Mirror Position Sensor Operation

The position sensors are used by the MMM in order to perform the following functions:
^ Store the motor positions in memory.
^ Return the motors to the stored memory positions.

The mirror position sensors are potentiometers that are mounted to each mirror motor's transmission cable. When the cable rotates, the resistance of the potentiometer varies. The feedback voltage is monitored by the MMM in order to determine the motor position. The sensor feedback voltages vary from 0.25-4.75 volts. When a set memory command is executed, the MMM records and stores the motor positions by recording each position sensors feedback voltage. When a memory recall is commanded, the MMM moves the motors until all of the position sensor feedback voltages equal the voltages stored in the memory.