Sheet.
3
        Modeling of Fluid Power and Thermal
                      Systems
P4.1. A hydraulic servomechanism with mechanical feedback is shown
in fig.
        a- Obtain the equations describing the system b- Draw the
        corresponding block diagram to find the transfer function
        Y(S)/X(S)
                                   1
P.4.2. A paper tension control system is shown in fig.
       c- Obtain the equations describing the system d- Draw the
       corresponding block diagram to find the transfer function
P4.3.
                                   2
P 4.4.
         3
P 4.5.
         4
5
P
    4.6.
           6
P 4.7.
         7
P
    4.8.
           8
P 4.9.
         9
P
    4.10.
            10
11
P
    12
P
    4.11.
            13
P
    4.12.
            14
P
    4.13.
            15
P4.14.
P4.15 Explain the operation of the speed control system shown in figure, hence obtain
the physical equation of the system nd draw the corresponding block diagram
                                          16
P4.16
P4.17
        17
18