摘要
以电液位置伺服系统作为研究对象,建立具有一般性的系统非线性数学模型。基于此模型,提出一种基于广义预测的控制策略,采用随机梯度估计法在线估计控制器模型参数,避免在线求解Diophantine方程,减少在线计算时间。该控制方法具有计算量小、实时性高的特点。并通过仿真实验验证了此方法的有效性。
Taking electro-hydraulic position servo system as an example, an unified nonlinear mathematic model of this system was built. A control approach based on generalized predictive control was put forward which adopted stochastic gradient estimation algorithm to estimate parameters of the controller online. On-line solving Diophantine equation was avoided and on-line calculation time was reduced. The computing work of this control approach was decreased and real-time performance was good. The simulation results demonstrate the effectiveness of this method.
出处
《机床与液压》
北大核心
2010年第9期6-9,共4页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(50805041)
关键词
广义预测控制
电液伺服系统
鲁棒性
非线性系统
Generalized predictive control
Electro-hydraulic servo system
Robustness
Nonlinear systems
