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Disturbance Observer-based Proportional-type Position Tracking Controller for DC Motor

Young Seok Lee, Dong Soo Kim, and Seok-Kyoon Kim*
International Journal of Control, Automation, and Systems, vol. 16, no. 5, pp.2169-2176, 2018

Abstract : "This article exhibits a nonlinear proportional-type position tracking controller for DC motors, taking the parameter and load variations into account. The proposed method makes two contributions. First, a first-order disturbance observer (DOB) is devised in order to exponentially estimate the disturbances caused by parameter and load uncertainties. Secondly, a proportional-type nonlinear position tracking controller is constructed by incorporating the resulting DOB in order to ensure two useful closed-loop properties; namely, performance recovery and offset-free properties without the tracking error integral actions. The experimental result confirms the efficacy of the proposed method where a 30-W DC motor is used with an half bridge inverter"

Keyword : DC Motor, disturbance observer, offset-free property, performance recovery, position tracking.

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