Control method and device for working state of motor controller, controller and electric automobile

Abstract

The invention provides a control method and device for the working state of a motor controller, the controller and an electric automobile and relates to the technical field of motor control. The control method comprises the steps that a zero-rotating-speed control signal, the current working state of the motor controller and a current strategy gear of the electric automobile are obtained; and thecurrent working state of the motor controller is adjusted according to the zero-rotating-speed control signal, the current working state and the current strategy gear. According to the scheme of the control method for the working state of the motor controller, analyzing and judging are conducted according to parameters such as the strategy gear, the rotating speed, the torque and the like of the electric automobile, precise control over the working state of the motor controller is achieved, the phenomena of sliding of the electric automobile on a slope road and heating of a motor are avoided,and the riding comfort of the output torque of the motor and the driving feeling of a driver are improved.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a method, a device, a controller and an electric vehicle for controlling the working state of a motor controller. Background technique [0002] The motor controller of the electric vehicle is used to output the corresponding torque command to the motor according to the strategic gear and the demand torque request signal output by the vehicle controller, so as to control the rotation of the motor, and the rotation of the motor drives the electric vehicle forward or backward. [0003] In order to meet the normal driving of electric vehicles under different working conditions, the motor controller needs to switch between different states according to the current working conditions. For example, when driving on a slope road, in order to avoid the sliding phenomenon of electric vehicles, it is necessary to control the target speed of the motor When the target speed o...

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a motor controller working state control method, device, controller and electric vehicle, so as to solve the problems in the prior art that the electric vehicle slides on the slope road, the motor heats up, and the smoothness of the motor output torque is poor

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