Suppression of Limit Cycles in Servo Systems Using Gain Limit Compensator

Autor:	Yi-De Chen, Fu-Chu Chou, Pi-Cheng Tung, Chia-Hsien Liao
Rok vydání:	2008
Předmět:	Computer science Applied Mathematics Servomechanism Feedback loop Computer Graphics and Computer-Aided Design law.invention Term (time) Compensation (engineering) Reduction (complexity) Control theory law Signal Processing Range (statistics) Limit (mathematics) Electrical and Electronic Engineering
Zdroj:	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. :3293-3296
ISSN:	1745-1337 0916-8508
DOI:	10.1093/ietfec/e91-a.11.3293
Popis:	In high-precision positioning systems, the limit cycles induced by friction effects result in a significant reduction in the positioning performance; particularly when the servo system utilizes a high gain controller. Accordingly, the current study presents a compensation scheme consisting of a dead-zone function and an integral term to limit the equivalent gain of unspecified controllers to the stable range. The proposed compensation scheme not only ensures that the feedback loop system remains stable, but also provides a simple and effective mechanism for preventing the users from inadvertently setting control gains which degrade the positioning performance of the system. The simulation results confirm the ability of the gain limit compensation scheme to suppress the effects of limit cycles and therefore demonstrate its feasibility for practical applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1df5dd136b400c54ac2e630046fca871 https://doi.org/10.1093/ietfec/e91-a.11.3293 Zobrazit plný text záznamu