118 results about "Torque coefficient" patented technology

The invention provides a wind turbine generator blade pneumatic unbalance monitoring method and system based on a torque coefficient, and belongs to the technical field of data processing. Real-time operation data of a wind turbine generator under various operation conditions are collected, time sequence correlation processing is carried out on the real-time operation data, and the wind turbine generator blade pneumatic unbalance monitoring method and system based on the torque coefficient are obtained. A torque coefficient time sequence containing continuous timestamp marks and corresponding wind speed fluctuation characteristics are generated, pneumatic deviation analysis is constructed, a theoretical expected value and an actual measurement value of a torque coefficient are dynamically compared, and an initial imbalance index is generated; calling a pre-trained error compensation network to carry out environmental interference factor elimination processing on the initial imbalance index, and outputting a corrected imbalance index after environmental interference elimination; and then, constructing a blade pneumatic state evaluation model based on the result, and generating a blade pneumatic unbalance monitoring result containing an unbalance level and an early warning suggestion. According to the invention, the accuracy of the monitoring result can be improved.

The invention provides a vehicle sliding energy recovery control method and device, a medium and a product, and relates to the technical field of automobiles. The method comprises the following steps: in response to monitoring that a vehicle meets a sliding energy recovery cycle working condition, obtaining an average sliding deceleration of the vehicle in a previous sliding energy recovery cycle working condition; according to the average sliding deceleration, the sliding energy recovery torque coefficient of the vehicle under the current sliding energy recovery cycle working condition is determined; based on the sliding energy recovery torque coefficient, the target sliding energy recovery torque of the vehicle under the current sliding energy recovery cycle working condition is determined; and the target sliding energy recovery torque is adopted, and a motor of the vehicle is controlled to conduct sliding energy recovery under the current sliding energy recovery cycle working condition. According to the invention, the sliding energy recovery efficiency of the vehicle is improved.

The invention discloses a vehicle control method and device, a vehicle and a storage medium, and relates to the technical field of vehicle control. The vehicle control method comprises the steps that when a vehicle is in a target scene, the accumulated duration of the vehicle in the target scene and a first distance corresponding to the vehicle are obtained, a first torque is determined according to the accumulated duration, a first torque coefficient is determined according to the first distance, and a torque compensation value is determined according to the first torque and the first torque coefficient; and determining an output torque according to the torque compensation value and the basic torque, wherein the output torque is used for controlling the running speed and the running acceleration of the vehicle. Wherein the accumulated time length can represent the adaptation condition of the vehicle to the target scene, the first distance can represent the operation range of torque adjustment of the vehicle, and according to the scheme, the scene where the vehicle is located, the adaptability of the vehicle to the current scene and the operability range of the vehicle are integrated; therefore, the power control of the vehicle under the complex road condition is more accurate and stable, and the overall driving experience is improved.

The invention relates to the technical field of motor control, and discloses a torque adjustment control method of a magnetic stirrer based on sample characteristics, which comprises the following steps: acquiring an armature three-phase current and a rotor position signal, and converting the armature three-phase current and the rotor position signal into a quadrature-axis actually measured current and a direct-axis actually measured current by utilizing coordinate transformation logic; extracting a magnetic declination estimated value reflecting the phase lag degree of the stirrer based on an electromagnetic coupling model; calculating a magnetic declination change rate according to the magnetic declination estimated value of the continuous sampling period; a transient compensation current is generated by adopting a nonlinear compensation operator and combining a real-time synchronous torque coefficient; according to the invention, the transient characteristics of the magnetic declination are utilized to realize the real-time sensing of the load disturbance, the magnetic coupling slippage caused by the sudden change of the characteristics of the sample is effectively inhibited, and the stability of the magnetic declination is improved. And the ineffective temperature rise of the motor is reduced while the system stability is guaranteed.

The invention discloses an air density fused fan optimal torque coefficient online optimization method and system, belongs to the technical field of wind turbine generator control, and solves the technical problems that torque coefficients are fixed, dynamic air density changes cannot be adapted, and unit individual performance differences cannot be compensated in the prior art. The method comprises the following steps: constructing an air density-oriented adaptive Markov decision process model, and obtaining a state vector according to the air density; constructing an intelligent agent architecture based on a double-delay depth deterministic strategy gradient, wherein the intelligent agent architecture comprises a strategy network, two value networks and corresponding target network clusters; training and optimizing the agent architecture based on the double-delay depth deterministic strategy gradient; and performing forward propagation calculation on the state vector by adopting the trained agent architecture to obtain an optimal torque coefficient in the current state. The method is suitable for a wind turbine generator torque control scene.

