We often hear the term "servo system," also known as a follow-up system. It is a feedback control system used to accurately follow or reproduce a process, consisting of a controller, power drive, feedback device, and motor. The functions and classifications of servo systems are also diverse.
Main functions of servo systems
The main functions of a servo system include controlling an output shaft located at a distance from the input shaft to achieve remote synchronous transmission without mechanical connection; enabling the output mechanical displacement to accurately track electrical signals, such as recording and indicating instruments; and controlling high-power loads with low-power command signals.
Servo system classification
Based on the structural characteristics of the system, it can be classified into single-loop servo systems, multi-loop servo systems, open-loop servo systems, and closed-loop servo systems.
Based on the nature of their constituent components, servo systems can be classified into electric servo systems, hydraulic servo systems, electric-hydraulic servo systems, and electric-electric servo systems, etc.
Based on their driving components, they can be divided into stepper servo systems, DC motor servo systems, and AC motor servo systems.
Based on the physical properties of the system output, systems can be classified into velocity or acceleration servo systems and position servo systems, etc.
Based on the characteristics of the components and the signal action features contained in the system, servo systems can be classified into analog servo systems and digital servo systems.
