Page 461 - Sensors and Control Systems in Manufacturing
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                     FIGURE 8.32  Structure of a fl exible manufacturing system.


                             The adaptive control offers search and contour-following modes.
                          Up to three sensor signals can be used to guide the movements of the
                          robot. The direction in which the robot is to move must be given for
                          each signal. The displacement or velocity is proportional to the signal
                          value generated by the displacement sensor. Both digital and analog
                          signals produced by sensors are accepted. Digital signals may consist
                          of 1 to 8 bits.
                             The interrupt lines are used to start or stop a robot movement and
                          to synchronize tasks.
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