Papers by Author: Yang Li

Abstract: Vibration and radiated sound of Air Conditioning are harmful to environment and safeness. Air Conditioning Compressor is its major part bringing vibration. To lower noise of a compressor and to improve its sound characteristic, the paper probes into a method indirect measurement of vibration, which both vibration and radiation behavior is represented using acoustic signal and theory of radiation modes. The paper investigates on the basic coupling relationship between structural vibration and acoustic radiation by means of the real modal analysis theory. Besides, the vibration and acoustic radiation characteristics of the rotary compressor are identified through the experiment method. According to the experimental results, between the vibration modes and the acoustic radiation modes have the comparability about the parameters. Therefore, this paper put forward a new method to the Active Structural Acoustic Control (ASAC), and provides the theoretical foundation of indirect measurement of vibration by using acoustic signal.

Abstract: Today, in china the train dispatching problem and the problem of scattering the sudden passenger flow in minimal time widely appear in railway transportation in spring festival season. We try to apply the computer network to the railway transportation net and solve the problem of scattering the passenger flow in spring festival by using the solutions in computer network. It puts forth a solution to the granularity queue management and the queue dispatching that combines the QoSFR model with the temporary passengers' transportation program during the spring festival season. We should analyze the problems from the perspective of network technology and build up the model of solving spring festival transportation problem by using the solutions to network blocking problem in order to mitigate the serious spring festival transportation problem at present.

Abstract: The research starts from the railway Spring Festival Passenger Transport problems which exposed in the natural disasters, introduces the conception of Scale Free Networks in Chinese railway Passenger Transport system, focus on discussing the characteristic of Chinese railway Passenger Transport system and other related problems, researches the characteristic of railway Spring Festival Passenger Transport, introduces the Petri nets to the “hub” nodes, takes the allocation of train resources and Evacuation of Passenger in emergency as examples, finish the modeling and analysis, it provides scientific research means and theoretical support for making Pre-planned Emergency Response Scheme for passenger pressure and disaster,enhancing the Fusion of multidisciplinary and enhancing railway emergency response capacity