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Opposed Piston Two Stroke (OP2S) engines are widely used for its high power density and high thermal efficiency. For OP2S diesel engines, the scavenging process is accomplished by the pressure difference between intake chamber and exhaust chamber. 1-D model of OP2S diesel engine is built and the accuracy of the model is validated by tracer gas method. Based on the 1-D model, the influence of pressure...
In recent years, the ever-growing amount of documents on the Web as well as in digital libraries led to a considerable increase of valuable textual information about entities. Harvesting entity knowledge from these large text collections is a major challenge. It requires the linkage of textual mentions within the documents with their real-world entities. This process is called entity linking.Solutions...
Some of the main ranking features of today's search engines reflect result popularity and are based on ranking models, such as PageRank, implicit feedback aggregation, and more. While such features yield satisfactory results for a wide range of queries, they aggravate the problem of search for ambiguous entities: Searching for a person yields satisfactory results only if the person in question is...
How to promote the use of new information technology (IT) among employees has become a major challenge for enterprises' informatization construction. Most of the extant studies on the adoption of IT are based on the cognitive theory. By contrast, little research has been engaged in exploring the effect of emotions on the IT use. The aim of this study is to explore the relationship between emotions...
This paper present integrate robust control Method for High-power Variable-Speed Governor of Diesel Engine by loop-shaping theory. Diesel Engine working process and classical frequency control theory are combined to construct frequency restriction of engine speed; frequency compensator is utilized to improve the robustness of Multiplicative Perturbations and disturbance; loop-shaping method is applied...
This paper present robust Auto-MAP-Modify method for High-power Variable-Speed Governor of Diesel Engine by extended state observer. Firstly the uncertain between MAP parameter and real parameter is defined as additive-Perturbations. Secondly the original controller is reconstructed as a dynamic controller for sensitivity and noises, meanwhile a static controller for Auto-MAP-Modify. The H?? norm...
This paper presents active disturbance rejection control system for toggle-motor coupling servomechanism system. Genetic algorithm and mixed H2/Hinfin norm index are utilized to optimize the system parameters; Monte-Carlo method is applied to evaluate the robustness of the control system. Simulation results show that under the condition of external disturbance, parameters perturbation and coupling,...
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