Efficient Sensorless Speed Estimation of Electrical Servo Drives Using a Full-Order Nonsingular Terminal Sliding Mode Observer. (13th January 2021)

• Record Type: Journal Article
• Authors: Nguyen, Tan-No; Pham, Thanh-Binh; Hoang, Van-Trong; Nguyen, Tan-Tien; Nguyen, Viet-Long; Truong, Nguyen-Vu
• Other Names: Lo Schiavo Alessandro Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2021(2021)
• Publication Date: 2021-01-13
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2021/8175848
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : This paper proposes an efficient sensorless speed estimation approach for electric servo drives based on the full-order nonsingular terminal sliding mode observer (FONTSM) with the application of DC motor drives. In this method, a specific full-order terminal sliding mode manifold is utilised for the observer design which results in the elimination of the chattering and avoiding the singularity phenomenon of conventional and terminal sliding modes. Here, speed and armature back emf can be directly estimated from the relevant observer's inputs which are continuous instead of being discontinuous high-frequency "switching" signals. The efficiencies and advantages of this approach have been proven and validated in both simulation and experimental results.