Torque compensation method and device

A torque compensation and torque value technology, which is applied in the field of torque compensation methods and devices, can solve problems such as vehicle jitter, motor speed changes, and motor speed changes, and achieve the effects of reducing jitter phenomena, suppressing excessive changes, and avoiding fluctuations

Inactive Publication Date: 2014-09-24
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

However, since the entire vehicle is a complex environment, there is a complex transfer function between the tires of the vehicle and the motor. Or the resistance decreases sharply, which will cause the motor speed to change suddenly. At this time, the torque value issued by the host

Method used

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  • Torque compensation method and device
  • Torque compensation method and device

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0032] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] see figure 1 , is a flowchart of a torque compensation...

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Abstract

The invention discloses a torque compensation method and device. The torque compensation method comprises the following steps: acquiring a change rate of a motor speed, and compensating a torque value according to the change rate of the motor speed, wherein performing negative compensation on the torque value when the change rate of the motor speed is positive and greater than or equal to a preset threshold value, and performing positive compensation on the torque value when the change rate of the motor speed is negative and has an absolute value being greater than or equal to the preset threshold value. According to the embodiment of the invention, the change rate of the motor speed is acquired and then the torque value is compensated or adjusted according to the change rate, so that the ultra-fast change of the rotating speed is restrained, the change of the torque value is accordingly reduced, the continuous fluctuation of the subsequent rotating speed is avoided, and the shaking phenomenon of a vehicle is reduced.

Description

technical field [0001] The present application relates to the technical field of motor control, in particular to a torque compensation method and device. Background technique [0002] Drive motors are an important component of electric vehicles. Electric vehicles need frequent starting, acceleration, deceleration, parking, etc. when driving, and require high torque when driving at low speeds or climbing hills, and low torque when driving at high speeds. Through the motor control, the goals of fast start, fast response, high efficiency, high torque output and high overload capacity of the motor can be achieved. [0003] In the existing motor control scheme, generally the motor controller obtains the current speed of the motor, and then digital signal processing (Digital Signal Processing, DSP) determines the final motor speed according to the motor speed obtained by the motor controller and the torque value sent by the host computer. The current value that the controller sh...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCY02T10/7258Y02T10/72
Inventor 李大伟郭侃
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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