Page 355 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

Control Method For Servo Motor

There are various methods to control a servo motor
1 Pulse Width Modulation (PWM): Most common method where the servo’s position is controlled by the
duration of a pulse signal sent to it. The width of the pulse determines the position of the servo.

2 Position Control: Directly specifying the desired position of the servo motor. This can be achieved using
analog or digital control signals.
3 PID Control: Using a proportional-integral-derivative (PID) controller to adjust the servo’s position based on
feedback from sensors, such as encoders or potentiometers, to minimize error between the desired and actual
position.

4 Microcontroller: Utilizing a microcontroller, such as Arduino or Raspberry Pi, to generate control signals for
the servo motor based on user-defined algorithms or commands.
5 Closed-loop Control: Combining feedback from sensors with control algorithms to continuously adjust the
servo’s position for more precise control.
The choice of control method depends on factors such as the application requirements, precision needed,
complexity of the system, and available resources.

Study of servo drive

Studying servo drives involves understanding their components, operation principles, control mechanisms,
and applications in various industries such as robotics, manufacturing, and automation. Key areas to explore
include motor types (e.g., DC, AC), feedback systems (e.g., encoders, resolvers), control algorithms (e.g.,
PID), communication protocols (e.g., CAN, EtherCAT), and tuning methods for optimal performance. Practical
experiments, simulations, and hands-on projects can deepen understanding in this field.

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CITS : E & H - Electronics Mechanic - Lesson 237 - 241