Nonlinear Discrete-Time Sliding Mode Observations with Application to a Three-Phase Current Motor

摘要：

This paper addresses the problems of discrete-time state and unknown input estimation for continuous-time nonlinear systems with multiple unknown inputs. The conditions for the observability of unknown inputs w.r.t. outputs are discussed. The novelty lies in the formulation of multiple sliding modes estimator for the states that are directly influenced by unknown inputs, which cannot be decoupled by nonlinear transformation. This framework allows for the estimation of unknown inputs from the multiple sliding modes. Existence of discrete-time sliding mode is guaranteed and the relation between the boundary layer thickness and the sliding mode gain design that will eliminate chattering and the boundedness conditions are obtained.

作者: K.C.VELUVOLU Y.C.SOH W.CAO Z.Y.LIU

作者单位: Nanyang Technological University, Singapore Harbin Institute of Technology, China

会议类型: 国际会议

会议名称: 2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)

会议地点: 哈尔滨

会议语种:英文

在线出版日期: 2007-05-23（万方平台首次上网日期，不代表论文的发表时间）