摘要
在分析了汽车非线性液压转向系统工作原理的基础上,建立了液压转向系统的数学模型,设计了控制系统的模糊控制算法和模糊自适应PID控制算法。通过考虑汽车转向系统的各种非线性因素,在AMESim和Simulink中建立了与实际线控液压转向系统相吻合的联合仿真模型,通过仿真计算出油缸在不同控制策略下的响应速度。结果表明,在相同的输入信号下,模糊自适应PID控制与模糊控制相比,其响应速度大约提高了0.3 s,与无控制策略相比,其响应速度大约提高了1 s左右。
Based on the working principle of automobile nonlinear hydraulic steering system,the mathematical model of the hydraulic steering system is established by using the fuzzy control algorithm and fuzzy adaptive PID control algorithm. By considering the nonlinear factors of automobile steering system,we establish the united simulation model that in conformity with the actual wire control hydraulic steering system to calculate the response speed of the cylinder under different control strategies. The results show that under the same input signal,compared with that of fuzzy control,the response speed of fuzzy adaptive PID control,increases about 0. 3 s; compared with that of no control strategy,the response speed increases about 1 s.
出处
《液压与气动》
北大核心
2015年第5期89-92,112,共5页
Chinese Hydraulics & Pneumatics
基金
内蒙古自治区高等学校科学技术研究项目(NJZY12109)
