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A motor control method, device, equipment and electric vehicle

A motor control and vehicle technology, applied in the fields of electric vehicles, devices, and motor control methods, can solve problems such as vehicle jitter, and achieve the effect of improving reliability

Active Publication Date: 2021-08-10
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a motor control method, device, equipment, and electric vehicle to solve the problem of vehicle shaking during acceleration or braking transitions

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  • A motor control method, device, equipment and electric vehicle
  • A motor control method, device, equipment and electric vehicle

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] The invention aims at the problem that the vehicle shakes during the acceleration or braking conversion process, and provides a motor control method, device, equipment and electric vehicle.

[0042] Such as figure 1 As shown, the embodiment of the present invention provides a motor control method, including:

[0043] Step 11, when the vehicle is running at a variable speed, obtain the current rotational speed of the motor at the current moment;

[0044] It should be noted that when the vehicle is running at variable speeds, such as accelerating, decelerating, or in the process of accelerating and braking transitions, in order to prevent the vehicle from shaking and avoid affecting the driving comfort of the vehicle due to shaking, it is firs...

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Abstract

The invention provides a motor control method, device, equipment and an electric vehicle, and relates to the technical field of vehicles. The motor control method includes: when the vehicle is running at a variable speed, acquiring the current speed of the motor at the current moment; according to the current speed, calculating a first speed change rate of the motor in the current sampling period; according to the first The speed change rate and the second speed change rate of the motor speed change in the preset sampling period before the current moment are used to determine whether the current speed of the motor fluctuates; if it is determined that the current speed of the motor fluctuates, calculate The compensation torque value of the motor; determine the actual torque value of the motor according to the current output torque value of the motor and the compensation torque value. In the embodiment of the present invention, the compensation torque value is obtained by comparing the rate of change of the rotational speed, and the actual output torque of the motor is compensated in real time, thereby achieving the purpose of suppressing the vibration of the whole vehicle and improving driving comfort.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a motor control method, device, equipment and an electric vehicle. Background technique [0002] During the acceleration or braking transition process of the car, due to the sudden change of the motor torque and the change of the mechanical transmission gap, the speed of the whole vehicle will suddenly change and oscillate, which will cause the whole vehicle to vibrate, and the resulting frustration will greatly reduce the driving experience of passengers. comfort. [0003] Therefore, the urgent problem to be solved at present is to suppress the shaking of the whole vehicle during acceleration or braking transition, so as to improve the driving experience of the vehicle. Contents of the invention [0004] Embodiments of the present invention provide a motor control method, device, equipment and an electric vehicle, which are used to solve the problem that the vehicle shake...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/421B60L2240/423Y02T10/72
Inventor 钟彬徐亮刘玉辉高洋
Owner BEIJING ELECTRIC VEHICLE
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