged molding sand is screened; meanwhile, when the molding sand falls on the screen, the middle of the screen is raised, so that the molding sand is more uniformly distributed in the mold frame; and meanwhile, the materials in the mold frame are preliminarily hammered and tamped.

The invention discloses a detection device and method for laser film production. Comprising a middle rotating shaft, upper and lower detection turntables, a middle assembly and a driving motor, the detection turntable is provided with a plurality of groups of laser detection heads, and outgoing lines of the laser detection heads are connected to a peripheral annular conductive track through a channel in the transfer shaft; an elastic shifting piece at a power leading end in a cavity of the middle assembly is in contact with the annular conductive track to realize rotary power transmission; the motor drives the middle rotating shaft to drive the detection turntable to rotate, so that the laser detection head scans the thickness of a film in a detection area between the turntables along a circumferential track; the detection rotating discs are connected through columnar discs, motor operation airflow is collected through internal annular air paths of the detection rotating discs, blowing airflow which is symmetrically divided and covers the film breadth is formed through peripheral airflow outlets, a detection area is synchronously cleaned, and static electricity is restrained. According to the invention, high-efficiency, high-precision and multi-channel online thickness measurement is realized, a self-cleaning function is integrated, and the problems of contradiction between efficiency and precision, high cleaning sensitivity and difficult production line expansion in the prior art are solved.

The invention relates to the technical field of detection platforms, in particular to a detection platform based on machine vision, which comprises a detection platform, a support frame is arranged at the top of the detection platform, a clamping adjusting assembly is arranged on one side of the support frame, a lifting assembly is arranged at the bottom of the detection platform, and a position adjusting assembly is arranged at the top of the support frame. A second motor drives a two-way threaded lead screw to rotate through a corresponding structure, the two-way threaded lead screw drives two movable plates to move oppositely along a first sliding rod, and after the two movable plates move to a proper position, two clamping plates are driven by a clamping air cylinder to move oppositely to clamp a workpiece; a first lead screw drives a clamped workpiece to rise through a first sliding table, a third motor drives a first rotating shaft to rotate, the first rotating shaft rotates through a clamping air cylinder on a mounting plate, the clamping air cylinder drives the workpiece to turn over through a clamping plate, the workpiece does not need to be turned over manually, a large amount of manpower resources are reduced, a large amount of time is saved, and the work efficiency is improved. And the working efficiency is improved.

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.

The invention discloses insulation detection equipment for a dry-type air-core reactor, and belongs to the field of insulation detection of the dry-type air-core reactor. The equipment comprises an insulation detector body, a detection mechanism is arranged outside the insulation detector body, and a guide assembly is arranged inside the detection mechanism. According to the invention, through arrangement of the detection mechanism, sundries on the surface of the dry-type air-core reactor are detected before insulation detection is carried out on the dry-type air-core reactor through the insulation detector body, in the detection mechanism, in a normal state, an electric telescopic rod is transversely placed, and during insulation detection, a motor drives a screw rod to rotate, so that the dry-type air-core reactor can be detected. And then the motor drives the connecting plate, the electric telescopic rod and the camera to rotate, so that the dry-type air-core reactor can move in a small gap, and the practicability is high. Through the arranged guide assembly, the effect of improving the moving stability of the moving block is achieved, and when the lead screw rotates, the moving block is prevented from rotating along with the lead screw.

The invention relates to the technical field of automobile film roll dividing and edge cutting, in particular to a slitting device for improving color changing film slitting precision and flatness, which comprises a mounting seat, two supporting plates are arranged at the top of the mounting seat, an auxiliary mechanism, a conveying mechanism and a mounting strip are sequentially arranged between the two supporting plates, and a sliding groove is formed in the bottom side of the mounting strip. A transmission lead screw is rotationally arranged in the sliding groove, a sliding block is in threaded engagement with the transmission lead screw, a cutting knife is arranged on the top side of the sliding block through a reciprocating assembly, a receding strip hole communicating with the sliding groove is formed in the top side of the mounting strip, a servo motor is arranged on the side wall of the supporting plate, and an output shaft of the servo motor rotationally penetrates into the sliding groove. The servo motor drives the transmission lead screw to rotate to be meshed with the sliding block and drives the cutting knife to move horizontally, and under the cooperation of the reciprocating assembly, the cutting knife moves vertically in a reciprocating mode and is matched with the cutting force of the cutting knife to cut the color changing film.

