253 results about "Motor load" patented technology

The invention discloses a numerical control machine tool dynamic error cooperative compensation control method adaptive to high-speed machining, and relates to the technical field of numerical control machine tool error control. According to the method, a multi-source dynamic error sensing system comprising a grating displacement sensor, a six-dimensional force sensor and the like is constructed to acquire data; after wavelet threshold denoising and Kalman filtering preprocessing, inputting a three-layer LSTM error coupling prediction model combined with an attention mechanism, embedding a servo motor load characteristic curve in the model, and outputting three types of error compensation amounts; through servo-level compensation and machining-level compensation, the position of a feed shaft, the rotating speed of a main shaft, the cutting feed rate and the behavior of a micro-displacement actuator are corrected, and machining errors caused by deflection and vibration conduction of the main shaft are counteracted. And iteratively updating model parameters by using a gradient descent algorithm. According to the method, through multi-source error synchronous sensing, error coupling modeling and hierarchical cooperative compensation, dynamic error cooperative control more adaptive to a high-speed processing scene is realized, and the method has a wide application value.

The invention relates to the technical field of voice recognition, and discloses a voice instruction recognition and cleaning control method for a sweeping robot, which comprises the following steps: synchronously reading a dust collection motor driving pulse width modulation value and a rolling brush motor load current value of the sweeping robot while acquiring an audio signal acquired by a microphone; retrieving and interpolating in a preset working condition noise spectrum mapping table according to the non-acoustic operation state data, determining a predicted mechanical noise power spectrum at the current moment, taking the predicted mechanical noise power spectrum as a priori reference, calculating an instantaneous signal-to-noise ratio of the predicted mechanical noise power spectrum and the frequency domain feature sequence, and constructing a frequency domain confidence mask; according to the method, a feedforward prediction mechanism is constructed by introducing non-acoustic prior information, and response lag of traditional acoustic posteriori estimation during sudden change of working conditions is avoided.

The utility model discloses a brushless motor load detection device, and specifically relates to the motor load detection device technology field, the brushless motor load detection device comprises a control panel, a load assembly, a torque sensor and a limiting mechanism, the side surface of the control panel is provided with the load assembly, and one side of the load assembly far away from the control panel is provided with the torque sensor; a torque sensor is arranged on the load assembly, a limiting mechanism is placed on the side, away from the load assembly, of the torque sensor and comprises a clamping assembly, a moving assembly and a sliding assembly, the moving assembly is installed above the sliding assembly, the clamping assembly is installed above the moving assembly, and all the assemblies can be controlled and monitored in a centralized mode through a control panel; the automatic detection process and data recording are realized, and the working efficiency and the accuracy of measured data are improved.

The invention relates to the technical field of motor testing devices, and provides a propeller motor load characteristic simulation testing device, which comprises a bracket (10), a turntable (20), a plurality of electromagnets, a load motor (50) and a detector (40), the turntable (20) is arranged in the bracket (10), and the propeller motor (100) can drive the turntable (20) to rotate; the electromagnets are used for providing radial force load, axial force load and unbalanced bending moment load for the output shaft; the load motor (50) is used for applying torque to the output shaft; the detector (40) is used for detecting the radial force load, the axial force load, the unbalanced bending moment load and the torque of the output shaft. The propeller motor load characteristic simulation test device can simultaneously, independently or compositely test the radial force load, the axial force load, the unbalanced bending moment load and the torque of the output shaft of the propeller motor (100), and multi-dimensional simulation of the load of the propeller motor is realized.

The invention discloses a lifting type stirring reaction kettle which comprises a base, a stand column, a first moving assembly, a second moving assembly, a first fixing assembly, a second fixing assembly and a glaze spraying assembly, the bottom of the base is fixed to the ground, the stand column is vertically fixed to the top of the base, and the second moving assembly is arranged on the first moving assembly. The glaze spraying assembly is arranged on the second moving assembly, the first fixing assembly and the second fixing assembly are arranged in parallel and located on the two sides of the stand column, and the second moving assembly drives the glaze spraying assembly to move to the position above the first fixing assembly or the second fixing assembly. The first moving assembly drives the glaze spraying assembly to be close to the bottom of the first fixing assembly or the second fixing assembly. The lifting type stirring reaction kettle is high in stirring efficiency, small in motor load and simple and reliable in structure.

