Title: Closed loop controlling system based on amplitude-frequency feature of resonance type sensor
Application Number: 200610114362 Application Date: 2006.11.08
Publication Number: 1949105 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G05B11/14;G01D5/00;G01D5/12;G01H11/00
Applicant(s) Name: Beijing Aerospace Univ. Address:
Inventor(s) Name: Fan Shangchun;Cai Chenguang;Xing Weiwei
Attorney & Agent: jiayu zhong luji
Abstract:
    The invention relates to resonant transducer closed loop control system based on the amplitude-frequency characteristic. The system includes amplitude detector, controller, and drive signal generator. The controller controls the drive signal generator to generate drive signal with single frequency. The amplitude detector detects the output signal amplitude of the sensitive structure. When the frequency of the drive signal increases, it continues if the output single amplitude increases; while it is opposite if it is not. When the frequency of the drive signal reduces, it continues if the output signal amplitude increases; while it is opposite if it is not. This can further make the output single amplitude reach the maximum. The corresponding drive signal frequency is the resonance frequency for the resonator. Thus the invention can realize transducer closed loop.
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