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Fuzzy autotuning scheme based on α-parameter ultimate sensitivity method for AC speed servo system

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3 Author(s)
Yoshitsugu, J. ; Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Japan ; Inoue, K. ; Nakaoka, M.

This paper presents an advanced method to improve the speed response characteristics of an AC servomotor drive system with mechanically resonant loads without any data-based experiences. Mechanical resonance and antiresonance are both effectively suppressed on the basis of a load speed feedback approach for the AC servo motion system. A novel α-parameter ultimate sensitivity method is applied to obtain a stable compensation between the proportional plus integral controller gains and load speed feedback gain. The fuzzy reasoning processing for this system is introduced for autotuning of the α parameter. The effectiveness of the proposed autotuning control scheme in the AC speed servo system is verified in terms of computer simulation results

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Industry Applications, IEEE Transactions on  (Volume:36 ,  Issue: 2 )