Abstract: The cam lift data is analyzed (110) through the use of a fast fourier transform (FFT) (116) to thereby obtain FFT coefficients (118) which define the amplitude and frequency content of the cam lift data. Through a combination of the kinematic model and an inverse FFT procedure, an axis control function including a position control function (Eq. 1 and Eq. 14) is determined (128) for each axis. Dynamic compensation (130) of each axis is provided for system lags and inertia loads by altering the axis control function as a proportion of the axis velocity and acceleration (130), respectively. For each controlled axis an independent vector and a corresponding dependent vector containing axis control data is generated (132). During the actual control of first and second drive motors (72, 70) of the grinding machine, position and velocity feedback signals are generated for each axis by feedback devices (82, 78).

Abstract: A grinding adaptive control system and method is described which automatically determines the feed rate to maintain constant wheel sharpness without wheel breakdown. Wheel sharpness at a given feed rate is sensed by the steady state horsepower or normal force, the adaptive control progressively adjusts feed rate in response to changes in wheel sharpness until a steady state feed rate range is reached. Wheel sharpness will then remain essentially constant.