H_∞ two-block design of servo systems  

作　　者：王广雄 王新生 

出　　处：《Journal of Harbin Institute of Technology(New Series)》2002年第2期142-144,共3页哈尔滨工业大学学报（英文版）

基　　金：SponsoredbytheSpecialFundofChinaforPh .D .InstructorsinUniversities(GrantNo .960 2 13 14 )

摘　　要：The usual mixed sensitivity H ∞ design is not suitable for servo design, because there exist pole/zero cancellations and the resulting control law will include a pure differentiation factor. This paper presents an alternative design, i.e. the PS/T two block design. It is proved that in the PS/T problem there is no cancellation of the plant poles by the controller. The PS/T problem can take full advantage of the two block design approach: simplicity and intuition. And the use of PS in design is more practical for it represents the system’s disturbance rejection performance. The PS/T two block design details are discussed and illustrated by an example. The results of this paper can also be used for MIMO systems.The usual mixed sensitivity H ∞ design is not suitable for servo design, because there exist pole/zero cancellations and the resulting control law will include a pure differentiation factor. This paper presents an alternative design, i.e. the PS/T two block design. It is proved that in the PS/T problem there is no cancellation of the plant poles by the controller. The PS/T problem can take full advantage of the two block design approach: simplicity and intuition. And the use of PS in design is more practical for it represents the system's disturbance rejection performance. The PS/T two block design details are discussed and illustrated by an example. The results of this paper can also be used for MIMO systems.

关 键 词：H∞ design pole/zero CANCELLATION PS/T PROBLEM SERVO system 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]