Adaptive fuzzy control for MIMO nonlinear systems with unknown dead-zone
Adaptive fuzzy control for MIMO nonlinear systems with unknown dead-zone
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DOI：
10.1109/is.2008.4670425
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发表时间：
2008-11
期刊：
影响因子：
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通讯作者：
A. Boulkroune;M. M'Saad;Mohamed Tadjine;M. Farza
中科院分区：
文献类型：
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作者：
A. Boulkroune;M. M'Saad;Mohamed Tadjine;M. Farza
研究了一类控制增益矩阵符号未知(即控制方向未知)和死区未知的不确定多输入多输出(MIMO)非线性系统的模糊自适应控制系统。为了处理控制增益矩阵的未知符号，采用了Nussbaum型函数。在模糊自适应控制方案的设计中，充分利用了控制增益矩阵的分解性质。为了补偿死区的影响，我们既不需要知道死区参数，也不需要构造死区参数的逆。仿真结果验证了该方法的有效性。
In this paper, a fuzzy adaptive control system is investigated for a class of uncertain multi-input multi-output (MIMO) nonlinear systems with both unknown dead-zone and unknown sign of the control gain matrix (i.e. unknown control direction). To deal with the unknown sign of the control gain matrix, the Nussbaum-type function is used. In the designing of the fuzzy adaptive control scheme, we will fully exploit a decomposition property of the control gain matrix. To compensate the effects of the dead-zone, we require neither the knowledge of dead-zone parameters nor the construction of its inverse. Simulation results demonstrate the effectiveness of the approach.