400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 SAE TECHNICAL PAPER SERIES 1999-01-1061 Modeling of Proportional Control Solenoid Valve for Automatic Transmission Using System Identification Theory Baek-Hyun Cho Hyundai Motor Company Gyu-Hong Jung Daejin University Jae-Woong Hur and Kyo-Il Lee Seoul National University Reprinted From: 1999 Transmission and Driveline Systems Symposium (SP-1440) International Congress and Exposition Detroit, Michigan March 1-4, 1999Downloaded from SAE International by University of British Columbia, Sunday, July 29, 2018The appearance of this ISSN code at the bottom of this page indicates SAE’s consent that copies of the paper may be made for personal or internal use of specific clients. This consent is given on the condition, however, that the copier pay a $7.00 per article copy fee through the Copyright Clearance Center, Inc.Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sec-tions 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such ascopying for general distribution, for advertising or promotional purposes, for creating new collective works,or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department.To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior wr itten permission of the publisher. ISSN 0148-7191 Copyright 1999 Society of Automotive Engineers, Inc. Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by which discussions will be printed with the paper if it is p ublished in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Group. Persons wishing to submit papers to be considered for presentation or publication through SAE should send the manuscript or a 3 00 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USAAll SAE papers, standards, and selected books are abstracted and indexed in the Global Mobility DatabaseDownloaded from SAE International by University of British Columbia, Sunday, July 29, 20181 1999-01-1061 Modeling of Proportional Control Solenoid Valve for Automatic Transmission Using System Identification Theory Baek-Hyun Cho Hyundai Motor Company Gyu-Hong Jung Daejin University Jae-Woong Hur and Kyo-Il Lee Seoul National University Copyright © 1999 Society of Automotive Engineers, Inc. ABSTRACT As most of today's automatic transmissions adopt a elec- tro-hydraulic control system, the role of electronicallycontrolled solenoid valves occupies an important posi-tion. This paper presents a dynamic modelling techniqueof a proportional control solenoid valve(PCSV) for auto-matic transmissions in terms of the system identificationtheory, and analyzes the dynamic characteristics of thePCSV in frequency domain. Also we find that there aregood matches between the nonlinear dynamic simulationresults and the experimental data. INTRODUCTION Generally, most of the automatic transmissions havebeen using the hydraulic systems to control gear shifting.In 1980’s, along with the development of electroic tech-nologies electro-hydraulic control systems were intro-duced to the powertrain, so that it was possible to realizemore various functions and accurate controls and thegreat turning point of fuel consumption, performance, anddrivability was made.[1] As actuators to transform the electri