3455 results about "Motor controller" patented technology

The invention relates to an intelligent monitoring alarm method and system for a motor controller, and the method comprises the steps: obtaining an internal circuit signal and a body vibration signal of the motor controller, carrying out the combined noise analysis, and generating a dynamic noise baseline; performing component fault identification based on the dynamic noise baseline and the internal circuit signal to obtain a fault precursor current feature; performing component impact response separation based on the dynamic noise baseline and the body vibration signal to obtain hidden fault vibration characteristics; performing component association mapping on the fault precursor current feature and the hidden fault vibration feature to obtain an internal fault component identifier; and performing alarm analysis based on the fault component identifier, the fault precursor current feature and the hidden fault vibration feature to obtain a graded alarm decision. According to the invention, early fault features can be captured more sensitively, and false alarms and missing alarms are reduced.

The invention provides a test method and device for a motor active short-circuit relay, and a storage medium. The method includes the steps: performing the zero speed detection of a motor after a motor controller completes a low-voltage power-on operation, wherein when the motor controller is powered down, a first relay and a second relay are both switched on; controlling the second relay to be turned on if the motor passes the zero speed detection, and injecting a first excitation signal at the control ends of a first phase winding and a third phase winding through the motor controller; performing injection detection of the first excitation signal to determine whether the first excitation signal is successfully injected or not; controlling the first relay to be turned on if the first excitation signal is successfully injected, and obtaining a voltage across two ends of the first relay; and judging whether the power-on test of the first relay is successful or not according to the voltage across two ends of the first relay. The method can realize the turn-on test of the short-circuit relay, and ensures the reliability of the active short-circuit function of the vehicle motor duringdriving.

The invention provides an electric engine, a control method, a related device, a motor controller and an aircraft, and relates to the technical field of aircrafts. The electric engine comprises a power motor, a heat dissipation system and a control module, a cavity is formed in the power motor, the control module is integrated in the cavity, the space occupied by the electric engine is reduced, and therefore the size of the aircraft is reduced; the control module comprises a plurality of integrated driving modules, part of the driving modules are electrically connected with the power motor so as to control the power motor, and part of the driving modules are electrically connected with a heat dissipation motor in the heat dissipation system so as to control the heat dissipation motor. The performance and efficiency of the electric engine are improved through unified integrated control over the power motor and the heat dissipation motor. And through a unified control architecture, the system design is simplified, the development and maintenance cost is reduced, and the maintainability of the electric engine is improved.

The invention relates to the technical field of automobile material temperature simulation analysis, in particular to an automobile cabin temperature field simulation analysis method and system based on multi-physics field coupling. According to the method, high-precision and high-efficiency simulation is realized through thermal-solid-fluid-electric coupling modeling in combination with the genetic algorithm, the neural network and reinforcement learning AI dynamic optimization, and the problems that the multi-physical field coupling effect cannot be comprehensively reflected and the parameter optimization efficiency is low in the prior art are solved. Time sequence analysis and dynamic boundary condition adjustment are introduced, transient working condition simulation is supported, and temperature field changes in actual driving can be better predicted. Through simultaneous solution of the Maxwell equation and the heat conduction equation, the temperature rise risk of the electronic component is accurately predicted, and the method is suitable for heat management optimization of key components such as a battery pack and a motor controller of a new energy automobile. Cloud high-performance calculation and edge end lightweight model cooperation are adopted, efficient simulation and real-time early warning are achieved, and rapid analysis and design optimization of extreme working conditions are supported.

The invention discloses a thrust compensation control method and system based on a multi-duct electric aircraft, and belongs to the technical field of aviation aircraft control. When the aircraft runs, a motor controller monitors running data of each motor in real time and diagnoses the fault state of each motor in real time, and once a motor triggers power degradation or failure fault, the motor controller can start the motor controller to start the motor controller; and the electric propulsion control unit distributes the thrust of the remaining motors based on an optimization algorithm. Through the above mode, the system can quickly identify the faulty motor and trigger the thrust optimization algorithm in real time by monitoring the running state of the motor in real time, after the fault occurs, the system calculates the current total thrust and total torque according to the initial thrust distribution and the motor position, redistributes the thrust of the remaining non-faulty motors through the optimization algorithm, and the thrust of the non-faulty motors is optimized. The total thrust and the total torque are kept consistent with those before the fault, the attitude of the aircraft is prevented from being out of control, the service life of a motor battery is balanced by minimizing the thrust difference, and the system reliability is improved.

