A New Torque Control Approach for Electric Power Assisted Bicycle Based on Model-Following Control

Abstract

Electric Power Assisted Bicycle (EPAC) is becoming a better means of transport that people like and pursue because of its environmental, healthy, convenient and economical characteristics. Compared to the conventional bicycle, EPAC reduces the pedal force and relieves the fatigue of the rider. Nowadays, there are few researches on the torque control approach adaptive to road grade and load for EPAC. Therefore, this paper proposes a new torque control approach based on Model-Following Control(MFC), which can eliminate the impact of the road grade and the load by processing the signal of speed and trample force on the bicycle. Accordingly, the torque of motor can be adjusted to achieve the optimal effect of assisted-power in real-time. In result, the rider will obtain a better riding experience. The simulation and analysis demonstrate the effectiveness and performance of the proposed torque control approach.