Title: Absolute type angular displacement sensor
Application Number: 200610054586 Application Date: 2006.11.10
Publication Number: 1948915 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D5/32;G01D5/38;G01D5/347
Applicant(s) Name: Chongqing Polytechnical College Address:
Inventor(s) Name: Peng Donglin;Yang Wei;Zhu Ge;Wan Wenlue;Wang Xianq
Attorney & Agent: kanghai yan
Abstract:
    The invention supplies absolute type angular displacement transducer. It is made up of common increment type angular displacement transducer, signal synthesis circuit, and absolute type time grating signal processing circuit. The two-path space orthogonal signal transmitted from the common increment type angular displacement transducer is used as modulated signal Bsin2 pi x/W and Bcos2 pi x/W with cyclic variation. The modulated signal and two-path time orthogonal carrier signal Acos2 pi t/T and Asin2 pi t/T generated by clock circuit are connected with multiplier to process synthesis modulation. The outputted two-path modulated standing wave signal are directly added into one path electric traveling wave signal which is accessed into phase comparison circuit with the signal which has the same frequency of the carrier signal to gain angular displacement measuring result. The transducer has the advantages of low cost, high reliability, high intelligentized degree.
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