The invention provides a wing body fusion layout high-low speed aerodynamic inverse design method based on a conditional diffusion model, and the method comprises the steps: selecting five profiles of a wing body fusion layout for optimization inverse design through employing a wing body fusion layout three-dimensional airfoil profile design method; and physical condition parameters such as aerodynamic force and torque coefficients are embedded in the conditional denoising diffusion probability model, so that a prediction result can reflect a physical mechanism more accurately. The aerodynamic performance can be effectively improved through the designed three-dimensional configuration, and the reversely-designed airfoil profile meets the preset aerodynamic performance requirement. Compared with the prior art, on the premise that the same optimization performance is achieved, the training time is greatly shortened to 7.5 hours from the original several weeks, and the design efficiency is improved.

This application belongs to the technical field of bolt fastener tightening torque coefficient measurement in low-temperature environments, specifically relating to a device and method for measuring the bolt fastener tightening torque coefficient at -196℃. The device includes a low-temperature environment chamber, a bolt clamp, a nut tightening tool, and an axial force gauge. The low-temperature environment chamber has a liquid nitrogen injection hole. The bolt clamp is installed inside the chamber to clamp the head of the test bolt. One end of the nut tightening tool is located outside the chamber and is used to connect a tightening drive tool and its torque sensor; the other end extends into the chamber to hold the test nut and tighten it onto the bolt thread. The axial force gauge is fitted onto the outer circumference of the bolt thread to measure the preload between the bolt and the nut.

The invention provides a steering wheel torque control method and device, a medium and a vehicle, and relates to the technical field of intelligent drive.The method comprises the steps that under the condition that the transverse control state of the vehicle is a target driving state, first torque acting on a steering wheel by a driver and second torque output by an auxiliary driving system are obtained in real time; determining a torque coefficient of the auxiliary driving system according to a manual torque threshold lower limit, a manual torque threshold upper limit and the first torque; determining a total torque output by a steering wheel according to the first torque, the second torque and a torque coefficient of the auxiliary driving system; and controlling the vehicle to run according to the total torque output by the steering wheel. When the driver and the auxiliary driving system jointly participate in control, torque output of the auxiliary driving system can be dynamically adjusted, so that smooth man-machine interaction and vehicle control are achieved.

The application discloses a lane keeping assistance control method and device, electronic equipment and storage medium. The lane keeping assistance control method comprises the following steps: determining a corresponding first torque coefficient TF according to an LKA intervention stage lka ; determining a second torque coefficient TF according to a control intention of a driver drv ; and determining a target torque coefficient TF according to the first torque coefficient TF lka and the second torque coefficient TF drv . The method has the beneficial effect that the first torque coefficient TF is determined according to the LKA intervention stage lka , the second torque coefficient TF is determined according to the control intention of the driver drv , and the target torque coefficient TF is determined according to the first torque coefficient TF lka and the second torque coefficient TF drv , so that a better man-machine co-driving effect can be achieved by adjusting an EPS application torque coefficient in real time without adding additional hardware devices.

Provided are a method for controlling a motor, a controller, a fitness bike and a storage medium. The method includes: acquiring a vehicle parameter of a fitness bike and an operating parameter of the fitness bike in a present control cycle; determining first power applied to the fitness bike by a user according to the present torque current, the torque coefficient and the present rotational speed; determining second power applied to the fitness bike by the overall resistance according to the overall resistance, the wheel radius and the present rotational speed; and determining a given rotational speed of the motor in the next control cycle according to the total weight, the wheel radius, the first power and the second power, and controlling the motor to operate according to the given rotational speed in the next control cycle.

