Cascade Control of PM DC Drives Via Second-Order Sliding-Mode Technique
Pisano, A.; Davila, A.; Fridman, L.; Usai, E.
Industrial Electronics, IEEE Transactions on
Volume 55, Issue 11, Nov. 2008 Page(s):3846 - 3854
Digital Object Identifier   10.1109/TIE.2008.2002715
Summary:This paper presents a novel scheme for the speed/position control of permanent-magnet (PM) DC motor drives. A cascade-control scheme, based on multiple instances of a second-order sliding-mode-control (2-SMC) algorithm, is suggested, which provides accurate tracking performance under large uncertainty about the motor and load parameters. The overall control scheme is composed of three main blocks: (1) a 2-SMC-based velocity observer which uses only position measurements; (2) a 2-SMC-based velocity control loop that provides a reference command current; and 3) a 2-SMC-based current control loop generating the reference voltage. The proposed scheme has been implemented and tested experimentally on a commercial PM DC motor drive. The experimental results confirm the precise and robust performance and the ease of tuning and implementation, featured by the proposed scheme.

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