ELECTROMECHANICAL DESIGN HANDBOOK（机电设计手册）.pdf

ELECTROMECHANICAL DESIGN HANDBOOK Ronald A. Walsh Manager, Research and Development Powercon Corporation Severn, Maryland Third Edition McGRAW-HILL New York San Francisco Washington, D.C. Auckland Bogotá Caracas Lisbon London Madrid Mexico City Milan Montreal New Delhi San Juan Singapore Sydney Tokyo Toronto Library of Congress Cataloging-in-Publication Data Walsh, Ronald A. Electromechanical design handbook / Ronald A. Walsh. — 3rd ed. p. cm. ISBN 0-07-134812-3 1. Electromechanical devices—Design and construction—Handbooks, manuals, etc. I. Title. TJ163.W35 1999 621—dc21 99-4487 CIP Copyright © 2000 by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written per- mission of the publisher. 1 2 3 4 5 6 7 8 9 0 DOC/DOC 9 0 9 8 7 6 5 4 ISBN 0-07-134812-3 The sponsoring editor for this book was Linda Ludewig, the editing supervisor was M. R. Carey, and the production supervisor was Pamela A. Pelton. It was set in Times Roman by North Market Street Graphics. Printed and bound by R. R. Donnelley Sons Company. This book is printed on acid-free paper. McGraw-Hill Books are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training pr