The present invention provides a vehicle anti-skidding method, device, electronic device and storage medium. The method includes obtaining tire speed and motor speed, obtaining a first judgment value and a second judgment value based on the tire speed and the motor speed, and if the first judgment value is an abnormal value, determining that the vehicle is in an abnormal state at this time, receiving a torque processing request, the torque processing request including a torque processing direction, the torque processing direction is determined according to the second judgment value, detecting the current torque direction of the vehicle, and if the torque processing direction is the same as the current torque direction, obtaining a target torque coefficient based on the tire speed, obtaining a target torque request based on the target torque coefficient and the torque processing request, and executing the target torque request. The method prevents the vehicle from skidding forward and improves driving comfort.

The invention relates to the technical field of new energy commercial vehicles, and particularly provides a hybrid commercial vehicle energy recovery control method, system and device and a storage medium, and the method comprises the steps: collecting and processing multi-source information including brake pedal opening, vehicle state and chassis system signals in real time, and obtaining predictive road condition information in front of the vehicle; identifying the intention of a driver according to the multi-source information and the predictive road condition information; whether energy recovery is allowed or not is judged based on the intention of the driver and the pre-recognized driving style, the optimal motor negative torque is calculated through a model prediction control algorithm when energy recovery is allowed, and the torque coefficient is subjected to self-adaptive correction in combination with the load and the road condition obtained in real time; and based on the optimal motor negative torque and the self-adaptive corrected torque coefficient, collaborative distribution of motor braking force and hydraulic braking force is carried out, and an execution instruction is output. Through multi-source information fusion and predictive control, the comprehensive performance of the hybrid commercial vehicle energy recovery system is effectively improved.

The present invention discloses a structure for unloading a threaded bolt in a high-strength bolt torque coefficient test, comprising a nut baffle, an unloading cylinder provided on the top of the nut baffle, a sealing door installed on the front end surface of the unloading cylinder, a first threaded tube fixedly connected to the top of the nut baffle, a rotating handle fixedly connected to the outer walls of both sides of the first threaded tube, an unloading seat fixedly connected to the inner wall of the bottom end of the unloading cylinder, an unloading groove provided on the top of the unloading seat, a through hole provided at the bottom center of the unloading groove and the center of the nut baffle, a test bolt inserted into the groove, a test nut threadedly connected to the test bolt, an unloading mechanism provided above the unloading seat, and a clamping mechanism provided at the bottom of the nut baffle. The present invention can effectively solve the problem of threaded bolts being difficult to unload in a high-strength bolt torque coefficient test, saves time and effort, has low labor intensity, and has high stability and is not easy to slip.

The present application belongs to the field of wind power generation technology, and particularly relates to a wind power generator optimal torque coefficient correction method and device. First, when the wind power generator exits the maximum power tracking state, a plurality of data pairs of the wind power generator in the maximum power tracking state are obtained, one data pair including a wind energy utilization rate and a tip speed ratio corresponding to the wind energy utilization rate; then, the data pairs with the wind energy utilization rate greater than that in the balance state are selected from the obtained data pairs, and a standard tip speed ratio is calculated according to all the tip speed ratios in the selected data pairs; finally, the optimal torque coefficient is corrected by using the difference between the standard tip speed ratio and the tip speed ratio in the balance state, so that the error gradually decreases, and the optimal torque coefficient can be corrected slowly with the changes of the environment and the wind power generator parameters, and the optimal torque coefficient can be kept optimal for a long time by self-correction adjustment, and the power generation performance of the wind power generator is improved.

The application relates to the technical field of motor control, and discloses a torque adjustment control method for a magnetic stirrer based on sample characteristics, which comprises the following steps: acquiring three-phase armature currents and a rotor position signal, converting the three-phase armature currents and the rotor position signal into measured cross-axis currents and measured direct-axis currents by using a coordinate transformation logic; extracting a magnetic deflection angle estimation value reflecting the phase lag degree of a stirrer based on an electromagnetic coupling model; calculating a magnetic deflection angle change rate according to the magnetic deflection angle estimation value in a continuous sampling period; generating a transient compensation current by using a nonlinear compensation operator and combining a real-time synchronous torque coefficient; and superimposing the transient compensation current on the cross-axis current instruction to generate a compensation torque by fine-tuning the rotating angular velocity of the armature magnetic field. The application realizes real-time sensing of load disturbance by using the transient characteristics of the magnetic deflection angle, effectively suppresses magnetic force coupling slip caused by sudden changes in sample characteristics, guarantees the stability of the system, and reduces the invalid temperature rise of the motor.

