ISO-17288-2-2004.pdf
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1、 Reference number ISO 17288-2:2004(E) ISO 2004 INTERNATIONAL STANDARD ISO 17288-2 First edition 2004-08-15 Passenger cars Free-steer behaviour Part 2: Steering-pulse open-loop test method Voitures particulires Comportement volant libre Partie 2: Mthode dessai en boucle ouverte avec impulsion au vola
2、nt ISO 17288-2:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
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5、ess given below. ISO 2004 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 ISOs
6、 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.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved ISO 17288-2:2004(E) ISO 2004 All rights reserved iii Cont
7、ents Page Forewordiv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions.1 4 Principle .1 5 Variables.2 6 Measuring equipment.2 7 Test conditions3 8 Test procedure 3 9 Data analysis .4 Bibliography13 -,-,- ISO 17288-2:2004(E) iv ISO 2004 All rights reserved Foreword ISO (the Inte
8、rnational 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 technical committee has
9、 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 matters of electrotechnical s
10、tandardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies
11、 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or
12、 all such patent rights. ISO 17288-2 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: Part 1: Steering-release open-loop
13、test method Part 2: Steering-pulse open-loop test method ISO 17288-2:2004(E) ISO 2004 All rights reserved v Introduction The dynamic behaviour of road vehicles is a most important part of active vehicle safety. Any given vehicle, together with its driver and the prevailing environment, forms a uniqu
14、e closed-loop system. The task of evaluating dynamic behaviour is therefore very difficult since there is a significant interaction between these drivervehicleenvironment elements, and each element is individually complex itself. A complete and accurate description of the behaviour of the road vehic
15、le 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 of the overall dynamic behaviour. Moreover, in
16、sufficient 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 between accident avoidance and vehicle dynamic pro
17、perties 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 of many tests which, taken together, will cov
18、er 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 17288-2:2004(E) ISO 2004 All rights reserved 1 Passenger cars Free-steer behaviour Part 2: Steer
19、ing-pulse open-loop test method 1 Scope This part of ISO 17288 specifies a procedure for determining the free control stability of a passenger car as defined in ISO 3833, by measurement of the transient behaviour following steering pulse input, starting from a straight-ahead, steady-state status. NO
20、TE The open loop manoeuvre specified in this part of ISO 17288 is not representative of normal driving conditions, but is useful for obtaining a measure of vehicle transient behaviour. 2 Normative references The following referenced documents are indispensable for the application of this document. F
21、or dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3833, Road vehicles Types Terms and definitions ISO 8855, Road vehicles Vehicle dynamics and road-holding ability Vocabulary ISO 15037-1:
22、1998, Road vehicles Vehicle dynamics test methods Part 1: General conditions for passenger cars 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 3833 and ISO 8855 apply. 4 Principle This test is intended to evaluate the ability of the vehicle to retur
23、n to a straight path following a steering pulse input from a straight-ahead, steady-state driving initial condition. Oscillation of the vehicle is initiated by the application of a single pulse steering input. This is followed by release of the steering wheel and a period during which the steering w
24、heel is free. The steering-wheel angle and the vehicle response are measured and recorded. From the recorded signals, characteristic values are calculated. ISO 17288-2:2004(E) 2 ISO 2004 All rights reserved 5 Variables 5.1 Reference system The provisions given in ISO 15037-1:1998, 3.1, apply. 5.2 Me
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