DESIGN AND ANALYSIS OF ADAPTIVE CONTROLLERS FOR MILLING PROCESS

Adaptive control of peak forces in milling with slender cutters is addressed. The dynamics of the milling process is modelled as a first order discrete system. A systematic design of adaptive PID and Pole-Placement controllers is presented. The performances of the two controllers are compared using simulations and real time machining experiments. It is shown that when the time varying cutting process and time invariant feed drive transfer functions are accurately identified and decoupled, the adaptive controllers can be successfully applied to machining processes.