ISO-10770-1-1998.pdf
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1、A Reference number ISO 10770-1:1998(E) INTERNATIONAL STANDARD ISO 10770-1 First edition 1998-05-15 Hydraulic fluid power Electrically modulated hydraulic control valves Part 1: Test methods for four-way directional flow control valves Transmissions hydrauliques Distributeurs hydrauliques modulation
2、lectrique Partie 1: Mthodes dessai pour distributeurs quatre voies Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted without lic
3、ense from IHS -,-,- ISO 10770-1:1998(E) ISO 1998 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 the publisher. I
4、nternational Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetcentraliso.ch X.400c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii ContentsPage 1Scope .1 2Normative references .1 3Definitions 1 4Symbols and units 2 5Standard test conditions .3 6
5、Test installation 3 7Electrical tests 4 8Performance tests 6 9Endurance test .22 10Pressure impulse test . 22 11Environmental tests 23 12Presentation of results 24 13Identification statement 26 Tables 1Symbols and units 2 2Standard test conditions .3 3Sinusoidal signal function .20 4Input step funct
6、ions 21 A.1Permissible systematic errors of measuring instruments as determined during calibration . 41 Figures 1Typical steady-state test circuit .27 2Typical dynamic test circuit28 3Valve coil inductance 29 a)Inductance test 29 b)Voltage vector diagram . 29 Copyright International Organization for
7、 Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 10770-1:1998(E) iii 4Valve coil step response . 30 5Internal leakage versus inpu
8、t signal 30 6Output flow versus input signal at constant valve pressure drop 31 7Threshold characteristics 31 8Metering test . 32 9Output flow without integral pressure compensation . 33 a)Output flow versus load pressure difference 33 b)Output flow versus valve pressure drop . 33 10Output flow with
9、 integral pressure compensation 34 a)Output flow versus load pressure difference 34 b)Output flow versus valve pressure drop . 34 11Limiting power curve .35 12Output flow and pressure difference versus fluid temperature 36 a)Output flow 36 b)Load pressure difference .36 13Blocked port load pressure
10、versus input signal .37 14Load pressure difference versus input signal 38 15Frequency response . 39 16Step response 40 a)Transient response to step input signal . 40 b)Transient response to load pressure step with flow compensation . 40 Annexes A (normative) Errors and classes of measurement 41 B(in
11、formative) Guidance on conducting the tests 42 C(informative) Bibliography .43 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted
12、 without license from IHS -,-,- ISO 10770-1:1998(E) ISO iv Foreword ISO (the International Organisation for Standardisation) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committ
13、ees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organisations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Int
14、ernational Electrotechnical Commission (IEC) on all matters of electrotechnical standardisation. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member
15、 bodies casting a vote. International Standard ISO 10770-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 8, Product testing. This first edition of ISO 10770-1 together with ISO 10770-2 cancel and replace ISO 6404:1985, of which they constitute a technical revis
16、ion. In particular, ISO 10770 is wider-ranging and more comprehensive, covering both servovalves and proportional valves. ISO 10770 consists of the following parts, under the general title Hydraulic fluid power Electrically modulated hydraulic control valves: Part 1: Test methods for four-way direct
17、ional flow control valves Part 2: Test methods for three-way directional flow control valves Part 3: Test methods for pressure control valves Annex A forms an integral part of this part of ISO 10770. Annexes B and C are for information only. Copyright International Organization for Standardization P
18、rovided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 10770-1:1998(E) v Introduction In hydraulic fluid power systems, power is transmitted by a fluid u
19、nder pressure from a hydraulic power source to one or several loads through electrically modulated hydraulic control valves. These control valves are components which receive control signals in the form of an electrical signal, receive hydraulic power from a power source, and then, control the direc
20、tion and amount of hydraulic flow to the load, depending upon the electrical input signal. There are a number of performance characteristics that must be known in order to successfully apply electrically modulated hydraulic control valves. Copyright International Organization for Standardization Pro
21、vided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NA
22、SA Technical Standards 1/9972545001 Not for Resale, 04/07/2007 07:46:52 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISOISO 10770-1:1998(E) 1 Hydraulic fluid power Electrically modulated hydraulic control valves Part 1: Test methods for four-way di
23、rectional flow control valves 1 Scope This part of ISO 10770 describes methods for production acceptance and type (or qualification) testing of electrically modulated hydraulic four-way directional flow control valves. 2 Normative references The following standards contain provisions, which, through
24、 reference in this text, constitute provisions of this part of ISO 10770. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 10770 are encouraged to investigate the possibility of applying the most
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