Adaptive pole-zero cancellation in grinding force control

Abstract

Describes the development of an adaptive force controller for the grinding process. Using a real-time grinding model an adaptive pole-zero cancellation technique is developed and implemented to reduce the grinding process variation. Real-time model parameter estimation and controller designs are implemented to achieve higher bandwidth control capability than is presently available in machine tool controllers. The results of this research have culminated in a stable adaptive force controller for grinding, and have demonstrated the potential for increasing productivity. The implementation of this adaptive pole-zero cancellation in force controlled grinding provides a superior surface following capability for fine finishing, as compared to fixed gain controllers.