21 results about "Motor selection" patented technology

This invention relates to the field of electric drive technology, and particularly to a dynamic matching method, device, system, medium, and product for electric drive systems based on load spectrum driving. The method includes: acquiring load spectrum data based on the operating conditions of the electric drive system and the fatigue work cycle table of engineering machinery; classifying the load spectrum data, judging the motor's overload suitability, and compiling a cyclic load spectrum; obtaining the motor's theoretical temperature rise result and the motor's thermal simulation temperature result; dynamically adjusting the motor's thermal capacitance coefficient and thermal resistance coefficient based on the obtained motor theoretical temperature rise result and motor thermal simulation temperature result; and outputting the final motor thermal capacitance coefficient and motor thermal resistance coefficient. For redundancy optimization in motor overload matching, a closed-loop process of drive system load spectrum acquisition – load spectrum analysis – overload temperature rise theoretical calculation – motor thermal simulation verification is used to solve the problems of excessive redundancy, insufficient dynamic adaptability, and poor economy in traditional motor selection.

A propulsion assembly (100) comprising: first and second engines (1, 2) each having a gas generator (12, 22) and a free turbine (11, 21); a main rotor (62) coupled to the free turbine (11, 21); the engines (1, 2) each comprise: a first electric machine (30, 40) coupled only to the gas generator (12, 22); and a second electric machine (32, 42) coupled to the gas generator (12, 22) by means of first coupling means (34, 44) when rotating in a first direction and coupled to the free turbine (11, 21) by means of second coupling means (36, 46) when rotating in a second direction, the first electric machine (30, 40) selectively operating in a motor mode or a generator mode, the second electric machine (32, 42) being coupled to the gas generator (12, 22) by means of first coupling means (34, 44) when rotating in a first direction and to the free turbine (11, 21) by means of second coupling means (36, 46) when rotating in a second direction. The second electric machine (32, 42) operates in a motor mode when rotated in a first direction and selectively operates in a motor mode or a generator mode when rotated in a second direction.

The utility model relates to the technical field of vehicle transmission, in particular to a hybrid power system and a vehicle, the hybrid power system comprises a transmission system assembly, the transmission system assembly is provided with a power input end and a power output end which are in transmission connection, and the power output end is selectively connected with wheels through a first clutch; the motor is connected with the power input end through a connecting shaft; the engine is selectively connected with the motor through a second clutch; and the air conditioner compressor is selectively connected with the motor through a third clutch. Efficient conversion and transmission of power can be achieved, meanwhile, the structure is simple, and the space utilization rate of the vehicle can be increased.

A direction selector mechanism adapted to cause a motor to selectively rotate in either one of first and second rotational directions. The direction selector mechanism includes a selector switch slidably or rotatably coupled to the tool and adapted to be selectively positioned between one of first and second positions, a non-contact actuator disposed in the selector switch, and a non-contact sensor adapted to detect the proximity of the non-contact actuator.

The invention relates to the technical field of vehicles, and discloses a motor driving demand power determination method and device, equipment and a storage medium, and the determination method comprises the steps: obtaining acceleration performance demand information; the acceleration performance demand information comprises target acceleration duration required for increasing the speed of the vehicle from the zero speed to the target speed; determining the required average driving power when the motor meets the corresponding acceleration performance requirement according to the acceleration performance requirement information; according to the target vehicle speed, the average driving power, the inflection point rotating speed of the motor, the wheel radius of the vehicle and the total speed ratio of a transmission system, the driving required maximum power needed when the motor meets the acceleration performance requirement is determined, a theoretical basis is provided for motor type selection matching or customization, and the situation of motor undermatching is avoided.

An engine selection device (10) comprising: a velocity calculation unit (16) configured to calculate an average velocity from a velocity waveform of a motor configured to drive a specific driven object, wherein the velocity waveform is obtained when the driven object is made to perform a prescribed operation, a current calculation unit (18) configured to calculate the RMS value of the current from a current waveform of the motor configured to drive the driven object, wherein the current waveform is obtained when the driven object is allowed to perform the prescribed operation, a storage unit (22) designed to store a motor characteristic for a speed of a target motor serving as the object to be selected, and a determination unit (24) designed to determine whether the prescribed operation is possible by the target motor or not, using the motor characteristics at average speed and the RMS value of the current.

A control apparatus, which controls a drive motor that drives a rotor installed in an electrical aircraft, instructs the drive motor to selectively operate in at least two motor-control modes. The at least two motor-control modes include a flying motor-control mode for causing the electrical aircraft to fly, and a cleaning motor-control mode for cleaning the rotor. The control apparatus controls, in the cleaning motor-control mode, the drive motor such that a rotational frequency of the drive motor is lower than a predetermined human-audible frequency range.