The power control method comprises the steps that a whole machine controller of the excavator receives a detection signal of an excavator load and judges the working condition of the excavator, the required torque is calculated according to the working condition of the excavator, and the required torque is output to a motor controller; the motor controller receives the target rotating speed and the required torque of the complete machine controller and the output rotating speed and the output torque of the engine controller, decides charging and discharging of the system and calculates an ISG motor control signal; and a feed-forward feedback control method is adopted to control the ISG motor to assist in driving the excavator load, the feed-forward control value of the ISG motor is the required torque, and the feedback control value of the ISG motor is the rotating speed error calculation value. According to the power control method of the hybrid power excavator, the time of charging and discharging in the excavation period is distributed, and the torque and the charging and discharging parameters can be set according to the characteristics of the battery and the motor, so that the whole system reaches a balance value.

The invention discloses an energy-saving and consumption-reducing control method and system for a multi-stage variable frequency driven underground belt conveyor, and the method comprises the steps: obtaining coal flow data and conveying belt operation speed data according to a coal flow weight signal and an operation speed signal, and carrying out the filtering processing; abstracting and constructing a type-2 fuzzy set of the input parameters; and starting the belt conveyor, and performing multi-stage accurate control on the belt conveyor in combination with the two-degree-of-freedom PID and the type-II fuzzy set. According to the system, a coal flow monitoring sensor is installed on a belt conveyor; the speed sensor is mounted on the driving roller; the composite frequency conversion unit comprises a main frequency conversion unit and auxiliary frequency conversion units I and II, the main frequency conversion unit comprises a main frequency converter and a main motor which are connected, and each auxiliary frequency conversion unit comprises an auxiliary frequency converter and an auxiliary motor which are connected; the controller is connected with the coal flow monitoring sensor, the speed sensor, the composite frequency conversion unit and the human-computer interaction interface. According to the method and the system, multi-stage accurate control on the running speed of the belt conveyor can be realized, and the energy-saving effect is ideal.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

The invention discloses a short-circuit current limiting and short-circuit recovery transient voltage control device and method for an aviation three-stage power generation system, and the device comprises a three-stage power generator, a power generator controller, a current sensor, a voltage and current collection module, and an asymmetric half-bridge excitation control circuit. Collecting the output current iL and voltage UL of the generator through a digital processor of the generator controller; when short circuit occurs, the given voltage USet of the voltage regulating loop is linearly reduced in a piecewise mode according to the relation between the iL and a preset threshold value, so that the generator works in a constant power interval; and when the short circuit is recovered, closing the upper / lower power tubes of the asymmetric half-bridge excitation control circuit according to the relationship between UL and a preset threshold value in a grading manner, and triggering a negative-pressure follow-current mode of a main excitation winding of the generator controller to quickly extinguish the field. The method can adapt to different generators without adjusting hardware circuit parameters, has no motor ablation risk during short circuit, has transient voltage less than 350V after short circuit recovery, has no power supply interruption in the whole process, has response delay less than 1ms, and greatly improves the safety and robustness of an aviation power supply and distribution system.

The invention provides a motor controller heating system, a control method thereof and a vehicle, and relates to the technical field of vehicle control, and the method comprises the steps: controlling the conduction states of a first switch module, a second switch module, a third switch module and an inverter, the energy storage element, the inverter, the two-phase winding in the three-phase motor and the power battery are connected in sequence to form a charging and discharging loop of the power battery; obtaining a target current and a target voltage of the power battery, a phase current of a first phase winding in the three-phase motor and a current voltage of the power battery; according to the target current, the target voltage, the current voltage and the phase current, the duty ratio of a control pulse of a first phase bridge arm in an inverter connected with the first phase winding is obtained, the first phase bridge arm is controlled according to the duty ratio so as to adjust the current of a charging and discharging loop, mutual charging and discharging between a power battery and an energy storage element can be achieved, and the charging and discharging efficiency is improved. The heating capacity of the power battery is improved, the capacity loss is reduced, and the current can be accurately controlled.

