Chatter-less sliding-mode controller for DC motor

Abstract

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.