[1]GUO Chongbin,HAO Kuangrong,DING Yongsheng.Hemostasis mechanism based precise faulttolerant control for redundant parallel manipulator[J].CAAI Transactions on Intelligent Systems,2012,7(4):321-326.
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
7
Number of periods:
2012 4
Page number:
321-326
Column:
学术论文—智能系统
Public date:
2012-08-25
- Title:
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Hemostasis mechanism based precise faulttolerant control for redundant parallel manipulator
- Author(s):
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GUO Chongbin1; 2; HAO Kuangrong1; 2; DING Yongsheng1; 2
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1. College of Information Sciences and Technology, Donghua University, Shanghai 201620, China;
2. Engineering Research Center of Digitized Textile & Fashion Technology, Ministry of Education, Shanghai 201620, China
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- Keywords:
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redundant parallel manipulator; precise faulttolerant control; physiological hemostasis mechanism; mechanical clearance; intelligent cooperative control
- CLC:
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TP242
- DOI:
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- Abstract:
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Due to redundancy fault tolerance, redundant parallel manipulator can continue working even when meeting some local faults. However, the manipulator’s mechanical clearance cannot be eliminated, and it is hard to establish a precise mechanical clearance model. Therefore, kinematic redundancybased conventional faulttolerant methods can hardly achieve precise faulttolerant control. Considering the control characteristic and mechanical clearance of the redundant parallel manipulator, based on the physiological hemostasis control mechanism, a novel precise faulttolerant controller (PFTC) is proposed. Similar to the hemostasis mechanism, the PFTC optimizes the subchannel, meanwhile, identifies global faults and makes faulttolerant compensation. A 2DOF redundant parallel manipulator was used for actual experiment. The result shows that comparing with conventional controller, the proposed PFTC owns better control precision and faulttolerant capability.