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SERVO CONTROLLER
INTERFACING OPEN/CLOSE LOOP -
BSPIL-MECLAB-007
specification :
D.C. Position Control System
This trainer consists of a feedback control system to perform angular
positioning. A 360 potentiometer forms the feedback element and a Pulse Width
Modulated DC motor with gear mechanism forms the actuating element.
This trainer consists of the following:
1. 360 potentiometer.
2. Signal conditioning circuit for potentiometer.
3. DC Motor.
4. Motor driver circuit.
5. DC motor power drivers
6. ADC and DAC
7. Built in power supply.
NOTE: This trainer does not include the
controller. This trainer requires a controller to perform the control action.
The compatible controllers are also quoted below.
The objective of this experiment is to run the DC servomotor for required
position using a digital controller. In thi case, it is a microprocessor/micro
controller trainer. The digital controller performs the function of the
controller by replacing the summing amplifiers 1 and 2, and the error detector.
The buffer amplifiers and the power driver circuit are common for both the types
of control (analog and digital).
The set point is applied through software (program). The controller reads the
output of the receiver buffer amplifier (process variable) through the ADC. The
position control algorithm output is then sent to the DAC. The output of the DAC
is applied to the power driver circuit, to drive the motor. The motor rotates
until it reaches the set point. On reaching the set point, the motor stops
rotating.
NOTE: The scope of supply does not include the controller. The user has to
select any one of the following optional trainers, which act as a controller
a. Microprocessor trainer Model MPT-J-85 with necessary connectors. OR
b. Micro controller trainer Model MCT-31with necessary connectors OR
c. PC based parallel connector interface system Model IBR-3
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