Before revision: In control engineering, a servomechanism, usually shortened to servo , is an automatic device that uses also called a servo or a servo system, is a control system for the position and time derivatives (for example, velocity) of a mechanical system using closed-loop control to reduce steady-state error and improved dynamic response.
After revision: In control engineering, a servomechanism, mechanical engineering and also called a servo or a servo system, is a control system for the position and time derivatives (for example, velocity) of a mechanical system using closed-loop control to reduce steady-state error and improved dynamic response.