摘要
研究了一类δ算子不确定系统滑模变结构控制综合问题.给出了δ算子系统的理想趋近律,分析了采用理想趋近律与指数趋近律设计滑模控制器的异同.所设计的滑模控制将连续时间系统和离散时间系统统一到δ算子系统,有限时间内可达切换面,有效地削弱了抖振.仿真实例验证了该方法的可行性和有效性.
The synthesis problem of sliding mode variable structure control is investigated for a class ofuncertain Delta operator system with internal parameter perturbation and external disturbance. The differences and similarities of designing sliding mode controller based on two types of idealreaching law and exponential reaching law. The pro-posed methodsbring previous related conclusions of continuous time system and discrete-time system into unified delta operator system. Slidingmode control system designed by employing two types of reaching lawsnot only can reach the region of the switching surface in finite time,but also decrease the system chattering effectively. The simulation results illustrate the the feasibility and validity ofthe proposed approaches.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2010年第6期489-494,共6页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
国家自然科学基金(60974025)
关键词
Δ算子
滑模控制
趋近律
抖振
Delta operator
sliding mode
reaching law
chattering
