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    A, 2012

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    30 2012.

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    Copyright 2012

    . All rights reserved.

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    2012

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    (servodrive) .

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    , , R/C servos

    digital servos.

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  • Abstract

    The requirement for high torque, speed and position control of the electric drive, led to

    the rapid development of servomotors and the servomotor systems. Servomotors are new

    technology motors which incorporate feedback deivce and with the help of the servodrive

    system they can ensure precision movement. Usually they are used in automation control

    systems.

    Generally speaking this diplomatic paper is a presentation on operating principles,

    characteristics and main applications of servomotors and servosystems.

    The first chapter provides a general introduction to the servomotors, main parts, basic

    characteristics, advantages and disadvantages, categories and selection criteria for the

    applications.

    The second chapter provides an analysis of the basic types of electric servomotors such as

    induction motors, direct current motors, permanent magnet synchronous motors, hybrid

    servos, R/C servos and digital servos.

    The third chapter refers to the servomotor systems, the functional diagram, the feedback

    devices, the cost, the servo amplifiers and DC - AC motors servodrive systems.

    The fourth chapter refers to the application areas of the servomotors and generally of the

    servosystems. Servomotors offered to motion control systems the possibility for parallel

    control of velocity and position with great accuracy. This makes them suitable for a wide

    range of industrial applications. In this chapter we analyze several such examples in order

    to fully understand their function.

    eywords

    Servomotors, Servosystems, Electromotors, Servomechanisms, Automation Control

    Systems, Movement Control

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    ..............................................................................................................................5

    ..................................................................................................................................7

    Abstract....................................................................................................................................9

    ............................................................................................................................11

    .....................................................................................13

    1:

    1.1 ...........................................................................................................17

    1.2 .........................................................................18

    1.3 ............................................................................................20

    1.3.1 ......................................................................................22

    1.3.1.1 .........................................22

    1.3.1.2 ................................................23

    1.4 .................................................................................25

    1.4.1 ...............................................................26

    1.4.2 ...........................................................................26

    1.4.3 ..............................................................27

    1.5 ......................................................31

    1.6 .....................................................32

    2:

    2.1 .............................................................................................35

    2.1.1 ................................................................................35

    2.1.2 .................................................36

    2.1.3 .....................................37

    2.1.4 ..........................................42

    2.2 .................................................................................45

    2.2.1 ...............................................................45

    2.2.2 .....................................................46

    2.2.3 (armature contol)......................48

    2.2.4 (field control)..............................49

    2.3 ............................................................................51

    2.4 ...............................................................................................54

    2.4.1 ....................................................................54

    2.4.2 O ....................................................................................56

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    2.5 (digital servos)....................................................................57

    2.5.1 .....................................................................................57

    2.5.2 ........................................59

    2.6 R/C servos..........................................................................................................................61

    3:

    3.1 ........................................................................................... ................................65

    3.2 ........................................66

    3.3 .......................................................68

    3.3.1 ...........................................................................................................69

    3.3.2 (resolver)........................................................70

    3.3.3 (optical encoder)......................................................73

    3.3.3.1 .........................................................74

    3.3.3.2 .......................................................75

    3.3.3.3 (linear encoder)...........................77

    3.3.4 Hall (Hall-effect transducers)......................................................78

    3.3.5 ............................................................80

    3.4 ..........................................................80

    3.5 - ..............................................82

    3.5.1 .............................................86

    3.5.2 .................................89

    3.5.2.1 -....................90

    3.5.2.2 .........................................................................................93

    3.6 ...............................................................95

    4:

    4.1 ................................................................................97

    4.2 ..................................................................98

    4.3 ..............................................100

    4.4 ........................................................108

    4.5 ............................................................................109

    4.6 ..............................................111

    4.7 ...................................................112

    4.8 ..................................................................114

    .......................................................................................................................117

    .............................................................................................................................119

    ..........................................................................................................................123

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    1.1 -

    , .............................................................19

    1.2 ......................20

    1.3 () (brushless.)...............21

    () ..............................................................21

    1.4 (i)

    (ii) ...........................................................................................23

    1.5 (linear servo motor)................................24

    1.6 ()- ...................................................................................................28

    1.7 -

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