6072 results about "Motor controller" patented technology

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 at least three integrated driving modules, part of the driving modules are electrically connected with the power motor so as to control the power motor, part of the driving modules are electrically connected with a variable pitch motor of the propeller so as to control the variable pitch 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, the heat dissipation motor and the variable pitch 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 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 discloses a deep integrated high-voltage system of an extended-range vehicle and a power-on and power-off control method, and relates to the field of new energy high-voltage control. The system comprises a power domain controller, a range extender system, a driving system, a power battery system, a charging system, a thermal management system and a high-voltage auxiliary driving system; the power domain controller is used for integrating control functions of a whole vehicle controller, a battery management controller, a range extending controller and a motor controller on a vehicle so as to realize control management of the whole vehicle; the range extender system is used for executing a control instruction of the power domain controller so as to charge the power battery; the driving system is used for driving the vehicle and recovering braking energy; the power battery system is used for providing electric energy input for the whole vehicle; and the charging system is used for charging the power battery system. The hardware cost of the whole vehicle can be reduced, and later maintenance and upgrading are facilitated.

The invention discloses a hybrid power combine harvester and a control method and a controller thereof, and relates to the technical field of agricultural machinery. The harvester comprises a hybrid power system which comprises a power battery and a range extender composed of an engine and a generator; a working system including a plurality of working members and a plurality of working motors that enable each working member to be driven by the motor; the walking system comprises walking wheels and walking motors used for driving the corresponding walking wheels; the control system comprises a whole vehicle controller and a plurality of motor controllers corresponding to the operation motors, the walking motors and the generators respectively. Wherein the hybrid power system responds to a power control strategy of the control system and provides power for corresponding motors in the operation system and the walking system so as to drive the harvester to walk and operate. The full-electric-drive hybrid power scheme of the harvester is achieved, and the efficiency problem caused by multi-stage mechanical transmission of a traditional harvester is avoided.

The invention provides a chain saw and a cutting tool, and the chain saw comprises a working part which comprises a guide plate and a chain; the main body part comprises a shell; a motor accommodated in the housing; the driving circuit is electrically connected to the motor; a controller accommodated in the housing; the motion detection device is in associated connection with the main body part or the working part, is connected with the controller and is used for detecting the motion variation of the main body part or the working part in at least one direction; the controller is configured to control the motor to enter a braking process when the motion detection device detects that the motion variation of the main body part or the working part in at least one direction exceeds a preset condition; the chain saw is configured to be in communication connection with external equipment; the external device is at least configured for a user to set information related to a preset condition. By the adoption of the technical scheme, the chain saw with the rapid braking function can be provided.

The present disclosure relates to the technical field of vehicles, and provides a vehicle and an energy conversion device and a control method therefor. The energy conversion device includes a motor controller, a bus capacitor, a first switch module, a motor, and a second switch module. By controlling the first switch module and the second switch module to be turned on / off, a motor driving circuit can be formed by a battery pack, the first switch module, the bus capacitor, the motor controller, and the motor, and a charging and discharging circuit can be formed by the battery pack, the second switch module, the motor, the motor controller, and the bus capacitor.

An integrated motor controller includes a charging connector, a battery connector, a first charging circuit, and a second charging circuit. The first charging circuit is connected with the charging connector and the battery connector, and includes a first control switch. The first control switch is configured to control on / off of the first charging circuit. The second charging circuit is connected with the charging connector and the battery connector, and includes a boost module and a second control switch. The second control switch is configured to control on / off of the second charging circuit.

The invention discloses a high-integration-level and efficient-cooling external rotor motor ducted fan system, which belongs to the technical field of ducted fans and comprises a motor stator winding and a fan external rotor integrated part integrally formed by fan blades and a motor external rotor turntable, the integrated shell is integrally formed by a motor inner stator sleeve, a ducted nacelle, a motor controller main shell and a plurality of groups of ducted stationary blades; a cooling structure is mounted on the integrated shell; a motor stator winding is fixedly connected to the outer wall of one end of the integrated shell, the front flow guide cover is fixedly connected to the fan outer rotor integrated part, and the rear flow guide cover is installed at the other end of the integrated shell. And the integrated shell is rotationally connected with the fan outer rotor integrated piece. The system is low in noise, high in integration level, high in system reliability, high in system cooling efficiency, high in power level compatibility and high in expandability.

