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A study on position servo control systems by frequency-locked technique

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1 Author(s)
Guan-Chyun Hsieh ; Dept. of Electron. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

A frequency-pumped controller (FPC) is presented that processes the position servomechanism by the frequency-locked technique. With the proposed FPC, a position/voltage (P/V) transducer, and a voltage-controlled oscillator (VCO), a frequency-locked position servo (FLPS) control system is established. Mathematical models for the FPC and for the FLPS are constructed, and their stability criteria for in-lock and for out-of-lock cases, respectively, are derived. Computer simulation and experimental results confirm the theoretical prediction that the proposed FLPS can provide real-time control, good stability, higher resolution, and higher precision

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Industrial Electronics, IEEE Transactions on  (Volume:36 ,  Issue: 3 )