PID Controller Based Automatic Solar PowerDriven Grass Cutting Machine

In this paper, an automatic grass cutting machine is designed and implemented that uses solar energy as its primary source. The proposed grass cutter is lightweight and portable. It has two major parts: one is a motor-powered base and the other is cutting blades with motor. Its default mood is automatic although it can be operated manually if necessary. It can detect the position of grass by a color sensor through specified band of green color signal and is able to move automatically towards the grass by its motorized controlled base. As soon as the motor driven cutting blade comes close to the grass, it starts cutting and continue until all grasses around it is being cut down. The prototype of the grass cutter is tested experimentally. The test result proves that, the grass cutter successfully performs its operation. Two degree-of-freedom PID controllers are proposed to control the motor speed of the prototype.