The invention relates to the technical field of data processing, and discloses a temperature monitoring method and system for a motor controller. The method comprises the steps of obtaining a three-dimensional temperature data flow in real time through a temperature sensor array, performing temperature analysis and hot spot detection, constructing an adaptive protection strategy, dynamically adjusting PWM parameters, and optimizing the operation safety and performance of a motor. According to the invention, the technical problems that the coverage of temperature monitoring points is not comprehensive, and the protection strategy lacks pertinence and adaptability are solved, through multi-point temperature collection and intelligent analysis processing, the accuracy of temperature monitoring of the motor controller and the flexibility of the protection strategy are improved, and it is ensured that the motor is safe and reliable and keeps the optimal performance under different working conditions.

The invention relates to a wheel speed redundancy detection system and method, computer equipment, a storage medium and a vehicle. The system comprises four groups of wheel speed detection modules and a first domain controller, the wheel speed detection module comprises a transmission, a driving motor, a rotary transformer sensor and a motor controller; the transmission is connected with wheels of the vehicle; the driving motor is respectively connected with the transmission and the motor controller; the rotary transformer sensor is arranged on the driving motor and is connected with the motor controller; the motor controller is also connected with the first domain controller, and is used for collecting the resolver signal, obtaining a motor rotating speed according to the resolver signal, and obtaining a corresponding wheel rotating speed according to the gear information of the transmission and the motor rotating speed; the first domain controller is used for performing motion control on the vehicle according to the wheel rotating speed. Redundancy of the vehicle wheel speed signals can be achieved based on the rotary transformer sensor, a wheel speed sensor does not need to be used, and a corresponding sensor wire harness does not need to be added, so that the vehicle using cost can be reduced, and the vehicle development period is shortened.

The invention relates to an electric scooter remote monitoring method, device and equipment based on the Internet of Things and a storage medium, and the method comprises the following steps: if a scooter state feature vector represents that an electric scooter is abnormal, carrying out the multi-modal feature mapping of the electric scooter based on the scooter state feature vector, and carrying out the remote monitoring of the electric scooter based on the multi-modal feature mapping; vehicle abnormal behavior mode characteristics are obtained; performing risk prediction on the electric scooter based on the vehicle abnormal behavior mode characteristics to obtain a risk grade division result; performing distributed processing and priority ranking on the risk grade division result through an edge computing gateway to obtain a control strategy instruction set; the control strategy instruction set is input into the remote motor controller to control the electric scooter, and the technical problems that a traditional management mode mainly depends on manual inspection and regular maintenance, the efficiency is low, the state of the scooter is difficult to monitor in real time, and potential safety hazards are difficult to find in time are solved.

The invention provides a motor controller for vehicle pivot steering, a power assembly and a vehicle. The motor controller is used for controlling a motor to drive a wheel of the vehicle. The vehicle further comprises the other three motors, and the other three motors are used for driving the other three wheels respectively. One motor and the other three motors are used for driving the vehicle to steer in situ, and in the vehicle in-situ steering process, the motor controller is used for receiving a torque indication signal and controlling the output torque of one motor, and responding to the situation that the rotating speed change value of one motor within a preset duration is smaller than a first threshold value; and the motor controller controls a motor to output torque according to the torque indicated by the torque indication signal. And in response to the condition that the rotating speed change value of one motor within the preset duration is greater than or equal to the first threshold value, the motor controller controls the torque output by one motor to be less than or greater than the torque indicated by the torque indication signal. The motor controller actively adjusts the torque output of the motor, so that the steering center of the vehicle is prevented from deviating.

