38 results about "Motor selection" patented technology

The invention relates to the technical field of motor model selection, in particular to a motor model selection method and system, and the method comprises the steps: constructing a distributed data query library, and importing a standardized feature vector into the distributed data query library to obtain a candidate motor model set through matching; obtaining the comprehensive performance score of each candidate motor model, triggering a model rejection mechanism based on a preset score threshold value, and carrying out performance parameter sorting on the reserved candidate motor models to generate a preferred motor model set; obtaining a comprehensive energy efficiency score of each preferred motor model, and establishing a Pareto frontier solution set for secondary screening to obtain a recommended motor model set; the recommended motor model is divided into a plurality of motor model selection hierarchies, the motor model selection hierarchies serve as the final motor model selection result to be output, the scientificity, accuracy and practicability of motor model selection are improved through the intelligent motor model selection process, and high-quality model selection decision support is provided for a user.

The invention provides a design method of a two-wheeled wheel-legged robot, which relates to the field of wheeled robots, and comprises the following steps: determining a machine body of the two-wheeled wheel-legged robot, adopting a leg four-bar mechanism as a leg configuration, and taking the leg four-bar mechanism and the machine body as a five-bar mechanism together, a universal leg rod length parameter calculation method is deduced based on a planar five-connecting-rod model, key geometric parameters are determined, and robot structure design is completed; establishing a wheel type motion dynamical model and a leg type jump phase motion dynamical model, deducing a universal motor model selection method, calculating driving wheel and joint motor parameters, and completing wheel train design and whole machine motion simulation; carrying out finite element analysis and lightweight design on the key parts; and finally, an LQR control strategy is adopted, and cooperative control verification is completed through analysis and simulation software. Wheeled efficient movement and leg type terrain adaptive capacity are fused, limitation of a single movement mode is broken through, and the environment adaptive boundary of the robot is expanded.

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.

A motor selection device (10) comprising: a speed calculation unit (16) configured to calculate a motor selection speed from a speed waveform of a motor configured to drive a specific driven object, taking into account iron losses generated in a target motor serving as an object to be selected, the speed waveform being obtained when the driven object is made to perform a prescribed operation, a storage unit (22) configured to store a motor characteristic associated with a speed of the target motor serving as the object to be selected, and a determination unit (24) configured to determine whether or not the prescribed operation is possible by the target motor, wherein the motor characteristic is used at the motor selection speed.

A drill system including a drill and a secondary computing device. The drill includes a housing, a controller, a wireless transceiver, a motor, and a chuck. The motor, the controller and the wireless transceiver are housed in the housing. The chuck is selectively driven by the motor. The secondary computing device includes a wireless transceiver which allows wireless communication between the drill and the secondary computing device. The secondary computing device further includes a user interface configured to allow an operator to change operating parameters of the drill. The operating parameters are configured to be automatically reset.

The utility model relates to the technical field of filter presses, and discloses a master-slave oil cylinder differential pressure driving switching full-automatic hydraulic loop for a filter press, which comprises a hydraulic oil tank, a hydraulic oil pump is fixedly connected to one side of the outer wall of the front end of the hydraulic oil tank, and the output end of the hydraulic oil pump is fixedly connected with a first liquid outlet pipe. The end, away from the hydraulic oil pump, of the first liquid outlet pipe is fixedly connected with an overflow valve. During use, the hydraulic oil pump, the overflow valve and the hydraulic control reversing valve are started, the hydraulic oil pump supplies liquid to a rodless cavity of the driving oil cylinder through a pipeline and pushes an oil cylinder rod of the driving oil cylinder to move forwards, and hydraulic oil in a rod cavity of the driving oil cylinder returns to the hydraulic oil tank through the hydraulic control reversing valve; the rodless cavity is filled with liquid through the liquid filling valve, and the rod cavity returns hydraulic oil to the hydraulic oil tank through the pipeline, so that high-efficiency and low-consumption quick-opening operation of the filter press is realized on the premise of not increasing the flow of the hydraulic pump and the specification of a hydraulic station and not improving the type selection of a motor of the hydraulic pump.

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 present invention provides a selection device (10) and a selection method that facilitates the selection of motors and amplifiers by an operator, taking into account auxiliary functions and specifications. The selection device (10) of the present invention selects motors and amplifiers, and the selection device (10) includes: a storage unit (16) that stores the performance of each of a plurality of motors, and stores functional specification information indicating corresponding auxiliary functions and specifications, and amplifiers corresponding to the performance of motors, for each of the plurality of motors and the plurality of amplifiers; an input unit (14) for an operator to input selection information; a motor selection unit (32) that selects a motor that meets the conditions; an amplifier selection unit (34) that selects an amplifier that can drive the motor that meets the conditions; a functional specification information acquisition unit (36) that acquires functional specification information corresponding to the selected motor and the selected amplifier; and a display unit (12) that displays the selected motor, the selected amplifier, and the acquired functional specification information.

A bidirectional thrust assembly comprises a motor, a selective power transfer mechanism, and a plurality of fans; wherein a change in direction of rotation of the motor causes the selective power transfer mechanism to change a torque transfer among the plurality of fans, wherein the fans may be opposing, and wherein the fans may be unidirectional. The bidirectional thrust assembly may be used in or by a plurality of craft or with respect to other objects which may need to be maneuvered, included suspended load control systems, vertical takeoff and landing craft, watercraft.

