Sensorless torque power-assisted driving device of electric power-assisted bicycle

Abstract

The sensorless torque boosting driving device comprises a cylindrical shell, a stator disc and a rotor disc which are coaxially arranged with a middle shaft of the bicycle, the left side of the cylindrical shell is rotationally connected with the middle shaft, the stator disc is fixedly arranged on the left side in the cylindrical shell, and the rotor disc is arranged on the right side in the cylindrical shell; the inner circle of the rotor disc is in transmission connection with the outer circle of the center shaft through a spline structure, an air gap is formed between the right side of the stator disc and the left side of the rotor disc, and an air gap size adjusting mechanism is arranged between the center shaft and the rotor disc. The device is scientific in principle, small in size, compact in structure and convenient to install, the external force applied to the pedal by a rider is directly and accurately converted into the air gap of the disc type motor, so that the assisting force can be rapidly and accurately adjusted when different riding external forces are applied, and the device can be applied to various application occasions of bicycles and is not influenced by road conditions.

Description

technical field [0001] The invention belongs to the technical field of electric power-assisted bicycles, and in particular relates to a sensorless torque power-assisted driving device for electric power-assisted bicycles. Background technique [0002] Electric power-assisted bicycle is a new type of bicycle, which uses electric energy as a source of auxiliary driving energy to assist riding, and realizes a new type of transportation that integrates human riding and electric power assistance. In the process of riding, when encountering uphill or needing to rest, people hope to use electric power assistance to reduce the fatigue of riding. Therefore, timely sensing whether assistance is needed is the focus of research in the field of electric bicycles. In the prior art, torque is used. The sensor monitors the riding speed and is supplemented by an intelligent control system. If the riding speed is higher than a certain limit, no assistance is provided, and if the riding speed ...

AI Technical Summary

Problems solved by technology

This method collects the signal of the torque sensor, and then calculates and outputs the power boost signal through the controller. This power boost control method has disadvantages such as complex structure, high cost, and the transmission of the analog signal collected by the torque sensor is affected by stability and strength.

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