Sensorless position estimator for a nonlinear solenoid actuator

M. F. Rahman, Chow Norbert Cheung, K. W. Lim

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

16 Citations (Scopus)

Abstract

The proportional solenoid is a variable reluctance actuator operating under trajectory or position control mode. Established sensorless position estimation methods for variable reluctance motors do not work on proportional solenoids due to its single phase structure, non-cyclic electrical signals, unpredictable load variations and highly nonlinear model. In this paper, a novel method of estimating the position of a solenoid by indirect observation of incremental inductance in the excited coil is described. The method relies on accurate measurement of di/dt values. For this purpose, a novel hardware circuit which measures the di/dt values from PWM current waveform accurately and reliably is developed. The method is implemented on a DSP and the results are found to be satisfactory.
Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
Pages1208-1213
Number of pages6
Publication statusPublished - 1 Dec 1995
Externally publishedYes
EventProceedings of the 1995 IEEE 21st International Conference on Industrial Electronics, Control, and Instrumentation. Part 1 (of 2) - Orlando, FL, United States
Duration: 6 Nov 199510 Nov 1995

Conference

ConferenceProceedings of the 1995 IEEE 21st International Conference on Industrial Electronics, Control, and Instrumentation. Part 1 (of 2)
CountryUnited States
CityOrlando, FL
Period6/11/9510/11/95

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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