摘要
在考虑高速开关电磁阀饱和和死区效应等因素的基础上,联合AMESim与Simulink仿真软件建立电子液压制动(electro-hydraulic brake system,EHB)液压系统仿真模型。通过系统辨识获得了预测模型,在广义预测控制理论基础上设计了制动压力控制器。为了验证该控制器的工作性能,进行了基于EHB系统的轮缸压力控制仿真实验和汽车防抱死制动仿真实验。结果表明:在系统参数时变的情况下应用该算法是可行有效的,该控制算法较一般的PID控制进一步提高了汽车的制动性能。
In order to set up a hydraulic model of EHB system precisely, AMESim and Simulink were both used considering the dead zone and saturation properties of high-- speed solenoid. Then a predictive model was developed by system identification. A hydraulic controller was designed based on GPC theory. The simulations of wheel cylinder pressure control test and anti--lock brake tests show that the GPC controller is feasible and effective even when the parameters of hydraulic system are time--varying. Compared to tradition- al PID controller, the designed controller can further improve the brake performance.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2011年第23期2887-2892,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51175135
51075112)
关键词
广义预测控制
电子液压制动系统
联合仿真
系统辨识
generalized predictive control （GPC）
electro -- hydraulic brake （EHB） system
co -- simula- tion
system identification