The invention relates to a slope parking control method and system for an electric truck and the electric truck. According to the slope parking control method for the electric truck, a motor controller MCU executes the steps, and state information of the truck is obtained; when the slope sliding condition is met, a slope holding mode is executed; in the hill-holding mode, the MCU determines control parameters according to the current gear and the load state so as to realize zero setting of the rotating speed of the motor; the control parameters comprise a P I parameter, a rotating speed slope parameter and a torque slope parameter. When the truck is parked on the slope, different control parameters can be output to adapt to different gears and different loading states of the truck, and smoothness of the truck in the slope parking process is effectively guaranteed.

The invention relates to the technical field of reciprocation pump control, in particular to a closed-loop control motor-driven ball screw reciprocation pump and a control method, and the closed-loop control motor-driven ball screw reciprocation pump is mainly characterized in that an outlet of a fluid end module is connected with a pressure sensor; the pressure sensor, the motor controller, the rotary transformer and the position sensor are electrically connected with the central controller, the central controller is used for outputting a control signal enabling the driving motor to rotate to the motor controller, and the motor controller is used for controlling the driving motor to operate. According to the scheme, a brake is removed, the defects caused by the brake are avoided, in the prior art, no matter whether a brake pad is abraded or the inertia problem of the brake exists, a brake system cannot be achieved in the industry of the reciprocating pump at all, and in the reciprocating pump, the brake pad is not abraded. The speed, the position and the thrust of the reciprocating pump device are accurately controlled in a full-digital manner through the central controller, so that the ball screw reciprocating pump with the structure achieves the purpose of industrial use in the industry.

The present application provides a control method, device, vehicle and storage medium for vehicle steering. When the automatic U-turn mode is turned on, the vehicle controller obtains the auxiliary parameters of the vehicle according to the pre-activation signal input by the user, and generates the target direction, rotation angle, feedforward torque, target wheel speed, and then sends a steering instruction to the motor controller. The motor controller responds according to the feedforward torque, obtains a response signal, and sends it to the vehicle controller. Based on the response signal, the vehicle controller obtains the swing angle sensor information and the lateral longitudinal acceleration information to calculate the wheel rotation angle and sends it to the motor controller. The motor controller performs self-closed loop control based on the target direction, target wheel speed, wheel rotation angle, rotation angle and auxiliary parameters to control the vehicle to complete the steering. Automatic U-turn and zero turning radius steering of the vehicle are realized, making the vehicle steering more flexible, accurate and efficient, and reducing the rotation error, achieving millisecond-level drive control.

The invention relates to the technical field of fault diagnosis, and particularly discloses a method and a system for checking a power fault position of a controller, and the method comprises the steps: collecting the state data of the controller at the current moment; constructing a fault fusion feature vector; judging a main cause branch of a power fault; and a standby branch is accessed by adopting a first-on-second-off mechanism, and a fault branch is cut off. In the prior art, a single voltage or current threshold value is mainly depended on determination, and especially under a dynamic operation condition that a controller has multi-path redundant power supply, rapid identification and switching of a specific fault path are difficult to realize. Due to the fact that the fault vector fusing the multi-source power features is constructed and the multi-factor weighted aggregation judgment mechanism is introduced, the accuracy of fault recognition and the stability of switching operation are improved, the problem of global power failure caused by fault diffusion is avoided, and the power supply continuity and the fault self-healing capacity of a motor controller system are improved.