The invention relates to the technical field of galvanized sheet laser thickness measurement, in particular to a galvanized sheet laser thickness measurement device and method, which comprises a base, an overhead frame is fixedly mounted on the upper side of the base, a detection table is fixedly mounted on the overhead frame, and a fixing assembly is fixedly mounted on the inner wall of the detection table. A first-stage moving opening is formed in one side of the detection table, a thickness measuring assembly is slidably installed in the first-stage moving opening, and stable sliding rods are fixedly installed on the upper side and the lower side of the detection table; the output end of a cleaning motor drives a secondary driving threaded rod to rotate, the secondary driving threaded rod drives a cleaning moving block to move, the cleaning moving block drives a corresponding cleaning box to horizontally move through two transmission rods, and two driving blocks drive a corresponding reciprocating frame to reciprocate. And the cleaning scraper performs high-frequency staggered scraping, so that an oxide layer on the surface of the galvanized sheet is cleaned, and the accuracy of thickness measurement data is improved.

The invention relates to appearance defect visual detection equipment which comprises a conveying assembly, a supporting frame is fixedly connected to the upper surface of the conveying assembly, a detection camera is fixedly connected to the inner top wall of the supporting frame, a mounting frame is fixedly connected to the upper surface of the conveying assembly, and a shell is arranged on the inner wall of the mounting frame; a cleaning brush assembly is arranged in the shell, and a dust removal part which is close to the cleaning brush assembly and carries static electricity is arranged in the shell. According to the dust removal device, the output end of the cleaning motor drives the driving roller to rotate, then the driving belt is driven to move under cooperation of the driven roller, then the bristles are driven to move, the dust removal part is arranged, dust in the bristles close to the dust removal part is adsorbed according to the electrostatic adsorption principle, and the dust in the bristles is removed through cooperation of the driving belt; during cleaning, part of the bristles contaminated with dust are moved to the upper portion so as to be attached to the dust removal part, and therefore the visual inspection equipment for the appearance defects has the effect of being high in cleaning efficiency.

The utility model relates to the technical field of machining, and particularly discloses a handheld servo electric screwdriver which comprises an electric screwdriver cap, a servo motor, an electric screwdriver handheld portion and an electric screwdriver chuck portion which are sequentially arranged from top to bottom, and the electric screwdriver cap is provided with an aviation plug, a start-stop photoelectric control panel, a start-stop switch and a forward and reverse rotation switch. The aviation plug, the servo motor, the start-stop switch and the forward and reverse rotation switch are all electrically connected with the start-stop photoelectric control panel, the servo motor is in transmission connection with an electric screwdriver chuck main shaft through a transmission shaft, and an electric screwdriver chuck push-pull sleeve is arranged at the bottom of the electric screwdriver chuck part. The bottom of the electric screwdriver chuck main shaft is located on the inner side of the electric screwdriver chuck push-pull sleeve. The start-stop switch and the forward and reverse rotation switch are arranged to control start-stop and forward and reverse rotation of the servo motor, the servo motor drives the electric screwdriver chuck main shaft to rotate to output torsion, the torque is large, the rotating speed is moderate, heating is small, mechanical abrasion is avoided, and therefore the service life is long, and the failure rate is low.

The invention is suitable for the field of motor driving and control, and provides a uniform demagnetization fault-tolerant control method and system for maintaining high-performance operation of a motor, and the method comprises the following steps: selecting a motor performance evaluation index sensitive to flux linkage information; determining a demagnetization inflection point of the motor according to the motor performance evaluation index, and setting a compensation strategy at the demagnetization inflection point to establish a demagnetization compensation model; continuously performing demagnetization control on the motor, recording a demagnetization inflection point and setting a compensation strategy at the demagnetization inflection point, establishing a demagnetization compensation model, and integrating the established demagnetization compensation model to obtain a multi-inflection point-multi-model database; obtaining motor performance real-time data through the established observer, querying the database to perform scheme matching in the demagnetization compensation model, and outputting a demagnetization compensation scheme of the motor; according to the method, the compensation model is built, the weakening condition of the motor performance is observed, the motor performance is restored to be normal, and demagnetization fault-tolerant control of motor performance maintenance is achieved.