The invention discloses a high-heat-dissipation integrated ducted fan electric propulsion system, which belongs to the technical field of ducted fans and comprises a motor controller, a motor, a motor front bearing, a motor rear bearing, a front fairing, a rear fairing and an integrated fan rotating shaft integrally formed by fan blades and a motor rotating shaft. The integrated nacelle motor shell is integrally formed by a motor shell, a ducted nacelle and a plurality of groups of ducted stationary blades; cooling devices are mounted on the motor shell and the motor controller; the cooling device comprises a cooling water channel and a water cooling cavity; a cooling water channel is arranged on the motor shell; the motor controller is provided with a water cooling cavity, and the cooling water channel is communicated with the water cooling cavity; the front fairing is connected to the left end of the integrated fan rotating shaft, and the rear fairing is connected to the right end of the motor controller. The integrated level is high, the size and the weight are reduced by reducing connecting parts, and the power density is high; the system reliability is high; the system cooling efficiency is high; and the power level compatibility and the expandability are high.

A motor controller for pulse heating of a power battery. The motor controller includes an inverter circuit, the inverter circuit includes three switching transistor bridge arms, two ends of each switching transistor bridge arm are respectively configured to connect to positive and negative electrodes of the power battery through a direct current bus, and bridge arm midpoints of the three switching transistor bridge arms are separately configured to connect to a three-phase winding of a motor. The bridge arm midpoints of the three switching transistor bridge arms are configured to output a three-phase current, the three-phase current is used to generate a pulse alternating current on the direct current bus, and the pulse alternating current is used to heat the power battery. A current of each phase of the three-phase current is a unipolar triangular wave, and a sum of the three-phase current is zero.

The embodiment of the invention provides an inverter, a motor controller and a vehicle, and the inverter comprises an integrated drive control board which comprises a drive part and a control part which are disposed on the same circuit board; the onboard current sensor is used for detecting direct current and converting the direct current into three-phase alternating current; the integrated liquid cooling heat dissipation capacitor comprises a high-voltage film capacitor and a liquid cooling heat dissipation device, and at least part of the high-voltage film capacitor is in contact with the liquid cooling heat dissipation device. At least part of the power semiconductor device is in contact with the liquid cooling radiator, the high-voltage film capacitor is connected with a positive electrode and a negative electrode of an upper bridge of the power semiconductor device through a positive electrode switching copper bar and a negative electrode switching copper bar respectively, and a lower bridge of the power semiconductor device is connected with the three-phase copper bar. The integrated liquid cooling heat dissipation capacitor and the liquid cooling heat dissipation device are arranged to dissipate heat of the power semiconductor device and the high-voltage thin film capacitor, and the high-voltage thin film capacitor and the power semiconductor device can be dissipated at the same time through one liquid cooling heat dissipation device.

The invention provides a three-phase current sampling circuit calibration method and system, and belongs to the technical field of permanent magnet synchronous motor three-phase current sampling calibration, and the method comprises the following steps: sequentially giving UVW three-phase current through a motor controller; respectively acquiring three-phase current data through a current sampling circuit in the motor controller and an external current sensor; performing linear fitting on the acquired three-phase current data to obtain a current sampling compensation coefficient of the UVW three-phase current sampling circuit; and multiplying the current sampling compensation coefficient by an initial sampling coefficient of the current sampling circuit, and calculating to obtain an actual sampling coefficient. The current sampling compensation coefficient can more accurately reflect the performance of the current sampling circuit under the actual working condition, so that errors and deviation are reduced, and the sampling precision of the current sampling circuit under the large current is improved.

