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		Yong YANG,An LUO,Karl-Erik RYDBERG.[en_title][J].Control Theory and Technology,2006,4(4):327~330.[Copy]

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YongYANG,AnLUO,Karl-ErikRYDBERG
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Received:November 17, 2005Revised:June 19, 2006

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PI control based on fuzzy set-point weighting tracking for hydraulic crane boom system

Yong YANG, An LUO, Karl-Erik RYDBERG

(College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha Hunan 410076, China; College of Information Science and Engineering, Central South University, Changsha Hunan 410083, China;College of Electric and Information Engineering, Hunan University, Changsha Hunan 410082, China;Department of Mechanical Engineering, Linkping University, Linkping SE-581 83, Sweden)

Abstract:

A PI control strategy based on fuzzy set-point weighting following was proposed for the active damp- ing control of a hydraulic crane boom system (HCBS). Two valve-controlled PI controllers, which include a proportional feedforward controller based on fuzzy set-point weighting following and a limited semi-integrator(LSI), are designed re- spectively. LSI is used to limit output signal and to prevent wind up at the low frequency of the spectrum . By using a range camera and an electronic feedback control, the tip damping on the HCBS can be adjusted artificially. A collaborative control simulation technique of HOPSAN and MATLAB/SIMULINK is applied to the controller design. Simulation results show that the proposed PI control system has less overshoot as well as faster response. The tip damping on the HCBS during operation is improved.

Key words: PI control Fuzzy set-point weighting (FSPW) Limited semi-integrator(LSI) Active damping Collabo- rative control simulation Range camera Hydraulic crane boom system (HCBS)