The invention relates to a multi-motor load balance control method based on a normalized current average value, and the method comprises the following steps: S1, collecting an actual torque current feedback value and a corresponding rated current value of each loop motor, S2, carrying out the normalization processing of the current feedback values according to the rated value, and calculating a normalized current average value, s4, an extreme value search control algorithm framework is established, and a gain coefficient is optimized by using the framework; S5, gain adjustment is carried out on a deviation value; and S6, respective speed compensation is superposed to an original speed instruction to form a new target speed instruction, and the new target speed instruction is sent to a frequency converter, so that real-time closed-loop adjustment of the multi-motor load is realized. According to the scheme, real-time closed-loop coordination of the power of each motor in the multi-motor driving system is realized, and the operation consistency and robustness of the system are enhanced.

The invention provides a self-adaptive control method and system for an extrusion screw of a plastic extruder, and relates to the technical field of plastic recovery and regeneration, and the method comprises the following steps: collecting operation data of the plastic extruder; calculating a change trend and an effective value according to the machine head melt pressure; a three-level partition model is constructed, a pressure deviation value is calculated based on the effective value and the target reference value, and a pressure control area is generated according to a comparison result of the pressure deviation value and a pressure threshold value; performing consistency judgment on the change trend and the pressure demand direction to generate an adjustment coefficient, and performing step length correction by combining a pressure control region and a motor load current to generate a rotating speed adjustment amount; the to-be-executed rotating speed of the screw is calculated in combination with the real-time rotating speed of the screw, acceleration limiting processing is carried out to generate the target rotating speed of the screw, and the target rotating speed is coded into a control instruction to be sent to the driving unit, so that the self-adaptive control effect of the extrusion screw can be achieved, and false pressure fluctuation caused by material hardness change is effectively prevented; the extrusion stability and the response speed are obviously improved.

The invention relates to the crossing field of mechanical engineering and automatic control, discloses a rapid and accurate prediction positioning method and system for a linear motion module of an industrial robot, and aims to solve the problem of dynamic positioning deviation caused by factors such as elastic deformation, a mechanical gap and a heat effect under high-speed motion. The method comprises the following steps: collecting vibration, strain, temperature and motor load data in real time through a multi-mode sensor array; constructing a space-time dynamic state encoder based on module physical topology, and fusing time sequence convolution and a graph neural network to generate system state representation; predicting a future positioning error of the end effector by using an attention mechanism in combination with a future motion instruction; and a feedforward compensation signal is generated through an inverse dynamic model, and is superposed with an original instruction to form a composite driving instruction. According to the method, control normal form transition from passive feedback to active prediction is realized, and the positioning precision and the movement efficiency under the high-speed working condition are remarkably improved.

The invention discloses a hybrid self-switching bidirectional wireless switched reluctance motor driving system provided and realized by the invention. An independent demagnetization loop is arranged on the motor side, rapid demagnetization is allowed, and energy recovery is achieved. The system wirelessly drives a multi-phase SRM through a single power transfer channel using a single resonant frequency to reduce coupling between multiple power channels. When the WPT system is in forward power, the LCC-S compensation network is adopted to drive the motor load, and the advantage of constant voltage gain when the load changes is achieved; the LCC-LCC / S hybrid self-switching compensation network is adopted to realize charging of a battery load, and has a constant voltage / constant current characteristic; and when the WPT system has negative power, the LCC-LCC compensation network is adopted to realize reverse recovery of energy, and energy interconnection between the motor and the power grid is realized. In addition, an SR motor does not need to be specially designed, and the system has the remarkable advantages of phase current balance, flexible transmission distance, high integration level, maintenance-free property and the like.

The invention discloses a pressure self-adaptive regulation and control method for an oil pressure driving honing head, and relates to the technical field of honing head pressure control evaluation, and the method comprises the steps: integrating multi-source sensor data, including honing head vibration amplitude, oil pressure system pressure fluctuation frequency and main shaft motor load current, and comprehensively calculating a honing state index; therefore, the processing state is accurately evaluated. The method has the technical effects that early-stage signs of abnormal machining can be automatically identified, for example, safety, early warning and abnormal states are distinguished through threshold interval division of honing state indexes, and corresponding pressure adjustment strategies are executed. The current pressure is maintained in the safe state, proportional regulation and control are carried out in the early warning state to slightly correct the pressure, and great adjustment or emergency shutdown measures are taken in the abnormal state, so that machining quality reduction or equipment damage caused by pressure inadaptation is effectively avoided. According to the method, continuous self-adaptive regulation and control in the machining process are achieved, the manual intervention requirement is reduced, the honing precision, the equipment reliability and the production efficiency are improved, meanwhile, the fault risk is reduced through the early warning and shutdown functions, and the method is suitable for high-requirement precision machining scenes. And monitoring and adjustment are executed circularly, so that the stability and consistency of the whole machining process are ensured.

