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YAO Jianjun
School of Mechanical and
Electrical Engineering,
Harbin Institute of Technology,
Harbin 150001, China
WANG Xiancheng
Department of Electromechanical
Engineering,
Ningbo Institute of Technology,
Zhejiang University,
Ningbo 315100, China
WU Zhenshun
HAN Junwei
School of
Mechanical and
Electrical Engineering,
Harbin Institute of Technology,
Harbin 150001, China |
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VARIABLE STRUCTURE CONTROL
APPLIED IN ELECTRO-HYDRAULIC
SERVO SYSTEM WITH ANN
Abstract:
The variable structure control (VSC) theory is applied to the electro-hydraulic servo system here. The VSC control law is achieved using Lyapunov method and pole placement. To eliminate the chattering phenomena, a saturation function is adopted. The proposed VSC approach is fairly robust to load disturbance and system parameter variation. Since the distortion including phase lag and amplitude attenuation occurs in the system sinusoid response, the amplitude and phase control (APC) algorithm, based on Adaline neural network and using LMS algorithm, is developed for distortion cancellation. The APC controller is simple and can on-line adjust, thus it gives accurate tracking.
Key words:
Variable structure control (VSC) Adaline neural network Pole placement LMS algorithm Amplitude and phase control (APC)
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