Guo-hua Chen

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The amplitude–frequency relationship is an important mathematical property for a nonlinear oscillator. He’s amplitude–frequency formulation and the Max–Min approach are used to handle the conservative nonlinear oscillator ẍ +  1 + ẋ2  x = 0 for the amplitude–frequency relationship. The obtained result is compared with those in the open literature,(More)
In a digital control system, the dependency model between the actions of operators differs from that in a conventional control room because information sharing and the main control room (MCR) operations are team operations. Dependencies between the actions of operators are more common in a digital control system compared with a conventional control room(More)
For engine equipped with dual switch-type oxygen sensors upstream and downstream of the Three-Way Catalyst (TWC), an innovative dual-loop control model of excess air ratio is proposed here. The front oxygen sensor is used to perform PI feedback control of the closed-loop control factor that makes λ ripple periodically in the vicinity of 1. The rear(More)
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