Guaranteed cost control for an overhead crane with practical constraints: Fuzzy descriptor system approach
Guaranteed cost control for an overhead crane with practical constraints: Fuzzy descriptor system approach
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DOI：
10.1016/j.engappai.2009.03.005
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发表时间：
2009-06-01
影响因子：
8
通讯作者：
Chang, Chun-Lung
中科院分区：
文献类型：
--
作者：
Chen, Ying-Jen;Wang, Wen-June;Chang, Chun-Lung
针对桥式起重机的实际控制问题，设计了一种模糊控制器，使小车精确到达目的地，负载摆角趋近于零，输入能量和状态能量最小。此外，还考虑并满足桥式起重机运行的约束条件。这些约束是当起重机移动时，摆动角度必须小，摆动速度必须慢，并且移动力有限。采用模糊广义系统来描述桥式起重机的动态特性，并针对模糊广义系统提出了一种保性能模糊控制设计方法。此外，本研究亦说明为何选用模糊广义系统而非传统的T-S模糊系统作为桥式起重机的模型。仿真结果验证了所提出的控制方案的有效性。(C)2009爱思唯尔有限公司保留所有权利。
This study considers a practical overhead crane control problem of designing a fuzzy control to ensure that the trolley arrives precisely at its destination; the load swing angle approaches to zero, and the energy of input and states is minimized. Furthermore, the constraints for the overhead crane operation are also considered and satisfied. Those constraints are that when the crane is moving, the swing angle has to be small; the swing speed has to be slow, and the moving force is limited. The fuzzy descriptor system is chosen to represent the dynamics of the overhead crane, and a guaranteed cost fuzzy control design is proposed for the fuzzy descriptor system. Moreover, this study also illustrates why the fuzzy descriptor system instead of traditional T-S fuzzy system is selected here as the model of the overhead crane. The simulation results demonstrate the effectiveness of the proposed control design scheme. (C) 2009 Elsevier Ltd. All rights reserved.