This application discloses a drying control method, apparatus, dryer, and computer-readable storage medium, belonging to the field of dryer technology. The method includes: acquiring motor operation data and temperature and humidity data during the operation of the dryer; extracting features from the motor operation data to obtain motor load features, and extracting features from the temperature and humidity data to obtain temperature and humidity features; determining the load features of the clothing in the dryer based on the motor load features and the temperature and humidity features; determining target control parameters based on the load features; and controlling the operation of the dryer based on the target control parameters. In this way, accurate sensing and adaptive drying of different mixed clothing can be achieved without adding complex sensors, thereby effectively improving the drying effect.

The application relates to the technical field of robots, and discloses a kind of two-degree-of-freedom parallel ankle joint mechanism of humanoid robot and kinematics and mechanics solving method, including seven-link transmission structure, which is composed of two groups of closed-chain transmission of parallel four-bar linkages.Motor I and II are installed on the upper end of the lower leg, and the rotation drives link IV and III to move through link I, II, V and VI, and then coupled control ankle joint pitch and lateral freedom degree.The mechanism realizes load balancing of double motors through parallel transmission, improves equivalent torque, and can combine kinematics and mechanics solving method, so that precise control can be realized only by motor feedback, sensor cost is reduced, and is suitable for high stability motion demand of biped robot.

A motor drive device (1) comprises a control unit (20) that controls the operation of an inverter circuit (11), as well as a current sensor (22) and a bandpass filter (13), which together form a sensing unit for detecting a ripple current flowing to a smoothing capacitor (10). The control unit (20) comprises a current waveform sensing unit (12) that detects a current waveform and a current value of the ripple current based on a sensing value from the sensing unit.The control unit (20) performs a first determination operation to establish a threshold for the current value of the ripple current detected by the current waveform detection unit (12), using a first threshold value. It then performs a second determination operation to establish a threshold for a specific frequency component included in the current waveform of the ripple current, using a second threshold value. Based on the results of the first and second determination operations, the control unit (20) determines whether to decrease the degree of torque control to change a motor current in accordance with a change in the load torque of a motor (4a), or whether to decrease the motor speed of the motor (4a), and controls the torque control degree or the motor speed accordingly.

The invention discloses a high-performance motor driving method based on a motor control algorithm, and the method comprises the steps: carrying out the power connection, inputting a power supply, determining a current requirement according to a motor load, connecting a motor, accessing a communication interface, opening a project directory, entering a development environment, compiling a project, adding a motor control algorithm, burning a program, and carrying out the software burning and communication burning. LIN interface connection is carried out, correct connection is ensured, a corresponding control instruction is sent, instruction format description is carried out, a motor is controlled, electrical parameters during motor control are monitored in real time, and resistance, voltage and capacitance are monitored. According to the high-performance motor driving method based on the motor control algorithm, the MCU is matched with the direct-current brush motor, position detection is carried out through the Hall sensor, the motor control algorithm is input, burning is carried out through LIN communication, multiple working modes are supported, and the high-performance motor driving method has the advantages of being high in precision, high in efficiency and high in reliability.

This invention specifically relates to a drive device for controlling the swinging of a button clip in a button-attaching machine, belonging to the field of sewing machine technology. It includes a button clip, and the button clip and drive device transmit driving force through a clip holder. The drive device includes a swing arm with a rotating shaft supporting its swing. A motor is mounted at one end of the swing arm, driving the swing arm to swing back and forth. A connector is mounted at the other end of the swing arm, and the connector is movably connected to the clip holder. The connector transmits driving force to cause the clip holder to swing. The button clip is mounted on the clip holder, causing the clip holder to drive the button clip to swing. This device has a simple structure, saving internal structural space and reducing transmission components. It uses a direct-drive motor to the swing arm to drive the clip holder's swing, saving manufacturing costs. The simplified structure is more stable, with higher drive stability, reduced failure rate, reduced motor load, more efficient power output, and a longer overall service life.

