Time-varying sliding-coefficient-based decoupled terminal sliding-mode control for a class of fourth-order systems

2014 ◽  
Vol 53 (4) ◽  
pp. 1044-1053 ◽  
Author(s):  
Husnu Bayramoglu ◽  
Hasan Komurcugil
2013 ◽  
Vol 33 (1) ◽  
pp. 222-225
Author(s):  
Guoyong HUANG ◽  
Jichen HU ◽  
Jiande WU ◽  
Yugang FAN ◽  
Xiaodong WANG

2014 ◽  
Vol 511-512 ◽  
pp. 1027-1031
Author(s):  
Zhen Xin He ◽  
Chun Tong Liu ◽  
Xian Xiang Huang ◽  
Bing Li

Parameters of theodolite measuring motor will vary with duty conditions bringing about aiming control system chaotic, which is harmful for the aiming system and the aiming result. In order to be close to reality, considering that the aiming system is under time-varying load and inside disturbances, the dynamic model was established and analyzed. The existence of chaos was proved. Due to terminal sliding control with good robustness, fast dynamic response, finite time convergence and high tracking precision, PI terminal sliding structure and control strategy were given, and the system stability was analyzed. The chaotic orbits of aiming motor system were stabilized to arbitrary chosen fixed points and periodic orbits by means of sliding mode method. Simulation results show that PI terminal sliding mode control can realize the stability and accuracy of aiming motor control system, and overcome the negative influence of the chaos for the aiming system.


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