Chatter-less sliding-mode controller for DC motor

DC motors are used in most industrial processes, robots, and CNC machines etc. The main parameters interested in control system are speed, accuracy, and steady-state error. A choice of Sliding Mode Controller (SMC) had been backed by its advantages as a high speed, more accuracy, and simple installation; however the drawback of using SMC is the high frequencies on the output called chattering phenomenon. This paper presents the design of a New Sliding Mode Controller based on state feedback controller (SMSFC), a new algorithm propose to reduce the chattering phenomenon by utilizing to reduce the gain value of SMC. Results have obtained it shows that the chattering is decreased up to 85% also the value of the gain controller is decreased (from 40% to 95%) especially in sliding phase, The results show a robust algorithm (more so than traditional ones) high accuracy and speedy response were achieved via external load and change in the system parameters.