Negative selection algorithm of fault detection and diagnosis for liquid-propellant rocket engine

A new fault detection and diagnosis method for liquid-propellant rocket engine was proposed,based on the negative selection mechanism of biologic immune system.The method was analyzed and improved from some aspects such as the generation of appropriate detectors and utilization in fault diagnosis.Verified results with real ground test data of engines show that the method proposed is effective.It can improve the training efficiency,real-time ability and veracity of fault detection and diagnosis effectively.