The invention provides a central drive vehicle type motor type selection matching method, system and device, and belongs to the technical field of new energy commercial vehicles. The method comprises the steps of firstly obtaining vehicle parameters and performance demand indexes; then, on the basis of a vehicle driving kinetic equation integrated with a multi-factor dynamic rolling resistance model, basic parameters of motors are calculated, a screening range is determined in combination with a safety coefficient, and candidate motors are preliminarily selected from a resource library; thirdly, performing dual dynamic performance verification on the candidate motor by adopting a mode that Matlab calculation and Cruise simulation are parallel; and finally, by analyzing the area proportion of the high-efficiency region in each motor efficiency map and combining the distribution condition of the motor working points under the typical working condition of the target vehicle type, comprehensive economy evaluation is carried out, so that the final model selection is determined. According to the method, the defects that a traditional electric drive bridge scheme is prone to overheating and the empirical formula error is large are effectively overcome, and the system reliability, the matching precision and the full-life-cycle economical efficiency under the complex working condition are remarkably improved.

The invention discloses a motor control suitability evaluation method based on deep learning, and relates to the technical field of motor suitability evaluation. According to the dynamic characteristics of a motor control system and the characteristics of a motor, a model architecture of a convolutional neural network is adopted, and an evaluation system with control precision and response speed as core indexes is constructed. The research process comprises the following steps: firstly, constructing a motor simulation model based on five typical motor types, and collecting motor operation data and working condition parameters in a fixed time window to establish a multi-dimensional data set; secondly, a deep learning network based on a convolutional neural network is designed, spatial-temporal characteristics and time sequence association are captured, and key characteristic weights are continuously iteratively optimized; according to the method, the comprehensive adaptation performance of the motor control system can be effectively quantified, and intelligent decision-making is provided for motor type selection and controller parameter optimization in an industrial scene.

A valve actuator (6) selectively opens and closes a plurality of valves (8). The actuator includes a drive motor (5) that selectively rotates a first rotor (4) about an axis (0) in first and second rotational directions. A second rotor (2) is rotatable about the axis only in the first rotational direction. Actuating fingers (3) are movably mounted in operative connection with the first rotor through drive pins (4a) and are guided to move radially by guides (2a) positioned on the second rotor. A coupling including drive rods (4b) which extend from the first rotor and are movable within arcuate slots (2b) on the second rotor, enables relative rotational movement of the rotors and the outer ends of the actuating fingers to be selectively radially extended and retracted. The outer ends of the actuating fingers are engaged with one or more valves to control the flow of working fluid.

The application provides a strip finishing line tension distribution calculation and motor selection method and system, which comprises the following steps: determining the tension requirement value of the strip to be processed at the entrance of a straightening machine in the strip finishing line according to the width, thickness and yield strength limit of the strip to be processed; gradually deriving the tension requirement value at each tension roller in the strip finishing line from front to back according to the tension requirement value of the strip to be processed at the entrance of the straightening machine; determining the basic parameters of the required motor at each tension roller according to the tension requirement value at each tension roller, and selecting the motor according to the basic parameters of the motor; calculating the output torque of the selected motor at each tension roller under the rated power, and calculating the actual output tension at each tension roller according to the output torque of the motor, the reduction ratio and the acting diameter; comparing the actual output tension at each tension roller with the tension requirement value, and determining whether the selection of the motor meets the production requirement. The application realizes automatic and accurate motor selection.

Embodiments of the present application provide a shield machine cutter control method, an electronic device and a storage medium. The method comprises: when original motor load data of each cutter motor in a previous working cycle is detected, determining a target number of cutter motors to be started according to the original motor load data and a preset motor selection rule; controlling each cutter motor to be started to start; obtaining real-time load rate data of each cutter motor; determining a cutter motor to be adjusted according to the real-time load rate data; controlling a frequency converter according to a preset frequency converter control strategy to adjust the working state of the cutter motor to be adjusted, and jumping to the step of obtaining the real-time load rate data of each cutter motor until the current working cycle ends. By dynamically matching the number of cutter motors to be put into operation and the actual tunneling load, the long-time low-load operation and unnecessary motor input are reduced under the premise of meeting the construction requirements, the power utilization rate is improved, and the overall operation economy is improved.

The application relates to a power system and a vehicle, the power system comprising a first motor and a clutch, the clutch being configured to selectively form a power coupling or disengage the power coupling with the first motor, wherein the first motor is power-coupled with the clutch to make the first motor have a power generation mode of receiving power through the clutch and a driving mode of driving the clutch. Through the above technical scheme, the power coupling and disengagement between the clutch and the first motor are utilized, so that the first motor has the power generation mode and the driving mode, the mode of the first motor can be changed according to the load demand, the first motor can generate power and output power, power redundancy is realized, and the power distribution of the power system where the first motor is located is more reasonable.

The invention provides an adaptive energy management control for a hybrid powertrain. A hybrid vehicle includes a powertrain having an engine, an electric machine, and a disconnect clutch configured to selectively couple the engine and the electric machine. The vehicle also includes a controller programmed to command a torque distribution between the engine and the electric machine for a given operating point defined by a driveline speed and a driver demand torque, the torque distribution depending on a duration during which the driveline has been at the given operating point in a previous drive cycle, the torque commanded to the engine decreases and the torque commanded to the electric machine increases as the duration decreases for successive driving cycles.

