Programmable, multi-turn, pulse width modulation circuit for a non-contact angular position sensor

Author

Madni, Azad M. ; Vuong, J.B. ; Vuong, P.T.

Author_Institution

BEI Technologies. Inc., 13100 Telfair Avenue, Sylmar, California 91342 U. S. A.

Volume

16

fYear

2004

fDate

June 28 2004-July 1 2004

Firstpage

93

Lastpage

100

Abstract

Recent requirements from the automotive industry for Electronic Stability Control and Roll Prevention Systems together with better fuel efficiency (i.e. engine power reduction) have dictated the replacement of the Power Steering Hydraulic Pump with an electric motor. The main steering angle sensor for this application needs to be a multi-turn rotary position sensor. This paper presents a circuit based on a design technique that produces a multiple-turn output of a full (0° to 360°) cycle of a Pulse-Width-Modulation (PWM) signal from a single (0° to 360°) turn of a Non-Contact Angular Position Sensor (NCAPS) [1, 2, 3, 4]. While described for use with the NCAPS, the circuit can be used with any rotary or linear sensor with a compatible PWM output.

Keywords

Automotive engineering; Circuit stability; Degradation; Modulation coding; Optical modulation; Optical pumping; Optical sensors; Pulse circuits; Pulse width modulation; Space vector pulse width modulation; Multi-Turn Position Sensor; PWM Circuit; Pulse Width Modulation Circuit; Steering Angle Sensor; Turns Counter;

fLanguage

English

Publisher

ieee

Conference_Titel

Automation Congress, 2004. Proceedings. World

Conference_Location

Seville

Print_ISBN

1-889335-21-5

Type

conf

Filename

1438638