The invention discloses a motor over-temperature control method and system of a brake-by-wire system, and computer equipment, and the method comprises the steps: detecting the temperature, power and loop pressure state of a motor in real time, and obtaining the over-temperature of the motor according to the target request pressure and the working state of the motor; when the motor is normal and the pressure of the pressure cylinder reaches the target pressure, the pressure cylinder isolation valve is actively closed, and the motor is controlled to withdraw and release the pressure; when the motor is overheated to reduce power or the pressure of the main cylinder exceeds the limit pressure building capacity of the motor, the main cylinder loop is switched to supply pressure; according to the scheme, self-adaptive control over the motor load is achieved, overheating degradation caused by long-time high load is avoided, braking continuity and safety in different thermal states are guaranteed, and the system reliability and the braking force upper limit are improved.

This invention provides a vibration damping component and a motor having the same. The vibration damping component includes an angle disc and a damping element. The angle disc has an angle scale around its circumference. The damping element is located on the angle disc and includes a damping ring body and a positioning ear formed on the outer peripheral wall of the damping ring body. According to this invention, when the vibration damping component is applied to a motor, if the motor load changes or the installation angle needs to be adjusted, simply rotate the angle disc so that the corresponding angle scale line on it aligns with the motor's cable outlet sleeve. Since the relative position between the angle disc and the damping element does not change, the rotation of the angle disc will result in the positioning ear of the damping element forming a preset installation angle with the cable outlet sleeve. This allows the vibration damping component to cope with any change in motor load or any adjustment of installation angle, solving the technical problem that damping rings with different installation angles cannot be used interchangeably. This reduces the types of components, lowers process costs, and improves the degree of versatility.

The present application relates to mountain rail transit technical field, provide a kind of based on multi-information fusion's rack train speed measurement positioning method, device and system, the method is read by the vehicle-mounted reader of setting at train bottom the encoding information of ground pulse width encoding signboard, and it is compared with the line basic data stored, realize train absolute position acquisition, simultaneously receive the count information of magnetic electric type speed sensor at gear and reflected photoelectric sensor at rack, and combine gear motor load state to determine train running state, then calculate train relative running distance and running speed, and the absolute position is fused with relative running distance, finally obtain train real-time positioning information and actual running speed, when error exceeds threshold value, issue warning and recalculate.The present application improves the precision and reliability of train positioning and speed measurement, realizes rack section train continuous, dynamic, accurate operation control, has significant engineering application value.

The utility model discloses a kind of fixed crystal machine thimble assemblies with gravity balancing device, including thimble piece, voice coil motor and magnetic spring assembly, the voice coil motor is connected and drives the thimble piece vertical reciprocating motion, the voice coil motor includes voice coil motor rotor and voice coil motor stator, the magnetic spring assembly includes magnetic spring, the magnetic spring includes magnetic spring rotor and magnetic spring stator, the voice coil motor stator and the magnetic spring stator are fixed immovably, the voice coil motor rotor indirectly fixed connection the magnetic spring rotor. The beneficial effects of the utility model technical scheme are: in the present scheme, constant magnetic force spring is used, under the condition that load force is constant in guaranteeing motor operation process, due to the supporting effect of magnetic force, so that motor load is reduced, relatively small size motor can be selected, prolong the service life of motor while also reduce the working energy consumption.

The utility model discloses a high-strength servo air-cooled motor fan cover fixing structure, which comprises a fan cover shell, a fan cover supporting plate is welded in the fan cover shell, and a honeycomb-shaped rear cover plate is mounted at one end of the fan cover shell. According to the utility model, the fan housing, the fan housing supporting connecting plate and the honeycomb-shaped rear cover plate are all made of cold-rolled galvanized steel sheets, so that the fan housing is high in strength, convenient to process and suitable for bearing resonance generated by motor load; the fan housing adopts a hexagonal structural design, so that the reliability is higher when the motor is placed on the ground, and the appearance is strengthened; the fan housing shell and the fan housing supporting connecting plate are connected in a spot welding manner, so that the structural strength of the fan housing is enhanced; and the fan housing and the honeycomb-shaped rear cover plate as well as the motor body and the fan housing are fixed by additionally arranging elastic washers, smearing thread glue and then using hexagon screws.

