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ZHONG Tianyu
WANG Qingfeng
LI Yanmin
State Key Laboratory of Fluid Power
Transmission and Control,
Zhejiang University,
Hangzhou 310027, China
GONG Fangyou
No.715 Research Institute,
China Shipbuilding Industry Corporation, Hangzhou 310012, China
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ELECTRO-HYDRAULIC COMPOUND CONTROL
METHOD AND CHARACTE- RISTIC OF CONTROL FOR TENSION SYSTEM WITH
HIGH INERTIA LOADS*
Abstract:
Based on the pressure regulation circuit adopting electro-hydraulic proportional relief valve to control tension, a new type of electro-hydraulic compound control circuit with throttle control unit is presented, which can obtain optimal dynamic damping ratio through real-time altering pressure-flow gain of the throttle control unit, improve the dynamic characteristic of tension follow-up control for the tension system with high inertia loads. Moreover, the characteristic when the cable linear velocity variation causes change of tension is investigated, and a compound control strategy is proposed. The theoretical analysis and experimental results show that the electro-hydraulic compound control circuit is effective and the characteristic of the compound control strategy is satisfactory.
Key words:
High inertia loads Tension control system Compound control strategy |