In: Electrical Engineering
Speed control of motors (ac motors as well as dc
motors) can be accomplished by
using solid-state switching circuitry In one such method, a
solid-state relay is activated
using a switching signal generated by a microcomputer so as to turn
on and off at high
speed, the power into the motor drive circuit. Speed of the motor
can be measured using a
sensor such as tachometer or optical encoder. This signal is read
by the microcomputer
and is used to modify the switching signal so as to correct the
motor speed. Using a
schematic diagram, describe the hardware needed to implement this
control scheme.
Explain the operation of the control system.