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.

The utility model discloses a sliding door capable of being automatically opened in power failure, which belongs to the technical field of automatic doors and comprises a door frame, two sliding door leaves, a fixed door leaf, a vertical hinged door and a vertical hinged door machine, the door frame is mounted on a wall, one side of the inside of the door frame is fixedly connected with the fixed door leaf, and one side of the fixed door leaf is provided with the two sliding door leaves capable of translating. A side-hung door capable of being opened horizontally is arranged on one side of the translation door leaf and comprises a side-hung door leaf and a side-hung door column, one side of the side-hung door leaf is inserted into the side-hung door column to be connected with the side-hung door column in a clamped mode, the side-hung door column is rotationally connected with the door frame, a side-hung door machine is arranged at the top of the side-hung door, and a side-hung door motor and a side-hung door controller are arranged in the side-hung door machine. The side-hung door motor can be in direct connection transmission with the side-hung door column and in meshing transmission with the side-hung door leaf through a gear, and the side-hung door motor is selectively connected with the side-hung door leaf or the side-hung door column under the control of the side-hung door controller, so that the side-hung door can be rotationally opened in different directions.

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 utility model discloses a pipeline selector acting on a flowback fluid multi-path sampling device. The pipeline selector comprises a rack, a pipeline selector and a storage device connected with the pipeline selector through a pipeline, the pipeline selector is fixedly arranged on the rack; specifically, the pipeline selector comprises a driving motor and a selector, a plurality of evenly-distributed feeding connectors are arranged on the outer side of the selector at the top of the selector, the feeding connectors are communicated with the interior of the selector, a sampling connector is arranged at the bottom of the selector, and a mixed sampling connector is arranged on the outer side of the selector close to the sampling connector. According to the shale gas well flow-back fluid sampling device, multiple shale gas well flow-back fluids can be sampled through one device only by selecting the pipeline selector, multiple devices do not need to be adopted for collection, and the labor cost and the material cost are effectively reduced; meanwhile, the work of the device can be realized only through the cooperation of the driving motor, the multi-path adopting component and various pipelines, so that the device is more convenient to manage, operate and maintain.

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.

An electronic device according to one embodiment may comprise: a housing including a first housing part and a second housing part movably coupled to the first housing part; and a motor assembly which is disposed in the housing, and which includes a first motor including a first rotor, a second motor including a second rotor, and a coupler disposed between the first motor and the second motor. The electronic device may comprise a gear assembly for moving the second housing part with respect to the first housing part in response to driving of the motor assembly. The electronic device can control the coupler such that an operation of the first rotor and an operation of the second rotor are separated from or connected to each other according to the state of the electronic device and / or a user input.

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 present application provides a selection device (10) and a selection method for efficiently selecting an amplifier capable of driving a motor having a desired performance from the number of settings, price, or setting space of the amplifier. The present application is a selection device (10) for selecting a motor and an amplifier, the selection device (10) comprising: a storage section (16) that stores the performance of the motor for each of a plurality of motors, and stores at least one of the number of control axes, price, and setting space of the amplifier and the performance of the motor that can be driven for each of a plurality of amplifiers; an input section (14) for an operator to input selection information; a motor selection section (28) that selects a motor (α) that satisfies a condition; an amplifier selection section (30) that selects one or more amplifiers (β) that drive a required number of motors (α) that satisfy the condition in such a manner that the total number of settings, total price, or total setting space is minimized; and a display section (12) that displays the selected motor (α) and the selected amplifier (β).

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 provides a design method of an efficient driving system of a flapping-wing aircraft. First, design parameters of a flapping-wing driving system are determined, and an optimal flapping law of a flapping wing is determined, and a rocking arm torque and power of the flapping wing in a cruising state are calculated. Then, flapping mechanism parameters are determined, and motor selection and testing, battery and electronic speed controller selection are carried out on the basis of the determination of the flapping mechanism parameters, and a reducer is designed, so as to complete the design of the driving system of the flapping-wing aircraft. The application starts from the demand of the flapping-wing driving system, and comprehensively considers the characteristics and interface relationship of the battery, the electronic speed controller, the motor, the reducer and the flapping mechanism, and realizes the forward design of the system. Through the method, the efficient design requirement of the system can be realized, and the take-off function requirement is also considered.

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 present disclosure relates to the technical field of vehicles, and particularly relates to a vehicle transmission and hybrid power system, comprising: a differential gear device, the differential gear device comprising a first component, a second component and a third component in driving connection, the differential gear device being a planetary gear set, the planetary gear set comprising a sun gear, a planet carrier and a ring gear; the first component being one of the planet carrier and the sun gear, the second component being the other one of the planet carrier and the sun gear, and the third component being the ring gear; the first component being connected with an engine, and the third component being connected with an output shaft; a first torque transmission mechanism, the first torque transmission mechanism being configured to selectively drivingly connect the second component with a first motor, and the first torque transmission mechanism being further configured to selectively drivingly connect the engine with the first motor; and a second torque transmission mechanism, the second torque transmission mechanism being configured to selectively drivingly connect the engine with the output shaft. The present disclosure can realize that the vehicle meets the required performance in different working modes.

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.