Study of the Trend Prediction Method Based on Max Lyapunov Exponent for Rotating Machine Sets

Develop condition prediction is very important for sets’ safe operation. Due to the nonlinear and Non-Stationary running condition of the equipment max Lyapunov exponent is introduced to the fault trend prediction of large rotating mechanical sets based on chaos theory. Two methods of proposing ∧ f and ∧ F are discussed and the arithmetic of max prediction time of chaos time series is provided. Experiment data analysis of large rotating machine shows that this method has excellent performance for condition trend prediction. Key word: Max Lyapunov exponent Large rotating machine sets Developing condition prediction