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Signal separation technology for diphase opposition
giant magnetostrictive self-sensing actuator |
| Xinhua WANG1,Shuwen SUN1,Jian ZHEN1,Qianyi YA2,Deguo WANG2, |
| 1.College of Mechanical
Engineering and Applied Electronics Technology, Beijing University
of Technology, Beijing 100022, China; 2.College of Mechanical
and Electrical Engineering, China University of Petroleum, Beijing
102249, China; |
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Abstract The structure and principle of a new type of a diphase opposition giant magnetostrictive self-sensing actuator is introduced. A bridge analysis model based on variable inductance is established. Dynamic balance separation technology for the giant magnetostrictive self-sensing actuator comes true by the least means square (LMS) self-adapting algorithm. The scheme design of one important part of the circuit with the real-time separation circuit of the dynamic balance signal based on a digital signal processor is obtained. The part of the signal separated circuit is designed, which includes logarithmic-antilog practical multiplication circuit, amplifying circuit, filter circuits, and amplifier circuit. Based on the embedded system simulation software—PROTUES, the simulation effect of the circuit that separates the sensing signal from the mixed signals is obvious, which indicates that the circuit can rapidly and stably work. Moreover, the structure is simple, reliable, and meets the practical requirement.
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| Keywords
giant magnetostrictive material (GMM) self-sensing actuator
least means square (LMS) self-adapting algorithm
design of self-adaptive circuit
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Issue Date: 05 June 2010
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