This invention belongs to the field of electronic digital data processing and discloses a propulsion modeling method for FPSOs based on Modelica, comprising the following steps: S1: Modeling the propulsion coefficient model of the propeller, including calculating the following parameters: thrust coefficient, thrust torque coefficient, thrust gain coefficient, and thrust torque gain coefficient; S2: Modeling the propeller performance model, including calculating the following parameters: wake coefficient, advance number, thrust loss coefficient, and relative rotational efficiency; S3: Based on the results of steps S1 and S2, outputting the thrust and thrust torque of the propeller, thereby obtaining the propulsion efficiency of the propeller. This method can comprehensively simulate the thrust and torque variation characteristics of the propeller under different operating conditions through a discrete dynamic modeling approach, thus providing accurate simulation support for the dynamic response of FPSO systems in complex marine environments.

The invention discloses a method, a device and equipment for determining a torque coefficient of a wind turbine generator and a medium. The method comprises the steps that to-be-processed data of a target wind turbine generator are obtained, the to-be-processed data are preprocessed to obtain to-be-corrected data, and the to-be-processed data at least comprise wind speed data, rotating speed data and power data; based on the factory power curve of the target wind turbine generator, correcting wind speed data in the to-be-corrected data to obtain target processing data; based on the target processing data and a wind turbine generator torque coefficient calculation model, determining a target torque gain coefficient from a plurality of preset torque gain coefficients of the target wind turbine generator; and determining a target torque coefficient based on a product of the target torque gain coefficient and a preset torque coefficient of the target wind turbine generator. According to the scheme, the setting accuracy of the torque coefficient can be improved, and then the overall operation effect of the wind turbine generator is improved.

The present application relates to a torque control method, apparatus, computer equipment and storage medium in a low-speed risk scenario. The control method includes obtaining vehicle status parameters based on vehicle messages, and determining whether the vehicle is in a low-speed risk scenario based on a comparison of the status parameters with preset conditional parameters; if so, determining the torque coefficient in the low-speed risk scenario, including determining a first limiting coefficient from a preset first mapping relationship based on the vehicle speed and the throttle opening change rate, and determining the first limiting coefficient as the torque coefficient. Based on the torque coefficient, the original torque of the vehicle in the current cycle is limited to obtain a target torque, so as to control the vehicle based on the target torque. The method of the present application is used to improve the problem of risks caused by improper throttle operation when new energy vehicles are stationary or at low speed in the prior art.

The present invention provides a self-following exoskeleton control device, which relates to the technical field of device control and includes: obtaining the target parameters of the exoskeleton in the current cycle; determining the movement direction of the patient in the current cycle based on the target parameters; determining the first driving torque coefficient of the exoskeleton based on the movement direction in the current cycle, the movement direction in the previous cycle of the current cycle, and the count value of the state machine counter in the previous cycle of the current cycle, and determining the second driving torque coefficient of the exoskeleton based on the rotational speed of the motor; determining the driving torque of the exoskeleton in the current cycle based on the first driving torque coefficient, the second driving torque coefficient, and the working gear of the exoskeleton in the current cycle, thus solving the technical problem that the existing exoskeleton control method cannot provide self-following training for patients.

This invention provides an active power regulation method and system that considers instantaneous energy distribution efficiency, relating to the field of wind power grid-connected control technology. The invention establishes a synchronized operation system model based on the system parameters of the wind turbine and synchronous machine, determines the total inherent active power regulation coefficient and synchronous torque coefficient of the system to obtain the conservative instantaneous power of the synchronized system; introduces an active power regulation proportional coefficient into the model and constructs an instantaneous energy function during synchronized system oscillation, analyzing the instantaneous energy distribution law between synchronized units; after a disturbance, the instantaneous energy distribution efficiency is determined based on the instantaneous energy of the synchronous machine, a target efficiency is given, and the active power regulation proportional coefficient is solved based on the total instantaneous energy conservation, thereby calculating the design value of the active power regulation coefficient and setting it in the active power controller of the wind turbine unit, so that when the system detects frequency or power disturbances, the wind turbine participates in regulation according to the design value, thereby improving the power oscillation suppression capability.

