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Robust converter-fed motor control based on active rejection of multiple disturbances

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Document pages: 30 pages

Abstract: In this work, an advanced motion controller is proposed for buckconverter-fed DC motor systems. The design is based on an idea of activedisturbance rejection control (ADRC) with its key component being a customobserver capable of reconstructing various types of disturbances (includingcomplex, harmonic signals). A special formulation of the proposed design allowsthe control action to be expressed in a concise and practically appealing formreducing its implementation requirements. The obtained experimental resultsshow increased performance of the introduced approach over conventionally usedmethods in tracking precision and disturbance rejection, while keeping similarlevel of energy consumption. A stability analysis using theory of singularperturbation further supports the validity of proposed control approach.

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