Title :
A new design method for discrete equivalents of analog controllers
Author :
Yamaura, Hiroshi ; Tomizuka, Masayoshi
Author_Institution :
Dept. of Mech. Eng. & Sci., Tokyo Inst. of Technol., Japan
Abstract :
This paper considers the design method of discrete equivalents of analog controllers. A new design method for discrete equivalents of analog controllers is proposed. The proposed design method is an improved pre-warped bilinear transformation and is simple. The resulting digital controller does not have any extra phase-lag compared with the original analog controller in a frequency range under the maximum absolute value of poles and zeros of the analog controller, even when it is lower but comparable with the Nyquist frequency
Keywords :
Nyquist stability; control system synthesis; delays; digital control; discrete systems; poles and zeros; Nyquist frequency; analog controller discrete equivalent design method; digital controller; discrete controller design; discretization; phase-lag; poles; pre-warped bilinear transformation; zeros; Analog computers; Control systems; Delay; Design methodology; Digital control; Disk drives; Frequency; Mechanical engineering; Poles and zeros; Sampling methods;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.879549
