Improved bat algorithm optimization ELM-based fault diagnosis method of engine fuel system
A fuel system and bat algorithm technology, which is applied in the field of engine fuel system fault diagnosis, can solve the problems of low accuracy and long time of diagnosis results
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[0055] Embodiment 1: A kind of engine fuel system fault diagnosis method based on the improved bat algorithm optimization ELM, first utilize sensor to collect the vibration signal of fuel system in real time and extract its characteristic vector; Then use bat algorithm to optimize the weight of extreme learning machine and threshold, build the network structure of the optimized extreme learning machine; then input the extracted feature vector into the optimized extreme learning machine for training to obtain the engine fuel system fault diagnosis model; finally use the engine fuel system fault diagnosis model to carry out engine Fuel system fault diagnosis.
[0056] Taking the fuel system of a certain type of diesel engine as the research object, the sensor is used to collect the fault signal, and Matlab2010b is used as the experimental platform. The original signal is decomposed and reconstructed by wavelet 3-layer decomposition, and finally 8 characteristic parameters are ob...
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