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The influence of different degrees of high reverse-bias stress on high power light-emitting diodes (LEDs) was investigated based on the aging of LED devices under the stress of 85 °C / 85 % RH. GaN-based blue LEDs were respectively tested by negative Human-Body-Mode (HBM) electronic static discharge (ESD) at −1000 V, −2000 V, −3000 V, −4000 V and −5000 V. The electrical performances and optical performances...
In this paper, a stabilization problem for a class of multiple-input multiple-output nonlinear systems is considered, where both the nonlinear term and the nonlinear uncertainty are mismatched and subject to time—varying delay. Under the assumption that the delay is known, a adaptive observer is designed, and the observer only has one adaptive parameter no matter how high the order of the system is...
The traditional triangulation algorithms in multiview geometry problems have the drawback that its solution is locally optimal. Robust Optimization is a specific and relatively novel methodology for handling optimization problems with uncertain data. The key idea of robust optimization is to find the best possible performance in the worst case. In this paper, we propose a novel approach which solves...
Organic Rankine Cycle (ORC) is particularly suitable for the recovery of energy from low-quality heat sources. In this paper, based on robust theory, a multivariable robust controller was designed for an ORC system. This simple-structured and easy-to-realized controller does not require a precise math model. The integral action included in it compensates unknown factors of the plant. The simulation...
With the economic developments, high speed railway has been paid many attentions in China and medium- short term planning of Chinese high speed railway network has been formed and most of the railways have been started into operations. In this paper, graph theory and complex network theory are adopted to assess the reliability of Chinese high speed railway network. The topological characteristics...
It' s a key problem to design an effective control strategy for unit plant coordinated control system to improve the automatic control level in thermal engineering. The algorithm of the generalized predictive control (GPC) is extensively used in academic and industrial fields for its simple modular parameters, distinctive robustness and stability. In this paper, from the model of a 500MW boiler-turbine...
Chinese high speed rail network has been given more and more attentions recent years, and it is adopted to improve the whole developments of society. Medium-short term planning of Chinese high speed rail network is given and the topological structure of Chinese high-speed rail network is discussed to investigate the reliability of network based on complex network theory and graph theory. Several parameters...
Partial occlusion is a difficult problem in computer vision since whether the object is changed or occluded is ambiguous, especially when distinguishing it only from the object boundary. In this paper, we proposed a novel idea to solve this problem by taking shape matching as a morphing processing. A mass-spring model is constructed from the point set which is sampled from a template (or reference)...
This paper presents the robust Hinfin filter design for stochastic systems with time-varying delay. The aim is to design a stable linear filter assuring exponential stability in mean-square and a prescribed Hinfin performance level for the filtering error system. Based on the application of the descriptor model transformation and free weighting matrices, delay-dependent sufficient conditions are proposed...
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