Systematic Design of PD Controller for Capacitive Semi-Conductive Accelerometers

• Main Authors: Hsu-Jung Huang, 黃旭榕
• Other Authors: Shyh-Leh Chen
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/41469819608429724336

碩士 === 國立中正大學 === 機械系 === 87 === The systematic design of PD controllers for capacitive semi-conductive accelerometers(CSCA) is studied in the thesis. Due to the modulation-demodulation of the output signal of the microaccelerometer, the overall system is linear time- varying. Two approaches are taken in this study to design PD controller for this linear time-varying system. First, we design the parameters of the PD controller by conventional Floquet theory to achieve the internal stability of the CSCA system, and the results are confirmed by numerical simulations. The experiment based on an equivalent CSCA model is conducted to verify the feasibility of the method. On the other hand, two previous methods are integrated to propose a systematic design method for PD controllers of multi-output LTV systems. Similar to the feedback linearization technique, the proposed method cancels the time-varying terms by feedback and Lyapunov coordinate transformation. The existence of solu- tions and robustness of the PD controllers are also discussed. Finally, it is applied to the multi-output LTV CSCA system.