Efficient Sensorless Speed Estimation of Electrical Servo Drives Using a Full-Order Nonsingular Terminal Sliding Mode Observer

Mathematical Problems in Engineering - Tập 2021 - Trang 1-8 - 2021
Tan-No Nguyen1,2, Thanh-Binh Pham1,2, Van-Trong Hoang1,2, Tan Tien Nguyen3, Viet-Long Nguyen4,2, Nguyen-Vu Truong2
1Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
2Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, Hanoi, Vietnam
3HCMC University of Technology, Vietnam National University HCMC, Hochiminh City, Vietnam
4Becamex IDC Corp, Binh Duong, Vietnam

Tóm tắt

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.

Từ khóa


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Mathematical Problems in Engineering

Tập 2021

1-8

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