ISO-17288-1-2002.pdf
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1、 Reference number ISO 17288-1:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 17288-1 First edition 2002-06-01 Passenger cars Free-steer behaviour Part 1: Steering-release open-loop test method Voitures particulires Comportement volant libre Partie 1: Mthode dessai en boucle ouverte avec relchement du v
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5、ddress given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or I
6、SOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reserved -,-,- ISO 17288-1:2002(E) ISO 2002 All rights reserved iii
7、 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a
8、technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matter
9、s of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulat
10、ed to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 17288 may be the subject of patent rights. ISO shall not be held re
11、sponsible for identifying any or all such patent rights. ISO 17288-1 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 9, Vehicle dynamics and road-holding ability. ISO 17288 consists of the following parts, under the general title Passenger cars Free-steer behaviour : Pa
12、rt 1: Steering-release open-loop test method Part 2: Steering-pulse open-loop test method -,-,- ISO 17288-1:2002(E) iv ISO 2002 All rights reserved Introduction The dynamic behaviour of road vehicles is a most important part of active vehicle safety. Any given vehicle, together with its driver and t
13、he prevailing environment, forms a unique closed-loop system. The task of evaluating dynamic behaviour is therefore very difficult since there is a significant interaction between these driver-vehicle- environment elements, and each element is individually complex in itself. A complete and accurate
14、description of the behaviour of the road vehicle must necessarily involve information obtained from a number of tests of different types. Since they quantify only a small part of the whole handling field, the results of these tests can only be considered significant for a correspondingly small part
15、of the overall dynamic behaviour. Moreover, insufficient knowledge is available concerning the relationship between accident avoidance and the dynamic characteristics evaluated by these tests. A substantial amount of effort is necessary to acquire sufficient and reliable data on the correlation betw
16、een accident avoidance and vehicle dynamic properties in general, and the results of these tests in particular. Therefore, it is not possible to use these methods and test results for regulation purposes at present. The best that can be expected is that the free-steer behaviour tests be used as some
17、 of many tests which, taken together, will cover the field of vehicle dynamic behaviour. Finally, the role of the tyres is important and the test results can be strongly influenced by the type and condition of tyres. -,-,- INTERNATIONAL STANDARD ISO 17288-1:2002(E) ISO 2002 All rights reserved 1 Pas
18、senger cars Free-steer behaviour Part 1: Steering-release open-loop test method 1 Scope This part of ISO 17288 specifies an open-loop test method for determining the free control stability of a passenger car as defined in ISO 3833, by measurement of the transient behaviour following steering release
19、, starting from a steady-state cornering status. NOTE The open-loop manoeuvre specified in this part of ISO 17288 is not representative of normal driving conditions, but is nonetheless useful for obtaining a measure of vehicle transient behaviour. 2 Normative references The following normative docum
20、ents contain provisions which, through reference in this text, constitute provisions of this part of ISO 17288. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 17288 are encouraged to in
21、vestigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 3833, Road ve
22、hicles Types Terms and definitions ISO 8855, Road vehicles Vehicle dynamics and road-holding ability Vocabulary ISO 15037-1:1998, Road vehicles Vehicle dynamics test methods Part 1: General conditions for passenger cars 3 Terms and definitions For the purposes of this part of ISO 17288, the terms an
23、d definitions given in ISO 3833 and ISO 8855 apply. 4 Principle This test is intended for evaluating the ability of a vehicle to return to a straight path following steering-wheel release from a steady-state turn. The initial conditions are defined by a steady-state circular motion. During the test,
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