Abstract
Incremental-type encoder is widely used for speed detection in servo system. However, the speed controller of the system usually becomes unstable at low speed range using average speed estimation method. An instantaneous speed estimation scheme for low speed control of permanent magnet synchronous motor is proposed. The speed estimation adopts a full order state observer to calculate feedback speed. The method can achieve good response because it is possible to detect the speed exactly without detection dead time. The observer design considerations for application are analyzed. Furthermore, inertia identification based on recursive extended least square algorithm is presented to reduce sensitivity of the speed estimation. Experimental results show that low speed control performance using the instantaneous speed estimation with inertia identification is superior to that of conventional one.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
