A control system is a system that regulates the behavior of other systems or devices. There are two main types of control systems: and . In an open loop control system, the output does not depend on the of the system, whereas in a closed loop control system, the output is fed back to the input to make adjustments.
The closed loop control system uses feedback from a to compare the actual output with the . The difference between the reference input and the actual output is known as the signal]]. The then processes this error signal and sends a command to the to make necessary adjustments.
There are various types of controllers used in closed loop control systems. The adjusts the output proportionally to the error signal. integrates the error signal over time to eliminate any steady-state error. combines proportional, integral, and control to improve system response.
The actuator is the component that takes the command from the controller and translates it into physical motion. There are different types of actuators such as , , , , , , and . (PWM) is a common technique used to control the speed of actuators by varying the duty cycle of the signal.
Keywords
[[error | electrical actuator | actuator | integral control | open loop control system | pulse width modulation | servo motor | stepper motor | piezoelectric actuator | solenoid | pid control | controller | feedback | sensor | proportional control | closed loop control system | reference input | brushless dc motor | derivative | linear actuator |
