High-precision Position Control of Moving Coil motor and Flexure mechanism Using Quantized Current Regulator and Disturbance Observer

• Main Authors: Feng Hsieh, 謝豐
• Other Authors: S.H. Yu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/89433806804076656115

碩士 === 國立中山大學 === 電機工程學系研究所 === 98 === The position control has played an important role in high-tech industries. For example, we hope the control performance fast and precisely in the biomedical industry or high-speed precision machinery. However, the high-precision positioning platform will encounter backlash, friction, hysteresis ... and so on. Therefore, this paper will use the linear voice coil motor to drive single-axis flexure mechanism, to solve the nonlinear problem unnecessarily. Then, the quantized current regulator has been reached by high efficiency robust frequency control and to design with a low-pass filter of the interference within the system parameter estimation to reduce the impact of changes in items, and then by the simulation test analysis showed that the proposed hybrid control method has simultaneous control of voice coil motor current and the flexure mechanism targeting the advantages of location, and the use of traditional pulse-width modulation of the PI current controller with integral type of smooth position control mode, respectively quantized current regulator and the disturbance estimator to do a comparative analysis of simulation . Finally the use analogies full the bridge electric circuit, several logic and the operational amplifier realizes the quantification current regulator.