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Motor control method, device and equipment and electric automobile

A technology of motor control and motor speed, which is applied in the field of motor control methods, devices, and electric vehicles, and can solve problems such as vehicle vibration

Active Publication Date: 2020-10-30
BEIJING ELECTRIC VEHICLE
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  • 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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  • Motor control method, device and equipment and electric automobile

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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] like 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 first n...

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Abstract

The invention provides a motor control method, device and equipment and an electric automobile, whichrelate to the technical field of automobiles. The motor control method comprises the steps that when anautomobile runs at a variable speed, the current rotating speed of a motor at the current moment is obtained;a first rotating speed change rate of the motor in a current sampling period is calculated according to the current rotating speed; whether the current rotating speed of the motor fluctuates or not is judged according to the first rotating speed change rate and a second rotating speed change rate of the rotating speed change of the motor in a preset sampling period before the current moment; if the current rotating speed of the motor is determined to fluctuate, a compensation torquevalue of the motor is calculated; and an actual torque value of the motor is determined according to the current output torque value of the motor and the compensation torque value. According to the embodiment of the invention, the compensation torque value is obtained by comparing the rotating speed change rate, and the actual output torque of the motor is compensated in real time, so that the purposes of inhibiting the shaking of the whole automobile and improving the driving comfort are achieved.

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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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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