The invention provides a sintering main exhaust fan energy-saving potential diagnosis method, device and equipment and a storage medium, and the method comprises the steps: collecting the operation parameter data of a fan system in a typical normal production period, including working condition parameters, electric energy parameters and process parameters; and performing fusion analysis according to the first potential diagnosis criterion, the second potential diagnosis criterion and the third potential diagnosis criterion to obtain an energy-saving potential diagnosis result. According to the method, through multi-criterion fusion diagnosis, three quantitative models of working condition deviation degree, motor load rate and system efficiency are constructed, fuzzy judgment depending on experience is converted into accurate quantitative analysis driven by data and models, comprehensive evaluation is carried out from three dimensions of equipment operation working condition, load matching and system energy efficiency, the one-sidedness of a single index is overcome, and the system efficiency is improved. The diagnosis conclusion is more reliable, required data are all parameters easy to obtain on site, the model calculation is rapid, the method is suitable for rapid screening and priority ranking, and the evaluation cost is remarkably saved.

This application provides a motor load adaptive adjustment method based on analog circuits, relating to the field of motor control technology, including the following steps: converting the load current in the motor circuit into a first voltage signal, and generating a mode selection signal based on the amplitude and rate of change of the signal; wherein, when the amplitude of the first voltage signal exceeds a first threshold and its rate of change exceeds a second threshold, the mode selection signal indicates a dynamic response mode; otherwise, the mode selection signal indicates a steady-state adjustment mode; when the indication is a steady-state adjustment mode, the first voltage signal is introduced into a first path, which includes a first error amplifier with a first proportional coefficient; when the indication is a dynamic response mode, the first voltage signal is introduced into a second path, which includes a second error amplifier with a second proportional coefficient greater than the first proportional coefficient; generating and outputting a motor drive signal according to the adjustment signal output from the selected path.

The invention relates to a model-based fuel cell air compressor high-speed motor control rack and method. The control rack comprises an air compressor high-speed motor load control model, a high-power direct-current power supply, a three-phase two-level motor driver, a motor rapid prototype controller, an upper computer, a permanent magnet synchronous motor, an eddy current brake, a torque sensor and a signal acquisition and coding unit. The control rack constructs a load control model based on air compressor MAP data and a load torque optimization algorithm, calculates a target load torque corresponding to the highest adiabatic efficiency point according to any rotating speed, and controls the eddy current brake to perform accurate load simulation; meanwhile, a user-defined control algorithm is automatically compiled and deployed to a motor driver through a rapid prototype controller, the permanent magnet synchronous motor is driven to operate under a simulated load, and high-precision signal feedback is combined, so that safe, efficient and high-fidelity real-time closed-loop verification of the control algorithm is realized, and the research and development period is remarkably shortened.

The application discloses a kind of steering system, vehicle and the control method of steering system, steering system includes: steering wheel, transmission assembly, hand feeling motor and mechanical hand feeling component, transmission assembly includes first transmission and second transmission, first transmission and second transmission are respectively matched with steering wheel, and steering wheel can drive at least one movement in first transmission and second transmission;Hand feeling motor is transmission matched with first transmission, and hand feeling motor is suitable for first transmission to exert electric damping force;The mechanical hand feeling component is transmission matched with the second transmission, and the mechanical hand feeling component is suitable for the second transmission to exert mechanical damping force.Thereby, it makes hand feeling motor and mechanical hand feeling component can work cooperatively, to make force sense not completely rely on motor feedback, guarantee force sense redundancy, improve safety performance, and can optimize force sense, make force sense simulation more real, can also reduce motor load, prolong motor life, reduce energy consumption.

The invention provides a method and system for predicting the potential failure risk of an exhaust gas recirculation valve. The method comprises the following steps that a first monitoring signal reflecting the mechanical motion state of the exhaust gas recirculation valve is obtained; acquiring a second monitoring signal reflecting the load state of the driving motor of the exhaust gas recirculation valve; acquiring a third monitoring signal reflecting the thermodynamic state of the exhaust gas recirculation valve driving motor; respectively calculating first, second and third risk indication parameters based on the first, second and third monitoring signals; performing fusion processing on the first risk indication parameter, the second risk indication parameter and the third risk indication parameter to generate a comprehensive risk degree score; and when the comprehensive risk degree score exceeds a preset risk threshold value, generating a risk prompt signal. The probability of the clamping stagnation risk of the EGR valve is effectively reflected, and early warning is carried out in advance.

