无模型自适应控制的电液激振台的半实物仿真

由于电液力控伺服系统具有高阶非线性、不确定、时滞及强耦合等特性,所以实际中难以获得精确的数学模型.为了解决参数的不确定性和时滞性对电液力控伺服系统的影响,本文设计了一种无模型自适应控制器.利用Simulink/Amesim对该电液力控伺服系统进行了联合仿真研究;并通过半实物仿真软件DSPACE验证控制方案的正确性、仿真结果表明,与传统PID调节器相比,无模型自适应控制具有良好的动态性能和鲁棒性,并能够很好地消除试件上的输出误差,提高输出力的的精度,使系统具有较好的适应性.

Semi-physical Experiments Simulation of Electro-hydraulic Vibrating Platform Based on MFA Control

Due to non-linear, time-varying uncertainty, Strong coupling of the actual electro-hydraulic servo system, an accurate mathematical model is difficult to obtain. In order to solve impacts on the electrical hydraulic servo force control system, this article designs the MFA controller. Then a simulation research is made to the electric hy- draulic servo control system by using Simulink with Amesim, proving its correctness through the semi-physical ex- periments of DSPACE. The resuhs of simulation research show that compared with traditional PID controller, the MFA controller for the system has a good dynamic performance and robustness and it can eliminate the output error of the specimen, improve the accuracy of the output power and make a better adaptability for the system.