关键词: 非线性系统, 故障检测, 忆阻器, 分岔, 混沌电路

Abstract: In order to further explore the practical application value of chaotic circuit system, we take the nonlinear chaotic circuit as the research object, established a new kind of chaotic circuit system with multiple memristor elements, and introduced its application about circuit fault detection of tracked tractor. Through the nonlinear theory analysis of the chaotic characteristics of the system, the normative type and the bifurcation theorem are combined, and the supercritical Hopf bifurcation of the system occurs around the timedelay bifurcation point τ=τ0=0.785 4, and when the value of the hysteresis parameter τ continues to increase, the attractor state of the system will change from stable to chaotic (τ>1.57). Based on the numerical sensitivity of chaotic system to delay parameter, the delay chaotic system is applied to the fault detection of engine circuit of tracked tractor， according to the feedback signal value τm、τ、τn three sizes of early warning, τm<τ<τn fault warning, τ over τm、τn fault alarm and the circuit detection block diagram and flow chart are given.

Key words: nonlinear system, fault detection, memristor, bifurcation, chaotic circuit