The Research of Frequency Characteristics of Tracking Differentiator

Abstract:

Function fhan() and tracking differentiator are important components of Active Disturbance Rejection Control Technique. It is pointed out that function fhan() is not the optimal control synthesis function of discrete system, but function fsun() is. Amplitude and phase frequency characteristic curves of tracking differentiators constructed respectively by function fhan() and fsun() are given by computer simulations. The account formula about turning frequency is also given. Influence of parameter variation on tracking differentiator frequency characteristic is analyszed. The conclusion of this paper is supplement and perfection for the theory of tracking differentiator in Active Disturbance Rejection Control Technique, and it can promote rapid development of Active Disturbance Rejection Control Technique.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 1474-1478
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.1474
• Online since: June 2012
• Authors: Fei Meng, Jien Yang, Peng Song Yang, Biao Sun
• Keywords: Active Disturbance Rejection Control Technique, Frequency Characteristic, Optimal Control Synthesis Function, Tracking Differentiator

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