The invention provides a water-cooling heat dissipation vehicle-mounted device and an electric vehicle. A shell of the vehicle-mounted device comprises an integrated shell, and the integrated shell comprises an electrical containing groove and an internal water inlet channel. Wherein the electrical containing groove is used for containing the integrated support and the first circuit board, the first circuit board is used for bearing at least one electrical assembly in the vehicle-mounted charger or the motor controller, and the integrated support is arranged between the first circuit board and the groove bottom of the electrical containing groove. The integrated support comprises a support water channel inlet and at least one radiator water channel connector, the support water channel inlet is used for receiving cooling water output by the outlet of the internal water inlet channel, and each radiator water channel connector is used for conveying cooling liquid to at least one of a water cooling radiator of the vehicle-mounted charger or a water cooling radiator of the motor controller. The water cooling radiator of the vehicle-mounted charger and the water cooling radiator of the motor controller are communicated with the internal water inlet channel of the integrated shell through the integrated support, so that the vehicle-mounted device is small in size under the condition that the cooling efficiency of the vehicle-mounted device is improved.

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 utility model discloses a motor controller power supply framework and a new energy vehicle, and relates to the field of new energy vehicles, and the motor controller power supply framework comprises a plurality of power supply modules, a protection module, an upper bridge power supply circuit and a lower bridge power supply circuit. A plurality of redundant power supply modules are arranged, the upper bridge and the lower bridge of the driving circuit for driving the power modules are separated, and independent power supply of the upper bridge driving circuit and the lower bridge driving circuit is realized through the upper bridge power supply circuit and the lower bridge power supply circuit; the motor control module can still control the drive circuit to enter a safe state when a single-point failure condition exists in a power supply framework, so that the problem of overvoltage damage of a power module and a bus capacitor caused by power loss of a system is avoided, and the operation safety is improved.

The invention discloses a hybrid crawler tractor for hills and mountains and a control method. The hybrid crawler tractor comprises a power system, a transmission system, an energy storage system, a driving system and a control system, the power system comprises an engine, a generator and a clutch; the transmission system comprises a mechanical coupling device, a gearbox, a power output shaft and the like; the energy storage system comprises a photovoltaic power generation panel and an energy storage device; the driving system comprises a driving system input shaft, left and right traction motors, left and right planet rows, driving wheels and the like; the control system comprises a whole vehicle controller, an energy storage device controller, a motor controller, an engine controller, a vehicle information sensor, a clutch control unit, a brake control unit and the like. According to the crawler tractor, a double-engine and motor mixed connection double-power flow structure is adopted, operation and running under various complex working conditions in hills and mountains are met, rich solar resources in the region are fully utilized, the advantages of a traditional crawler tractor and a new energy tractor are considered, and long-time operation in busy farming seasons is guaranteed.

The invention provides an energy recovery control method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the driving habit data and road condition data of a user, the driving habit of the user being the habit of the user controlling the vehicle speed and the rotating speed, and the road condition data being used for representing the road congestion condition; calculating a target energy recovery torque according to the driving habit data and the road condition data; and controlling the motor controller to output the target energy recovery torque. In the embodiment of the invention, the target energy recovery torque is calculated according to the driving habit and the road condition data of the user. It can be understood that the self-adaptive energy recovery mode in the embodiment of the invention is more in line with the driving habits of users, and even if different users drive vehicles, different target energy recovery torques can be calculated respectively, so that the requirements of different users for energy recovery intensity are met, and the user experience is improved.

The invention discloses a hardware-in-the-loop test system of a steering system, which comprises an upper computer, a steering execution simulation system, a wire harness connection fault test box and a motor controller, and is characterized in that the upper computer is used for simulating the driving state of a vehicle and generating vehicle operation condition information; the steering execution simulation system is used for simulating a sensor to generate a corresponding sensor signal according to the vehicle operation condition information and sending the sensor signal to the motor controller; the motor controller is used for generating a motor control signal required when the vehicle executes steering operation according to the received sensor signal; the steering execution simulation system is also used for simulating the work of the motor according to the motor control signal and feeding back the working state information of the motor to the motor controller, so that the upper computer can judge whether the logic function of the steering system is normal or not according to the working state information of the motor; the wire harness connection fault test box is used for simulating open circuit and short circuit of signals between the steering execution simulation system and the motor controller so as to realize fault injection test.