The utility model relates to the technical field of screening, and discloses an anti-blocking step-by-step screening device which is characterized in that when a control assembly is arranged and an output shaft of a motor drives a rotating rod and a rotating disc to rotate, latches fixed on the surface of the rotating disc abut against a second rack to move; a horizontal rod fixed to the surface of a second rack is stressed to transversely slide in two sets of protruding blocks, when the horizontal rod moves, a transverse rod fixed to the surface of the horizontal rod can drive a first rack to slide on the surface of a gear, and the gear is stressed to drive a round rod and a disc to rotate on the surface of a fixing plate; a stirring plate fixed to the surface of the disc can synchronously stir on the surface of the first screening plate, materials gathered on the surface of the first screening plate are stirred, and the materials are evenly distributed on the surface of the first screening plate, in this way, substances with different particle sizes can be separated more meticulously, the screening precision is improved, meanwhile, compared with a directly-arranged inclined filtering plate, the screening efficiency is improved, and the screening efficiency is improved. And the condition of local material accumulation can be avoided.

The utility model relates to the technical field of mold attaching mechanisms, in particular to a mold attaching mechanism. The winding motor and the unwinding motor work to wind the metal plate roll, in the process, the first electric cylinder drives the mounting frame to move downwards, so that the film roll is attached to and extrudes the metal plate roll, the film attaching motor drives the film roll to rotate to attach a film to the metal plate roll, and the plate shearing structure can cut and strip the metal plate roll. The slitting uncoiling and film attaching mechanism of the plate shearing machine can automatically and continuously complete uncoiling, film attaching and plate shearing operation of a plate coil, the automation degree is high, the film shearing motor drives the lead screw to rotate clockwise, the two nut blocks are made to be close to each other, the cutter and the cutting base are driven to be close to each other, a film is rapidly sheared off, film residues are reduced, and the production efficiency is improved. And the first electric cylinder drives the film roll to move up and down so as to adapt to metal plate rolls with different thicknesses, so that the applicability is improved, and convenience is brought to production work.

The utility model relates to the field of cleaning devices, and discloses an endoscope pipe fitting inner wall cleaning device which comprises a base, the top end of the base is fixedly connected with a supporting column, the inner wall of the supporting column is rotatably connected with a rotating shaft, the rotating shaft is connected with a lifting column through a lifting assembly, and the top end of the lifting column is fixedly connected with a clamping plate. The clamping plate is connected with the clamping hand through a clamping assembly, the top end of the base is fixedly connected with a supporting wall, the inner side of the top of the supporting wall is fixedly connected with a motor, the driving end of the motor is fixedly connected with a mounting base, and the mounting base is connected with a long brush through a clamping assembly. According to the cleaning device, the long brush completely enters the bottommost part of the pipe clamped on the clamping plate, the inner wall of the pipe is completely cleaned, dirt at the bottom is prevented from being left, the long brush is convenient to replace, the replacement time is saved, the efficiency of cleaning operation is improved, and later maintenance of the cleaning device is facilitated.

The invention discloses an anti-segregation batching screen with a dust removal device, which is characterized in that the anti-segregation batching screen comprises a casing, a screen mesh, brushes, swing arms, a rotating shaft, an eccentric link mechanism and a motor driving device, the screen mesh is arranged in the casing, one or more groups of swing arms are arranged on the rotating shaft, the brushes parallel to the cross section of the screen mesh are arranged at the end parts of the swing arms, and the brushes are in movable contact with the screen mesh; the motor driving device is connected with and drives the eccentric connecting rod mechanism to reciprocate, and the rotating shaft is connected with the eccentric connecting rod mechanism and is driven by the eccentric side rod mechanism to reciprocate by a certain angle so as to drive the swing arm to swing back and forth by a certain angle. The vibrating screen is good in stability, the segregation phenomenon of materials can be prevented, and the vibrating screen has a good screening effect on light and fine materials.

According to the real-time clamping force zero point confirmation method, device and equipment and the readable storage medium, in a preset triggering scene, a motor of an EMB actuator is controlled to rotate in the forward clamping direction, motor rotation angle and torque parameters are synchronously collected in real time, and a motor rotation angle-torque curve is generated; according to the characteristic difference of the torque along with the change of the rotation angle before and after contact, selecting a preset calibration torque point on the rotation angle-torque curve, constructing a tangent line through the point, and positioning an intersection point of the tangent line and a motor rotation angle coordinate axis, the intersection point corresponding to a motor rotation angle reference in a contact critical state of a friction block and a brake disc; and the current zero point of the clamping force is obtained after the reference rotation angle is superposed with the comprehensive compensation amount. Accurate capture of a contact critical position is realized through real-time detection of motor rotation angle and torque and curve characteristic analysis, dynamic drift factors are adapted in combination with comprehensive compensation quantity, and zero point real-time updating can be automatically completed in the whole life cycle of the whole vehicle without depending on a fixed calibration value.

