Title :
An l1-based approach of designing optimal structures of finite precision digital controller
Author :
Xu, Weihua ; Hu, Xiehe ; Wu, Jun ; Chu, Jim
Author_Institution :
Inst. of Adv. Process Control, Zhejiang Univ., Hangzhou, China
Abstract :
In this paper, the effect of roundoff noise in digital controller is analyzed for a digital feedback control system. An l1 norm of the system is defined as the roundoff noise gain to measure the performance degradation due to finite wordlength (FWL) effect. The optimal realization of the controller is obtained via minimizing the l1 norm. A numerical example is given to illustrate the effectiveness of this new approach.
Keywords :
control system synthesis; digital control; feedback; minimisation; optimal control; roundoff errors; digital feedback control; finite precision digital controller; finite wordlength effect; optimal structures design; performance degradation; roundoff noise; Control systems; Degradation; Digital control; Error correction; Gain measurement; Laboratories; Noise measurement; Optimal control; Roundoff errors; Signal to noise ratio;
Conference_Titel :
Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on
Print_ISBN :
0-7803-7729-X
DOI :
10.1109/CCA.2003.1223533