The present invention relates to an electric power steering control method, device, vehicle, and readable storage medium, including: obtaining an intelligent driving control mode, a driver's hand force value, and a vehicle speed; obtaining an intelligent driving torque coefficient, a first intelligent driving target torque, and an assist torque according to the intelligent driving control mode, the driver's hand force value, and the vehicle speed; calculating a target motor torque according to the intelligent driving torque coefficient, the first intelligent driving target torque, and the assist torque; and controlling the steering motor to output torque according to the target motor torque. According to the driving control mode, the driver's hand force value, and the vehicle speed, the present invention can adjust the first target torque and the intelligent driving torque coefficient related to the intelligent assisted driving system, as well as the assist torque related to the driver's control end, thereby realizing the transfer of control rights under human-machine co-driving through the method of torque adjustment, without the need for redundant mechanical structures, and reducing the control cost of human-machine co-driving.

The invention discloses a compressor and a refrigerating system. The compressor comprises a machine shell, a motor and a pump body assembly. The shell is provided with an accommodating cavity; the motor is installed in the containing cavity and comprises a rotor and a stator arranged on the periphery of the rotor in a sleeving mode. The pump body assembly is installed in the containing cavity and comprises a crankshaft, a static scroll plate, a movable scroll plate and a support, and the crankshaft sequentially penetrates through the rotor, the static scroll plate, the movable scroll plate and the support; wherein the torque coefficient K of motor stack output of unit displacement meets the relational expression: K = 2 * (V / T) 1 / 2 / D, V is the displacement of the compressor, T is the stack height of the stator, and D is the outer diameter of the stator. According to the scroll compressor, the problem that in the prior art, the output torque of a motor of a scroll compressor of a penetrating structure is insufficient or wasted can be solved.

The invention relates to a steering control method and device. The steering control method comprises the following steps: acquiring a return demand torque based on the current hand power of a driver, the vehicle speed, the angle of a steering wheel and the angular velocity of the steering wheel so as to perform auxiliary control on the return of the vehicle. Wherein an aligning torque coefficient is obtained based on the steering direction of a steering wheel and the current hand power of a driver; obtaining an initial return demand torque based on the vehicle speed, the steering wheel angle and the steering wheel angular velocity; and obtaining the return demand torque based on the return torque coefficient and the initial return demand torque. By means of the steering control method, the problem that the return speed and the return residual angle of the left side and the right side of the vehicle electro-hydraulic coupling steering system are inconsistent is solved, and the hand feeling impact of taking over of a driver in the return process can be effectively reduced.

An electronic throttle control method by which an electronic control unit (ECU) controls opening and closing of a throttle while providing a control signal on a basis of an input data signal may include calculating, via the ECU, i) an engine revolution speed deviation from a difference between an engine revolution speed and an engine revolution speed command, ii) an engine revolution acceleration on a basis of the engine revolution speed, iii) a proportional torque from a product of the engine revolution speed deviation and a proportional torque coefficient, and iv) an integral torque by multiplying an integral of a product of the engine revolution speed deviation and an integral torque coefficient by a forgetting coefficient. The method may further include providing, via the ECU, the control signal for the throttle using a sum of the proportional torque and the integral torque as a torque command value.

A method for handling brake factor of a combination vehicle (i.e., a towing vehicle and at least one trailer) includes sensing a condition indicative of air volume at trailer wheel ends, estimating an air volume for the trailer wheel ends, generating a predicted brake torque factor for the trailer(s) with a trained machine learning model utilizing the estimated air volume, and reconfiguring an electronic control unit of the combination vehicle with the predicted brake torque factor. A corresponding system for handling brake factor of a combination vehicle includes one or more sensors, a processing module, and a control module. The processing module estimates an air volume for trailer wheel ends, and generates a predicted brake torque factor for the trailer(s) with a trained machine learning model. The control module is arranged to reconfigure an ECU of the combination vehicle with the predicted brake torque factor.