Provided are computer-implemented methods for autonomously controlling an aircraft with vertical take-off and landing capabilities and folding wings that includes controlling a plurality of thrust producing components of an aircraft to cause the aircraft to rise vertically when wings of the aircraft are in a first folded configuration, where when the wings of the aircraft are in the first folded configuration, a leading edge of each wing is oriented in a vertical direction setting motor controller gains based on the wings of the aircraft being in the first folded configuration, and causing the aircraft to align with a direction of airflow when the wings of the aircraft are in the first folded configuration, and controlling thrust producing components and control surfaces and internal articulation mechanisms of the aircraft to cause the aircraft to transition from folded wing configuration to unfolded wing configuration. Systems and computer program products are also provided.

The invention relates to the technical field of data processing, and discloses a motor controller research and development method and system based on an intelligent algorithm. The method comprises the steps that after parameter identification is carried out on a motor, PID parameters are optimized through an adaptive differential evolution algorithm; constructing a double-loop control structure according to the optimal PID parameters; designing a virtual sensor based on the optimized double-loop structure and obtaining a health index; fusing the multi-source signal to obtain a fusion speed signal; therefore, a backstepping sliding mode controller is realized and system verification is completed. The motor control system with high fault-tolerant capability is constructed by fusing various intelligent algorithms and virtual sensor technologies, the basic operation performance of the motor can be kept even if the sensor is abnormal or fails, and the reliability and the safety of the system are improved.

The utility model discloses a motor controller, a motor control circuit, a discharge system, a whole vehicle control system and an automobile. The motor controller comprises a plurality of first bridge arms and further comprises a first inductor and / or a second inductor. The first ends of the plurality of first bridge arms are connected with the positive electrode of the power battery through the first switch and are connected with the first end of the direct-current charging port; the second ends of the plurality of first bridge arms are connected with the negative electrode of the power battery and the second end of the direct current charging port; the first end of the first inductor is connected with the midpoint of a first bridge arm, and the second end of the first inductor is connected with the positive electrode of the power battery through the second switch; the first end of the second inductor is connected with the midpoint of a first bridge arm, and the second end of the second inductor is connected with the first end of the direct current charging port through a third switch, so that a power battery can perform direct connection charging, boost charging or buck charging on an electric load, the first bridge arm is multiplexed, and switching of different discharging functions is realized by adding the inductors and the switches; the circuit is simple in structure, small in size and low in cost.

The embodiment of the invention discloses a battery heating method, device and system, a motor controller and a vehicle, the method is applied to the motor controller of the vehicle, the motor controller is used for controlling at least two motors, and the method comprises the steps that in response to a heating request from a battery control unit of the vehicle, target angles of control parameters of the at least two motors are determined, according to the target value of the carrier phase interleaving control angle, the carrier frequency of one of the at least two motors is adjusted, so that ripple currents on buses of the at least two motors are overlapped to heat a power battery of the vehicle, and according to the target mapping relation of the torque and current mapping relation, the current mapped by the torque request value is increased to heat the power battery of the vehicle. Cooling liquid of a vehicle heat exchange system is heated, and the power battery is heated through the cooling liquid. And the heating efficiency of the power battery is improved.

The forward and backward movement control circuit comprises a pump motor and a VCU controller which are connected to a power source in series, and the output end of the VCU controller is in signal connection with the pump motor; the proximity switch is installed on an AGV supporting leg and used for detecting the forward and backward moving position of the pallet fork, the level input end of the VCU controller is connected with the proximity switch, and the level output end of the VCU controller is connected with a forward moving electromagnetic valve and a backward moving electromagnetic valve; the forward-moving electromagnetic valve and the backward-moving electromagnetic valve are connected with oil ways of the forward-moving oil cylinder and the backward-moving oil cylinder respectively and used for controlling forward-moving and backward-moving actions of the pallet fork. Opening and closing of the forward moving electromagnetic valve or the backward moving electromagnetic valve and the working state of the pump motor are controlled through the proximity switch signal and the load switch signal, and control over normal moving, speed reduction and stopping of the pallet fork is achieved.