Provided are an adaptive control method for a load of a motor and an outdoor working vehicle. According to the control method, by pre-storing a correspondence between an operating parameter and the load of the motor, a correspondence between the operating parameter and a performance parameter of the motor, and an upper boundary threshold and a lower boundary threshold corresponding to the load, and by comparing a matching situation between a real-time operating parameter and a load parameter, the performance parameter of the motor is adjusted through straight line fitting or curve fitting to adapt to the load. Adjusting the performance parameter of the motor includes increasing / decreasing a power of the motor, increasing / decreasing a rotating speed of the motor, increasing / decreasing a current of the motor, and increasing / decreasing a torque of the motor.

The invention discloses an underwater motor load simulation test device, which comprises a water tank and an axial force loading system, and is characterized in that the axial force loading system is sequentially connected with a pushing and twisting assembly, a front connection telescopic sealing assembly and an output load system; the actual working condition of the underwater motor in the underwater operation process can be simulated, a reference basis is provided for test performance verification of the underwater motor, and high economic value and social benefits are achieved.

The utility model discloses a motor, compressor and refrigeration equipment, and relates to the motor technology field, the motor comprises a stator and a rotor, the minimum inner diameter of the stator is D1, the maximum outer diameter of the stator is D2, the stator comprises a stator iron core, the stator iron core is provided with stator teeth, and the tooth width of the stator teeth is Bt; the rotor is rotationally arranged in the stator, the number of pole pairs of the rotor is P, the rotor comprises a rotor iron core and permanent magnets, the rotor iron core is provided with a plurality of magnet grooves in the circumferential direction, openings of the magnet grooves are arranged towards the outer circumference of the rotor iron core, and three permanent magnets arranged in the extending direction of the magnet grooves are arranged in each magnet groove; the total radial cross section area of the three permanent magnets is S, the distance between points, closest to the outer circumference of the rotor core, of the two permanent magnets located at the ends is X, and the formula is met that (D2 * D1) / (2S * P) / 10 is larger than or equal to 1.1 and smaller than or equal to 3.2, and Bt / X is larger than or equal to 0.28 and smaller than or equal to 0.75. The technical scheme provided by the utility model can further reduce the iron loss under the motor load condition, thereby improving the motor efficiency.

This invention proposes a turret servo training experimental platform for servo error data acquisition and diagnosis, comprising a base, a set of long slide rails, three lead screw slides (numbered one to three), a load motor, and a torque motor mounted on the base. The load motor, which is the motor under test, has its output shaft connected to a reducer and is mounted on the second slide. The second slide is mounted on the first slide, cooperating to achieve lateral and longitudinal movement of the load motor. The torque motor provides torque to the load motor and is mounted on the slide. The third slide enables lateral movement of the torque motor. The platform also includes an inertia wheel and a torque sensor. One end of the inertia wheel is connected to the reducer output via a first coupling, and the other end is connected to the torque sensor via a second coupling. The torque sensor is connected to the torque motor via a third coupling. This invention adopts a modular design, allowing all major functional components to be replaced as needed, resulting in high expandability and significant potential for future upgrades.

This invention discloses a simulated load testing system and method for underwater vehicles. The system's base plate, from right to left, comprises a vehicle mounting device, a servo motor loading system, and a propeller loading system. The servo motor loading system includes a torsion bar spring, a torsion spring adjustment device, a rudder plate clamp, and a mounting device. The mounting device is located on the base plate. Torsion spring adjustment devices are embedded around the inner perimeter of the mounting device, each with a torsion bar spring facing inwards. Each torsion bar spring ends in a rudder plate clamp. The propeller loading system includes a magnetic powder brake, a brake control device, a brake mounting device, a coupling, and a bevel gear. Two brake mounting devices are located on the base plate, each with a magnetic powder brake connected to the coupling and the bevel gear, respectively. This invention provides a simulated load testing system and method for underwater vehicles that is easy to install, has a reliable structure, and can operate stably.