This paper presents a mew algorithm for variable structure control systems. In the proposed algorithm a VEViable strnctnre controller for low moment of inertia systems has been discnssed. The concept nses the position and velocity loop independently at different instants of time. Switching from position loop to velocity loop generates sliding mode motion. The proposed method requires only one switching. Chattering is totally absent. The algorithm has been tested successfully in printed circuit DC motor throngh computer simulation aa well as practical implementation. The practical controller is a hybrid one where adog, digital and au IBM PC has been used to verify the concept. © 1992 by IEEE Singapore Section.