| Electrostatic Suspension System Nonlinear Character Analysis and Its Internal Model Control |
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| 作者姓名： | 糜长军 郭晋峰 金志华 田蔚风 |
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| 作者单位： | Inst. of Navigation and Control Dept. of Instrument Science and Eng. Shanghai Jiaotong Univ.，Inst. of Navigation and Control Dept. of Instrument Science and Eng. Shanghai Jiaotong Univ.，Inst. of Navigation and Control Dept. of Instrument Science and Eng. Shanghai Jiaotong Univ.，Inst. of Navigation and Control Dept. of Instrument Science and Eng. Shanghai Jiaotong Univ.，Shanghai 200240 China，Shanghai 200240 China，Shanghai 200240 China，Shanghai 200240 China |
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| 基金项目： | Weaponry Advanced FundItem of China(No51409030101JW03) |
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| 摘 要： | Nonlinearity is an important characteristic in electrostatic suspension system (ESS). This paper concludes the nonlinear parts in ESS, which generally result from the relationships between rotor displacement and capacitance, rotor displacement and electrostatic force, and control voltage and electrostatic force. In terms of the nonlinearities, a new control method with modified internal model control (IMC) was proposed to analyze the ESS, deduce the transfer function of the modified IMC controller in ESS, and simulate this new application in ESS. Comparing with proportional integral derivative (PID) control, IMC has only a parameter, and has better performance. As a result, IMC solves nonlinearity error well in ESS with only one uncertain parameter, and performs well when the rotor has large displacement.
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| 关 键 词： | 导航设备 悬浮液 模型控制 非线形设计 |
Electrostatic Suspension System Nonlinear Character Analysis and Its Internal Model Control |
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| MI Chang-jun,GUO Jin-feng,JIN Zhi-hua,TIAN Wei-feng.Electrostatic Suspension System Nonlinear Character Analysis and Its Internal Model Control[J].Journal of Shanghai Jiaotong university,2007,12(3):377-382. |
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| Authors: | MI Chang-jun GUO Jin-feng JIN Zhi-hua TIAN Wei-feng |
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| Abstract: | Nonlinearity is an important characteristic in electrostatic suspension system (ESS). This paper concludes the nonlinear parts in ESS, which generally result from the relationships between rotor displacement and capacitance, rotor displacement and electrostatic force, and control voltage and electrostatic force. In terms of the nonlinearities, a new control method with modified internal model control (IMC) was proposed to analyze the ESS, deduce the transfer function of the modified IMC controller in ESS, and simulate this new application in ESS. Comparing with proportional integral derivative (PID) control, IMC has only a parameter, and has better performance. As a result, IMC solves nonlinearity error well in ESS with only one uncertain parameter, and performs well when the rotor has large displacement. |
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| Keywords: | electrostatic suspension system (ESS) internal model control (IMC) nonlinearity |
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