controller for loom warp tension control

 

 

SUN Zhe, WU Zhen yu, WU Chuan yu, JIN Ying zi

 

(Faculty of Mechanical Engineering & Automation, Zhejiang SciTech University, Hangzhou 310018, China)

 

 

Abstract: Aiming at warp tension control of a let off and take up system of a loom, dynamical plant models and effective control techniques for warp tension control were investigated. The influence of periodic shedding motions was analyzed and a sinusoidal signal was utilized to simulate the external disturbance of the system. An adaptive sliding mode controller was designed for warp tension control, of which the sliding mode control method was utilized to handle parametric uncertainties and the adaptation method was utilized to estimate the external disturbance. A PID controller and a conventional sliding mode controller were proposed for comparison. The results indicate that the proposed adaptive sliding mode controller possesses strong robustness and excellent control performance due to its capability of handling the parametric uncertainties existing in the plant model and compensating for the external disturbance of the system effectively.

 

Key words: loom; let off and take up system; warp tension; adaptive sliding mode control