Before revision: In mechanical engineering and control engineering, a servomechanism (also called a servo (to be differentiated from a servomotor, which may also be called "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: itsIn mechanical engineering and control engineering, a servomechanism (also called a servo (to be differentiated from a servomotor, which may also be called "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.