Self-calibration control method of encoder, and tricycle driving system

Abstract

The invention discloses a self-calibration control method of an encoder, and a tricycle driving system. The self-calibration control method comprises the following operation steps: A10) powering on amotor provided with the encoder, and enabling the motor to be in a stable constant-speed rotating state through an external force; A20) adjusting the original sine and cosine signals of an induction coil in the encoder, and adjusting the output amplitude of the encoder based on the original sine and cosine signals to make the original sine and cosine signals of the encoder in each period reach a unified output amplitude; and A30) processing and calculating the output amplitude signal, and sending the processed and calculated output amplitude signal to a drive as a zero calibration signal of the rotor position. Accurate detection of the real-time position of a rotor can be realized, and finally the accurate driving effect of the tricycle driving system is ensured.

Description

technical field [0001] The invention belongs to the drive control technology of electric vehicles, and in particular relates to a self-calibration control method of an encoder, and also relates to a tricycle drive system applying the self-calibration control method. Background technique [0002] Due to its better loading capacity, tricycles have their own specific advantages over two-wheeled vehicles, so they have a greater market application demand. However, the driving technology adopted by the tricycle has been using the traditional motor driving technology, and there is almost no real innovation of the driving technology of the tricycle. Driven by square wave control, among them, the structure of the Hall sensor is prone to damage after being used for a long time in the heat-generating environment of the winding, resulting in a high failure rate of the tricycle. At the same time, the existing control method has poor speed-up performance and motor work efficiency Low cos...

AI Technical Summary

Problems solved by technology

However, the driving technology adopted by the tricycle has been using the traditional motor driving technology, and there has been almost no disclosure of the innovative driving technology of the tricycle. Specifically, the Hall sensor installed on the winding is used to detect the rotor position. Driven by square wave control, among them, the structure of the Hall sensor is prone to damage after being used for a long time in the heat-generating environment of the winding, resulting in a high failure rate of the tricycle. At the same time, the existing control method has poor speed-up performance and motor work efficiency low cost high

[0003] The applicant also noticed that the tricycle usually needs to have better loading capacity, and also has the function of using the two-wheeled vehicle, and its applied load range is very wide. Therefore, when the tricycle is used, due to its corresponding load range And uncertain, so the required tricycle motor needs to have excellent speed-up performance when driving. The existing tricycle drive control scheme has been relatively backward compared with the technological development in recent years.

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