The invention relates to a virtual hand grasping perception and exoskeleton force feedback mapping method based on virtual-real interaction, and belongs to the technical field of virtual reality, the method comprises the following steps: building a hand exoskeleton, and reading joint data in real time; calculating the pose of each joint coordinate system of the virtual hand relative to the virtual world; according to the calculated poses of all the joints of the virtual hand, the virtual hand is driven to synchronously move with the hand exoskeleton in real time; collision and contact events of the virtual hand and the digital object are monitored in real time, and virtual interaction force generated when the virtual hand interacts with the digital object is calculated; calculating feedback torque required to be output by each hand exoskeleton motor of the hand exoskeleton, and driving the motors to output corresponding feedback force through a motor controller of the hand exoskeleton, so as to realize force feedback of the hand. According to the method, the interaction reality sense in the virtual reality application can be enhanced, the user can interact with the virtual environment more naturally in an immersive mode, and the user experience is improved.

The invention provides a power system, a battery equalization method, an electric vehicle and a storage medium. The power system comprises a controller, a motor controller, a motor and a battery module, and the battery module at least comprises a first battery pack and a second battery pack connected with the first battery pack in series. The controller is connected with the motor controller, and the motor is connected between the motor controller and the battery module; the controller is used for determining first equalization current and first equalization time of the first battery pack according to the current state parameters of the battery modules; according to the first equalizing current and the first equalizing time, controlling a motor controller to conduct a loop between the positive electrode and the negative electrode of the first battery pack so as to charge the motor with the energy of the first battery pack according to the first equalizing current, and controlling the motor controller to conduct a loop between the positive electrode and the negative electrode of the second battery pack so as to discharge the energy stored by the motor to the second battery pack according to the first equalizing current.

The invention discloses a lithium battery endurance prolonging method and system based on motor power curve optimization, and the method comprises the following steps: a motor controller collects a voltage signal of a lithium battery and a current signal of a motor in real time; the real residual capacity SOC of the lithium battery is calculated based on a dynamic internal resistance model, the endurance mileage is remarkably prolonged, the endurance mileage of the vehicle can be increased by 15-22 km and averagely prolonged by about 15% in different test scenes through triple optimization measures, and the problem that the endurance of a BMS-free low-voltage new energy vehicle is short is effectively solved. And the cost advantage is obvious: the existing current detection and ADC resources of the controller are completely reused, hardware does not need to be newly added, the method can be realized only through software upgrading, the problems that the cost is increased by 40% and wiring is complex due to the addition of a BMS system are avoided, and the production cost of the low-voltage new energy vehicle is reduced.

The invention relates to the technical field of motor controllers, and discloses an active circuit breaker, a motor controller, an electric assembly and a vehicle, the active circuit breaker comprises a conducting strip assembly, the conducting strip assembly comprises a first conducting strip and a second conducting strip, and the first conducting strip and the second conducting strip are arranged at an interval in the width direction of the first conducting strip; the detonating device is arranged between the first conducting strip and the second conducting strip, the detonating device is provided with a conducting pin, the extending direction of the conducting pin is parallel to the thickness direction of the first conducting strip, the detonating device is provided with a first firing pin and a second firing pin, the first firing pin is used for impacting the first weak part, and the second firing pin is used for impacting the second weak part. According to the active circuit breaker disclosed by the invention, the space in the thickness direction of the first conducting strip can be utilized for mounting the conducting pin, so that the space in the width and length directions of the first conducting strip can be more redundant, other structures of the motor controller are convenient to mount, and the internal space of the motor controller is optimized.

A controller for a permanent magnet synchronous motor includes a first control loop having a first filter. The first filter has a back-EMF voltage vector input, a magnetic flux vector output with a constant phase shift that is independent of motor speed, and an amplitude response that is inversely proportional to rotor electrical frequency. The first control loop is configured to: generate an adjusted magnetic flux vector from the magnetic flux vector output by the first filter and compensate for the constant phase shift introduced by the first filter; estimate the rotor electrical frequency from the adjusted magnetic flux vector; and feedback a filtered version of the rotor electrical frequency estimate to the first filter as an estimation of the rotor electrical frequency.