The utility model discloses a cable protection intelligent grounding box comprising a box body, the top end of the box body is provided with a top cover, the two sides of the top cover are inclined and are provided with photovoltaic panels, the two sides of the top cover are provided with heat radiation ports, the box body is internally provided with a placing cabinet, the placing cabinet is internally provided with an intelligent monitoring assembly in a sliding manner, and the bottom end of the placing cabinet is internally provided with a support. A motor is arranged above the support, heat dissipation fan blades are connected to the output end of the motor, air inlets are formed in the two sides of the box body, a grounding assembly is arranged in the box body, a plurality of cable penetrating holes are formed in the bottom end of the box body, sleeves are arranged at the bottom end of the interior of the box body, and the sleeves correspond to the cable penetrating holes. According to the utility model, the motor drives the heat dissipation fan blades to rotate, so that heat generated between the cable and the grounding assembly rises, external air enters the box body from the air inlet, and heat generated by the intelligent monitoring assembly is driven to the top cover and is discharged from the heat dissipation port, thereby realizing a heat dissipation effect and preventing damage.

The invention belongs to the related technical field of welding, and particularly discloses an air energy water heater water tank inner container welding device which comprises a first machine base, a motor driving device, an industrial camera, a lifting machine and a second machine base, a lead screw loading table is arranged above one end of the first machine base, and a lead screw is rotationally arranged on the inner side of one end of the lead screw loading table; the lead screw is connected with an output shaft of the motor driving device, a sliding base is slidably installed outside the lead screw loading table and is in threaded fit with the lead screw, the lifting machine is arranged on the upper surface of the sliding base, a plasma welding gun is connected to the outer side of the lifting machine through an arranged movable frame rod, and the second machine base is arranged on one side of the outer wall of the first machine base. A pipe fixing mechanism is arranged on the upper surface of the second machine base, a frame base is arranged at the position, close to the middle, of the upper surface of the second machine base, and hanging and pulling mechanisms are arranged at the two ends in the frame base correspondingly.

The invention discloses a GIS-based emergency geographic information recording device, and relates to the technical field of geographic information recording, the GIS-based emergency geographic information recording device comprises a protection shell, a sealing cover plate is clamped at the top of the protection shell, a mounting plate is arranged in the protection shell, a folding mechanism is arranged in the protection shell and used for adjusting the angle of a protection box, and the GIS-based emergency geographic information recording device further comprises a scanning rotating mechanism, the motor is arranged at the bottom of the protection shell and drives the protection box to rotate. After information acquisition and recording are completed, a first electric push rod is started to drive a protection box and components in the protection box to descend, at the moment, a stepping motor drives a rotating table to rotate, when a fixing block rotates to an initial position, a displacement sensor sends a signal to a control panel, and at the moment, the control panel sends a signal to a second electric push rod; the second electric push rod extends out to drive the mounting seat to be folded towards the bottom of the protection shell, and the sealing cover plate covers the top of the protection shell, so that equipment in the protection box is protected and is prevented from being damaged.

The utility model discloses a screening device for food production, which belongs to the technical field of food production and comprises a workbench, a fixing frame is connected onto the workbench, a limiting groove is formed in the fixing frame, a moving device is slidably connected into the limiting groove, the moving device comprises a moving plate, and the moving plate is arranged on the workbench. A fixed disc is rotationally connected into a circular groove formed in the side face of the movable plate, and an eccentric wheel is rotationally connected into the fixed disc. According to the food production screening device, a limiting groove and a baffle are arranged, a motor is started, the motor drives a first rotating shaft, an eccentric wheel and a cam to synchronously rotate, then when a fixed disc is driven to rotate in a movable plate, the movable plate reciprocates in the limiting groove, and then a connecting rod and a screening box are driven to synchronously and horizontally reciprocate; the device can move the screen box in two directions in the horizontal direction and the vertical direction, the situation that screen holes are blocked due to shaking screening in the single direction is avoided, and the screening efficiency of the device is guaranteed.

The invention discloses an aluminum foil pinhole number detection device for medicine packaging, and relates to the technical field of medicine packaging, the aluminum foil pinhole number detection device comprises a workbench and a moving assembly, the top center of the workbench is provided with a lamp panel, and two ends of the top of the workbench are fixedly provided with side frames. After the aluminum foil is arranged above the lamp panel, the aluminum foil can shield light of the lamp panel and leak light at the pinhole of the aluminum foil, so that the light leak part can be shot and detected through the visual detection camera, and meanwhile, the motor drives the second reciprocating lead screw to rotate, so that the hanging seat can move on the polished rod, and different positions on the aluminum foil can be visually detected; in the process that the lifting seat moves to the toothed plate, the pulley seat is firstly attached to the side frame, so that the movement of the pulley seat is limited, a buffer spring is compressed, and the lifting seat extrudes the toothed plate at the moment, so that the toothed plate passes through a gear shaft, a transmission box, a first synchronous belt wheel set and a second synchronous belt wheel set, and first reciprocating lead screws on the two sides rotate at the same time; therefore, the position of the movable seat can be changed.

