Design of Real-Time and Multi-task Control System for Semi-active Suspension Based on PICOS18

Abstract

PICOS18 is a real-time, multi-task control system kernel based on OSEK/VDX protocols. An embedded controller for semi-active suspension is designed in order to improve the response rate and realize the modularization design of the control system. The structure of embedded system is designed based on PICOS18. The whole control system is divided into 9 tasks according to the data flow method, and the priority of each task is defined properly to achieve the requirement of real-time performance. Through “hard-ware in line” simulation, it is proved that the controller based on PICOS18 can improve ride com-fort ability and road holding ability at the same time.