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A contactless capacitive angular-position sensor
dc.contributor.author | Gasulla Forner, Manuel |
dc.contributor.author | Li, Xiujun |
dc.contributor.author | Meijer, Gerard C. M. |
dc.contributor.author | Van der Ham, Lucas |
dc.contributor.author | Spronck, Jo W. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.date.accessioned | 2007-10-31T15:39:14Z |
dc.date.available | 2007-10-31T15:39:14Z |
dc.date.created | 2002 |
dc.date.issued | 2003-10 |
dc.identifier.citation | Gasulla Forner, M.; Li, Xiujun; Meijer, Gerard C. M... et al. A contactless capacitive angular-position sensor. IEEE Sensors Journal, 2003, Vol. 3, No. 5, 607-614 |
dc.identifier.issn | 1530-437X |
dc.identifier.uri | http://hdl.handle.net/2117/1283 |
dc.description.abstract | This paper presents an absolute capacitive angular-position sensor with a contactless rotor. The sensor is mainly composed of three parts: the capacitive sensing element, a signal processor, and a microcontroller. The electrically floating rotor can be either conductive or dielectric. For the dielectric material, we chose plastic, and for the conductive rotor, we chose aluminum. The sensing element has a redundant structure, which reduces mechanical nonidealities. The signal processor has a multicapacitance input and a single output, which is a period-modulated square-wave voltage. The microcontroller acquires output data from the processor and sends them to a PC, which calculates the rotor position. Theoretical analysis, supported by experimental results, show that the sensitivity to mechanical nonidealities of the sensing element is higher in the case of a conductive rotor. The resolution of the capacitive angular-position sensor over the full range (360/spl deg/) was better than 1". The measured nonlinearity was /spl plusmn/ 100" and /spl plusmn/ 300" for the dielectric and the conductive rotor, respectively. |
dc.format.extent | 8 |
dc.language.iso | eng |
dc.publisher | Institute of Electrical and Electronics Engineers |
dc.subject | Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal |
dc.subject.lcsh | Detectors |
dc.subject.lcsh | Signal processing |
dc.subject.lcsh | Microelectronics |
dc.subject.other | Absolute position encoder |
dc.subject.other | Angular position measurement |
dc.subject.other | Capacitance measurement |
dc.subject.other | Capacitive sensor |
dc.subject.other | Contactless angle encoder |
dc.subject.other | Rotary position |
dc.title | A contactless capacitive angular-position sensor |
dc.type | Article |
dc.subject.lemac | Sensors |
dc.subject.lemac | Processament del senyal |
dc.subject.lemac | Microcontroladors |
dc.contributor.group | Universitat Politècnica de Catalunya. GRUP ISI - Grup d'Instrumentació, Sensors i Interfícies |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.personalitzacitacio | true |
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