Technical Paper
A Precise Clamping Force Control Strategy for Electro-Mechanical Braking System Based on Nonlinear Characteristics Compensation
2024-04-09
2024-01-2322
Electro-Mechanical Braking (EMB) system, which abandons the traditional hydraulic device and realizes complete human-vehicle decoupling, could meet the requirements of the future intelligent driving technology for high-quality braking control. However, there are significant nonlinear characteristics such as obstacle of mechanical friction, system variable stiffness, etc. existing within EMB, and these make the accuracy of the clamping force control decline. This paper proposes a precise clamping force control strategy for EMB based on nonlinear characteristics compensation. First, we systematically analyze the working principle of EMB, and establish the mechanical friction model including static friction, coulomb friction, and viscous friction. At the same time, some typical experiments are designed to identify internal parameters of mechanical friction model with least square method.