The invention relates to the field of co-extrusion production control, and particularly discloses an efficient film bag feeding control system, which is applied to a multi-raw-material synchronous conveying device of a co-extrusion process, and comprises a full-link data acquisition module, a full-link data processing module and a full-link data processing module, the raw material characteristic parameters comprise a melting point T, a stacking density rho and a magnetic sensitive particle loading amount M; the instantaneous load pressure P of each raw material conveying channel, the temperature Tm of a co-extrusion die head melting area, the real-time thickness H of a co-extrusion film layer, stock bin liquid level data and motor rotating speed data are collected and integrated to obtain a full-link original data set; the single-drive linkage conveying mechanism comprises a main servo motor, a plurality of sets of electromagnetic clutches and a plurality of sets of spiral conveying assemblies, and the main servo motor drives a transmission shaft through a synchronous belt. According to the technical scheme, for the co-extrusion process, the multi-raw-material synchronous conveying precision can be matched, and the problems that parameter adjustment lags behind, adaptability is poor and a downstream process feedback closed loop is lacked are solved.

The invention relates to the technical field of gas analysis and detection instruments, and discloses a gas analysis and detection instrument which comprises a gas analysis and detection instrument body, a transverse adjusting piece is arranged above the gas analysis and detection instrument body, a transverse and longitudinal connecting piece is mounted on the transverse adjusting piece, and a longitudinal adjusting piece is connected to the bottom of the transverse and longitudinal connecting piece; wherein the gas analysis detector main body is in sliding connection with the front surface of the longitudinal adjusting piece, multi-dimensional accurate positioning of environmental gas sampling is realized, and the core advantage is reflected on a transverse adjusting system: a mechanical transmission mode of driving a threaded rotating rod by a servo motor is adopted, and dual guidance of a sliding rail and a limiting sliding block is matched, so that the positioning accuracy is improved; and the detector main body can stably move along the horizontal direction. Due to the unique combined design of the buffering device and the adjustable limiting mechanism, flexible buffering protection of the moving terminal point is achieved, and a user is allowed to customize the stroke range according to actual requirements.

The invention belongs to the technical field of low-voltage switch cabinets, and particularly relates to a low-voltage switch cabinet with a good on-off effect, which comprises a cabinet body, an exhaust cavity formed at the bottom of the cabinet body, an air exhaust box fixedly mounted at the top of the cabinet body, a filter screen plate mounted on the side wall of the air exhaust box, a plurality of drawers slidably connected in the cabinet body, and an auxiliary heat dissipation box fixedly connected to the back of the cabinet body. When a second motor drives a rotating shaft to rotate to adjust the position of a movable seat, the rotating shaft rotates to drive a linkage shaft to rotate through a belt ring and a belt pulley, the linkage shaft is meshed with one transmission shaft through a bevel gear, and therefore when the rotating shaft rotates, the annular dehumidification net can be driven to rotate through the transmission shaft; and the position of a drying agent arranged in the annular dehumidification net is adjusted, so that the dehumidification effect is improved, and the problems that air with relatively high humidity enters the cabinet body, easily corrodes electrical components and seriously affects the on-off effect of the electrical components are solved as much as possible.

The invention discloses a high-frequency motor drive multi-rate control method for time sequence disturbance compensation, and the core principle of the method is that low-rate disturbance compensation and a reference tracking trajectory are improved and converted into a time sequence processing process matched with a high-rate control instruction; specifically, a single disturbance compensation value which can be known only at a sampling moment Ts is expanded into time sequence prediction of disturbance changes on N control points in the future through a generalized proportional-integral observer; meanwhile, a low-frequency single reference instruction is constructed into a smooth high-frequency reference trajectory covering N control points through a Lagrange interpolation method, and closed-loop correction of disturbance compensation and reference tracking is achieved on each high-frequency control point Tc. The problem that open-loop prediction errors are continuously accumulated and spread due to mismatching of information updating rates in traditional multi-rate control is fundamentally solved, and therefore high-precision robust control over the high-frequency motor driving system is achieved.