The application provides a calibration device of an impact wrench, which comprises a bottom plate, a torque sensor, a support column, a top plate and a bolt simulator; the torque sensor is installed on the bottom plate; a bearing hole in the middle of the top plate is embedded with a ball bearing; the bolt simulator comprises a nut seat, a gasket chamber, a lower gasket, a butterfly spring, an upper gasket, a force sensor seat, a first pressure sensor and a bolt; the torque sensor is installed below the bolt simulator, directly measuring the torque of the locking bolt of the impact wrench; the impact wrench is directly connected with the bolt, and the transmission of the energy of the impact wrench is not affected; the ball bearing is installed in the middle of the top plate; before the bolt is locked, the bolt head is in contact with the end face of the inner ring of the ball bearing; the rolling friction of the ball bearing has little loss on the torque, thereby improving the accuracy of the determination of the locking torque. The calibration device can directly measure the torque T and the locking force F of the locking of the impact wrench on the bolt, and accurately obtain the torque coefficient K of the impact wrench.

The application discloses a kind of single-sided installation fastener torsion and measurement method of friction coefficient, not only can accurately measure the tightening torque T of single-sided installation threaded fastener in whole installation process, pre-tightening force F, threaded friction torque Tt, torsion angle and rotation speed etc., and can be obtained according to the relevant formula of torsion and tension relationship of threaded fastening torque coefficient K, threaded friction coefficient μ t , friction torque T of rotating support surface b (T b =T-T t ), support surface friction coefficient μ b And other parameters, simultaneously also solve the disassembly problem after installation is completed.

The invention provides a vehicle control method and device and a vehicle. The vehicle control method comprises the steps that whether a first wheel is in a convex road condition or not is determined; under the condition that the first wheel is in the convex road condition, a first electric drive torque coefficient is determined based on the real-time distance of the first wheel away from the convex road condition, so that the first electric drive torque coefficient is obtained in the process that the first wheel is away from the convex road condition by a target distance; the whole vehicle demand torque output by the second driving motor is dynamically transferred to the first driving motor through the first electric driving torque coefficient; wherein the target distance is determined based on the wheelbase of the vehicle and the driving distance of the first wheel on the convex road condition; and a second electric drive torque coefficient is determined based on the driving duration of the second wheel away from the convex road condition, so that the whole vehicle demand torque output by the first driving motor is dynamically transferred to the second driving motor through the second electric drive torque coefficient. In this way, rotating speed sudden change caused by wheel flying can be reduced, vehicle body shaking is reduced, and riding comfort is improved.

The utility model discloses a permanent magnet synchronous reluctance mower blade motor, and relates to the technical field of motors, the permanent magnet synchronous reluctance mower blade motor comprises a protective shell, the upper end face of the protective shell is fixedly connected with a driving motor, the interior of the protective shell is rotatably connected with a rotating frame, the rotating frame is internally provided with a blade main body, and the blade main body is fixedly connected with the driving motor. The lower end face of the protective shell is in lap joint with a fixing frame, the side face of the protective shell is fixedly connected with a discharging hopper, the driving motor is a permanent magnet synchronous reluctance motor, and the output end of the driving motor penetrates through the inner wall of the protective shell and is fixedly connected with the center of a rotating frame; the permanent magnet synchronous reluctance motor has the advantages that the permanent magnet synchronous reluctance motor can be used for flux-weakening control, the torque coefficient is high and the current is small at a low speed, the rotating speed can be improved by flux-weakening control when a high speed is needed, the operation is stable, the noise is low, the efficiency is high, the controller and the motor are integrated into a whole, and the wiring of a user is convenient.

The invention discloses an energy control method for driving energy supply equipment. The method comprises the following steps: acquiring a real-time voltage parameter of target driving energy supply equipment; according to the real-time voltage parameter and a preset voltage threshold parameter, determining a voltage abnormity judgment result corresponding to the target driving energy supply equipment; according to the voltage abnormity judgment result, energy supply output power corresponding to energy supply equipment of the energy supply object equipment is determined; determining a feedback torque coefficient according to the real-time voltage parameter, a preset voltage threshold parameter and a preset power threshold parameter; and determining feedback power corresponding to the driving working equipment according to the feedback torque coefficient and the original feedback torque of the driving working equipment. Therefore, the feedback power of the driving working equipment and the energy supply output power of the energy supply equipment can be correspondingly adjusted by fully considering the relationship among the real-time voltage parameter of the driving energy supply equipment, the preset voltage threshold value and the preset power threshold value parameter, so that the problem that the driving energy supply equipment triggers an overvoltage fault is avoided.