The invention discloses an anti-rollover control method and system for a balanced heavy forklift truck, and relates to the field of forklift truck intelligent control, and the method comprises the steps: collecting forklift truck working condition data through a sensor group, transmitting the data to a central controller through a CAN bus, and carrying out the preprocessing; inputting a rollover risk assessment algorithm, calculating a boundary condition of a static stability triangle and dynamic lateral moment balance, generating a rollover risk coefficient in combination with working condition data of the forklift, and outputting a decision instruction set; dynamic load adjustment is carried out through a hydraulic servo controller, and load pose parameters are obtained; a motor controller is driven to implement torque vector distribution, a braking energy recovery unit is involved, controllable slow-release braking is applied to wheels on the inner side, and adjusted wheel motion state parameters are obtained; and comparing the theoretical prediction model to carry out residual analysis, triggering a residual correction strategy, and carrying out repetitive control. The working state of the forklift is collected in real time and dynamically analyzed, so that the safety of the forklift in the operation process is improved.

Disclosed in the present utility model is a new electric motor structure, comprising a unit, an electric motor controller and a support, wherein the unit comprises an electric motor housing, a stator assembly, a rotor assembly, a rotating shaft, a first fan and an air guide cover; the first fan is installed at a rear shaft extension end of the rotating shaft; the air guide cover is installed outside of the first fan, and has an air intake hole; the electric motor controller comprises a control circuit board, a heat sink, high-speed cooling fans and a shell; a high-power chip on the control circuit board is attached to a top plate of the heat sink; several cooling fins arranged at intervals are provided below the top plate of the heat sink; the cooling fins are arranged in an axial direction; the high-speed cooling fans are installed on one side of the heat sink; high-power capacitors extending from the control circuit board are located on the other side of the heat sink; and several air output holes are formed in a front side face of the shell. During low-rotational-speed operation, the high-speed cooling fans are used for providing sufficient air pressure, such that the temperature rise of the whole machine is not excessively high in harsh use environments, thereby prolonging the service life of the whole machine.

In a general aspect, a method can include applying. by a motor controller, a filter to a signal indicating rotational speed of an electric motor to detect an order of vibration of the electric motor to be attenuated. The method can also include providing the filtered signal to a proportional derivative controller, and generating, by the proportional derivative controller, an attenuation signal for attenuating vibration associated with the detected order of vibration. The method can still further include combining the attenuation signal with a torque command signal to produce a combined torque command signal. The torque command signal can indicate an amount of torque requested from the electric motor. The method can further include producing torque with the electric motor based on the combined torque command signal.

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 invention relates to the technical field of electric automobile motor controllers, in particular to an integrated efficient heat dissipation electric control shell, a motor controller and an electric drive assembly. Comprising a shell, a filtering assembly, a capacitor and a main function module, the shell comprises a first cavity and a second cavity, a partition is arranged between the two cavities, a cooling water tank is formed in the partition, and the two ends of the cooling water tank are connected with a cooling water channel inlet and a cooling water channel outlet respectively; a high-voltage input interface is arranged on the outer wall of the second cavity of the shell in a penetrating mode and connected with an external power supply battery pack. The filtering assembly is located in the second cavity of the shell and connected with the high-voltage input interface. The capacitor is installed in the second cavity of the shell and connected with the filtering assembly. The main function module is installed in the first cavity of the shell. The invention can solve the problems of complex assembly process, high cost, low heat dissipation efficiency, large circuit parasitic inductance and the like in the prior art, and has great popularization value.

A modular continuous track system for a utility vehicle is disclosed. The modular continuous track system may include a first crawler unit comprising a first electric motor and a first track mounting system configured to couple the first crawler unit to a first utility platform. The modular continuous track system may include a second crawler unit comprising a second electric motor and a second track mounting system configured to couple the second crawler unit to the first utility platform. The modular continuous track system may include a control system configured to control operation of the first crawler unit and the second crawler unit comprising: a first motor controller electrically coupled to a main controller and the first electric motor, a second motor controller electrically coupled to the main controller and the second electric motor; and the main controller.