EXAMPLE 8.7 Engraving machine control system The engraving machine shown in Figure 8.32(a) uses two drive...

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EXAMPLE 8.7 Engraving machine control system The engraving machine shown in Figure 8.32(a) uses two drive motors and associated lead screws to position the engraving scribe in the x direction [7]. A separate motor is used for both the v- and z-axes, as shown. x-axis Scribe y-axis z-axis Metal to be engraved Position measurement X-motor x-motor 2 Desired position Position measurement (a) Controller Controller Motor, screw, and scribe holder Y(s) 1 R(s) K Position on s(s + 1)(s+2) t-axis (b) EXAMPLE 8.7 Engraving machine control system The engraving machine shown in Figure 8.32(a) uses two drive motors and associated lead screws to position the engraving scribe in the x direction [7]. A separate motor is used for both the v- and z-axes, as shown. x-axis Scribe y-axis z-axis Metal to be engraved Position measurement X-motor x-motor 2 Desired position Position measurement (a) Controller Controller Motor, screw, and scribe holder Y(s) 1 R(s) K Position on s(s + 1)(s+2) t-axis (b)