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In this paper, active control for vibration reduction of a flexible marine riser is studied by using boundary control, adaptive control and Lyapunov's synthesis method. To achieve more accurate and practical dynamic behavior of the riser, the effects of time-varying internal fluid are considered in dynamics model of the riser. The signum function and adaptive boundary control scheme are design to...
Failure rate is a commonly used reliability measure for engineering systems. Accurately describing failure rate of a system often plays a crucial role in maintainability analysis and modeling. The failure dependency among components will accelerate the failure process of entire system. This paper proposes a new failure rate model with considering the failure interaction between components. Examples...
Key part failure of the vehicle engine often leads to its failure, while the cylinder liner failure is the main reason. In this paper, the basic theory of vehicle engine tribology was applied to analysis wear reasons and wear rules of cylinder liner. Meanwhile, the application of the ideal gas equation explored the relationship between the state of the cylinder liner wear and air leakage, which determined...
The bathtub-shaped curve is essential in interpreting the failure rate function for the reliability analysis, and its parameters determine the representation of the bathtub-shaped function. This paper introduces a parameterised bathtub curve that provides an adaptive bathtub-shaped failure rate function (ABF) modelling approach which can be also easily utilised as a universal objective for further...
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