Title :
An improved self-adaptive tracking differentiator
Author :
Qiao, Guohui ; Sun, Minglei ; Zhang, Rong ; Zong, Guanghua ; Li, Shouzhong
Author_Institution :
Sch. of Mech. Eng. & Autom., Beijing Univ. of Aeronaut. & Astronaut., Beijing, China
Abstract :
The performance of traditional tracking differentiator (TD) will decline when it tracks great changing signals. This paper presents a novel self-adaptive second-order TD which can automatically adjust its tracking rate based on the feedback of differential signals. The result of simulation and experiment showed that this algorithm could effectively restrain oscillations when input signals changed in a low rate, and guarantee a small phase shift when the input signals varied rapidly.
Keywords :
adaptive control; nonlinear control systems; position control; autodisturbances rejection controller; feedback; nonlinear tracking differentiator; restrain oscillations; self-adaptive second-order tracking differentiator; Automation; Control theory; Feedback; Mechanical engineering; Pollution; Process design; Signal design; Signal processing; Signal processing algorithms; Sun; Uncertain model; nonlinear tracking differentiator; self-adaptive control; switching function;
Conference_Titel :
Information and Automation, 2009. ICIA '09. International Conference on
Conference_Location :
Zhuhai, Macau
Print_ISBN :
978-1-4244-3607-1
Electronic_ISBN :
978-1-4244-3608-8
DOI :
10.1109/ICINFA.2009.5205060
