Fast Grinding Process Control with AE Modulated Power Signals

Power and acoustic emission (AE) are among the most commonly used signals for monitoring of grinding processes. The electric current at the main motor has being used to measure the grinding power. However its response is slow. The AE signal presents a fast response but its level can be highly influenced by external factors. This paper proposes a monitoring approach based on a new parameter called Fast Abrasive Power (FAP). The FAP is the modulation of the electric power by the AE signal dynamics. The FAP can be fast enough to detect sudden process variations and reliable enough to represent the grinding power.