An example assembly of an electric power-take off (ePTO) system includes: a housing forming an enclosure therein; an electric motor mounted to the housing inside the enclosure; a motor controller mounted to the housing inside the enclosure; and a hydraulic pump mounted externally to the housing and coupled to the electric.

The invention relates to the technical field of aircraft design, in particular to a general aircraft parallel hybrid power system which comprises a driving motor, a power system and a power system. The motor controller is connected with the driving motor and controls the driving motor; the turbocharged engine is connected with the generator and drives the generator to generate electricity, and the generator is connected with the motor controller; the power battery is connected with the motor controller; and the turbocharged engine and / or the power battery are / is controlled by the motor controller to supply power to the driving motor. The invention further relates to a control method of the system. When the energy demand of the aircraft is larger than 200 kW, the turbocharged engine and the power battery are connected in parallel to supply power to the driving motor; when the energy demand of the aircraft is 60-200 kW, the power battery is cut off, and the turbocharged engine independently supplies power to the driving motor; and when the energy demand of the aircraft is less than 60kW, the turbocharged engine is turned off, and the power battery independently supplies power to the driving motor. And light weight and low cost are realized.

An electric motor may include a motor housing. An electric motor may include a shaft that extends in a longitudinal direction through a length of the motor housing, a first motor disposed within the motor housing and mounted to the shaft, a second motor disposed within the motor housing and mounted to the shaft. An electric motor may include an adaptor disposed within the motor housing, where a portion of the first motor and a portion of the second motor are disposed within the adaptor and the adaptor supports and pilots the first motor and the second motor. An electric motor may include at least one motor controller disposed on the adaptor and within the motor housing, the at least one motor controller electrically connected to the first motor and to the second motor.

This invention provides a random frequency conversion control method for NVH (Noise, Vibration, and Harshness) of a motor controller in a pure electric vehicle. The method includes: simulating the full throttle pedal condition of the entire vehicle on an electric drive test bench to eliminate tire noise and wind noise interference, thereby obtaining a spectrum diagram of the NVH of the electric drive system at the IGBT base frequency under the full throttle pedal condition; analyzing the spectrum diagram to identify the prominent NVH noise range under the full throttle pedal condition, and using this prominent NVH noise range as the entry condition for random frequency conversion; establishing corresponding random frequency conversion models for different prominent NVH noise ranges based on the base frequency of the IGBT switching frequency, to perform random frequency conversion control on the prominent NVH noise ranges, and using the base frequency of the IGBT switching frequency for control in the non-prominent noise ranges. This invention can reduce the switching frequency noise of the motor controller and improve the NVH performance and safety of electric vehicles.

The invention discloses a steering-by-wire system based on cross-system signal detection and a design method of the steering-by-wire system, and belongs to the technical field of automobile steering control, the system comprises a steering execution motor, a steering execution motor controller, a steering gear, a steering road feeling motor, a steering road feeling motor controller, a steering domain controller and a cross-system signal detection module, the cross-system signal detection module performs signal interaction with the steering domain controller, the braking system and the driving system, and is used for collecting and monitoring the running state of each system in real time and collecting multi-system signals to the steering domain controller; the steering domain controller is used for generating control instructions of the steering execution motor and the steering road sensing motor according to the multi-system signal and the steering state feedback signal so as to complete steering. By designing real-time signal interaction of multiple systems, when a fault occurs, a fault source can be quickly diagnosed, a control strategy can be adjusted, and efficient fault diagnosis and redundant fault-tolerant control are realized.

A valve including a housing, a motor within the housing, and a pinout configuration with an electrical contact. The electrical contact is configured to receive and transmit signals. The valve also includes a motor controller that receives power at the valve, receives a control message, and characterizes the control message as a first type. In response to characterizing the control message as the first type, the motor controller controls the motor to set the valve to a first position in response to determining that the electrical contact is electrically closed and controls the motor to set the valve to a second position in response to determining that the electrical contact is electrically open.