Application of a Self-recurrent Wavelet Neural Network in the Modeling and Control of an AC Servo System
To control the nonlinearity, widespread variations in loads and time varying characteristic of the high power ac servo system, the modeling and control techniques are studied here. A self-recurrent wavelet neural network (SRWNN) modeling scheme is proposed, which successfully addresses the issue of...
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| Veröffentlicht in: | Sensors & transducers 2014-05, Vol.171 (5), p.141-141 |
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| container_title | Sensors & transducers |
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| creator | Hou, Run Min Hou, Yuan Long Liu, Rong Zhong Yang, Guo Lai Gao, Qiang |
| description | To control the nonlinearity, widespread variations in loads and time varying characteristic of the high power ac servo system, the modeling and control techniques are studied here. A self-recurrent wavelet neural network (SRWNN) modeling scheme is proposed, which successfully addresses the issue of the traditional wavelet neural network easily falling into local optimum, and significantly improves the network approximation capability and convergence rate. The control scheme of a SRWNN based on fuzzy compensation is expected. Gradient information is provided in real time for the controller, by using a SRWNN identifier, so as to ensure that the learning and adjusting function of the controller of the SRWNN operate well, and fuzzy compensation control is applied to improve rapidity and accuracy of the entire system. Then the Lyapunov function is utilized to judge the stability of the system. The experimental analysis and comparisons with other modeling and control methods, it is clearly shown that, the validities of the proposed modeling scheme and control scheme are effective. |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Compensation Control algorithms Control systems Controllers Fuzzy Fuzzy set theory Information storage Mathematical models Neural networks Servocontrol Servomechanisms Wavelet |
| title | Application of a Self-recurrent Wavelet Neural Network in the Modeling and Control of an AC Servo System |
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