| Currently, the system modulation has been widely applied in various fieldsand aspects of human life. Learning about the automated system in theory and practice need to be applied in order to develop and optimize how to use the automated system. Learning in practice it will become easier when supported byadequate learning tools. For that reason, in this thesis, the author will be designing electric motor controllers for mechanical load varies. Mechanical loading on the electric motor will reduce the speed of rotation of the electric motor. When loading has been given reduced, the electric motor speed will increase. It is necessary to control rotation has the function to keep the rotation speed of the electric motor remains stable. |