The invention discloses a driving assembly of a vehicle and the vehicle, and relates to the field of vehicles, a plurality of first driving gears and a plurality of first driven gears are correspondingly meshed and are different in transmission ratio, a first motor is selectively in transmission connection with any first driving gear, and the plurality of first driven gears are all in transmission connection with a first half shaft; the second driving gears and the second driven gears are correspondingly meshed and are different in transmission ratio, the second motor is selectively in transmission connection with any second driving gear, and the second driven gears are all in transmission connection with the second half shaft. Therefore, the driving assembly has multiple speed ratios, the first motor and the second motor can be located on a better efficiency curve when facing multiple working conditions, the power of the first motor and the power of the second motor can be fully utilized, the size of the first motor and the size of the second motor can be properly reduced, the design and layout difficulty of the driving assembly can be reduced, and the driving assembly has the multiple speed ratios. Wheels on the two sides can be independently controlled, and the control performance of the vehicle can be improved.

The application relates to the technical field of motor selection, in particular to a motor selection method and system, which comprises the following steps: constructing a distributed data query library, introducing a standardized feature vector into the distributed data query library to match a candidate motor model set; obtaining comprehensive performance scores of each candidate motor model, triggering a model elimination mechanism based on a preset score value threshold, performing performance parameter sorting on the retained candidate motor models to generate an optimal motor model set; obtaining comprehensive energy efficiency scores of each optimal motor model and establishing a Pareto frontier solution set for secondary screening to obtain a recommended motor model set; and dividing the recommended motor model into multiple motor selection levels and taking the motor selection levels as the final motor selection result output. The application improves the scientificity, accuracy and practicability of motor selection through an intelligent motor selection process, and provides high-quality selection decision support for users.

A method for passive damping in a steer-by-wire handwheel actuator includes selecting a number of windings for a motor of a handwheel actuator; shorting a subset of windings of the number of windings, each winding of the subset of windings being disposed at an obtuse angle from each other winding of the subset of windings; determining a resistance value for the motor; selectively adjusting the resistance value based on a number of windings associated with the subset of windings; and providing, in series with the subset of windings, at least one metal-oxide-semiconductor field-effect transistor (MOSFET) configured to: vary the resistance associated with the subset of windings based on a vehicle speed; and tune a damping characteristic associated with the handwheel actuator.

This invention relates to a novel auxiliary and main drive motor driven 1INV-nEM system, which employs a single centralized inverter to drive multiple distributed motors, i.e., a 1INV-nEM architecture. The inverter's three-phase output is connected via split buses to multiple motor selection units composed of controllable switching modules. Each motor selection unit selectively couples the inverter's output to a corresponding motor. The control unit receives feedback signals from all motors and achieves time-sharing multiplexing control of multiple motors by controlling the on / off states of the motor selection units. This invention also provides a corresponding torque pulse width modulation (PWM) time-sharing control algorithm. By employing this novel auxiliary and main drive motor driven 1INV-nEM system, motor time-sharing control method, and vehicle, through hardware integration and software time-sharing control, system cost, weight, and wiring complexity are significantly reduced, effectively achieving concurrent control of multiple motors by a single inverter.

Provided is a servo selection system which enables a user to determine validity of selection of a servo motor that is a product with which a servo motor is replaced. A servo selection system (1) comprises a product number input unit (11) and a display control unit (15). The product number input unit (11) receives an input of the product number of a servo motor. The display control unit (15) displays the product numbers (21) of one or more servo motors in descending order of matching rates. The product numbers (21) of the one or more servo motors are selected from the product numbers (21) of the plurality of servo motors on the basis of the matching rates for the respective servo motors having the product numbers (21) of the plurality of servo motors.

The application belongs to the technical field of motor system control, and discloses a motor selection method based on expected tracking tasks and controller structures, which comprises the following steps: first, a second-order differential equation describing the generalized position and generalized speed characteristics of a motor is established; second, the load and expected trajectory involved in the expected tracking task are determined, and constants are selected to represent the upper and lower bounds of the load and expected trajectory; third, an error variable is defined, and an adaptive tracking controller is designed based on the second-order differential equation; fourth, a Lyapunov function is selected to analyze the upper and lower bounds of the error variable; fifth, based on the controller structure, controller parameters, initial value of the error variable, upper and lower bounds of the error variable, and expected task, the upper and lower bounds of the required control torque of the motor and the upper bound of the power are determined, and motor selection is completed according to the boundary conditions. The application realizes the analysis of the peak torque and maximum power of the motor and the tracking of the expected motor position.

The utility model discloses a vehicle-mounted power supply system and a vehicle, and the vehicle-mounted power supply system comprises an engine which is provided with an output shaft; the first generator is arranged on the engine, and the first generator is in transmission connection with the output shaft; the second generator is arranged on the engine, the second generator and the first generator are arranged at an interval, and the second generator is selectively in transmission connection with the output shaft. The first power generator and the second power generator can supply power to the electric equipment of the vehicle and the electric equipment additionally installed on the vehicle, the generating capacity of the second power generator is improved, and the power utilization requirements of the electric equipment of the vehicle and the electric equipment additionally installed on the vehicle can be met at the same time.