DUAL FEEDBACK - VOICE COIL POSITIONING STAGE
NOTES:
-The controller can only close the loop on one feedback device at a time. In this case it can close the loop on the position and monitor the force or close the loop on the force and monitor the position.
Step 1. A program or motion profile will be written on a PC or laptop and downloaded to the motion controller. This program will contain parameters such as speed, acceleration, deceleration, PIDs, desired position/force, etc…
Step 2. Based on the program parameters, the motion controller will send a +/- 10V reference signal to the servo amplifier.
Step 3. The servo amplifier will take the reference input signal and provide the necessary current to generate the required force from the motor to move to the desired position.
Step 4. The motor will move to the desired position or achieve the desired force at the programmed speed and acceleration.
Step 5a/5b: Motor position/force is sent back to the controller to verify that the desired position/force has been reached and maintained.