Guojin Chen

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According to the requirements and features of the detection of dampening quantity delivered in modern printing production, a new method has been applied in this paper, which is to use optical fiber and sensor technology to realize the direct dynamic detection of the thickness of dampening film. The detection principle has been analyzed and the structural(More)
The case-based reasoning is suitable for the solving of large scale, high intelligent and unstructured problems with complicated tasks because it could help us obtain knowledge conveniently, understand easily, and also could enlighten thinking. The case-based method was introduced in quality control field for the offset printing on the basis of the analysis(More)
Aiming at the subjective limitations of the traditional condition monitoring and evaluation methods for the power transformer, the condition assessment method of the transformer state based on the dynamic gray target theory is used to evaluate and diagnose the operating condition and the fault mode of the transformer. The probabilistic reasoning mechanism(More)
Flocculating river water and adding CLO/sub 2/ into the inlet and outlet of the cooling water system can effectively raise water quality, lower turbidity, eliminate alga microorganisms in the cooling water and reach the standard of the cooling water for power plants. In the paper, the effects of flocculation and algae removal in the cooling water treatment(More)
The image preprocess is the first course after image sampling in an auto-focusing system based on the definition recognition technology. The image preprocess includes converting image data format, filtering for noise removal, reducing ray disturbing and so on. Considering the features of CMOS sensor's imaging, the paper discusses the image quantization(More)
Aiming at the problems of the traditional transformer cooler's control system, the paper developed the intelligent control system of the transformer cooling based on the DCS dual PLC. The DCS and dual PLC's redundancy, the intelligent motor controller, the system's centralized monitoring platform, and the environmental control system achieve the monitoring,(More)
For the high-power low-speed diesel engine’s performance and reliability evaluation, this paper studies the engine’s running-in norms, presents the Test Scheme about the combustion process, the Inlet swirl control, the cooling system control, and the distribution and emission. The whole engine’s test methods and systems are established. By using the(More)
In view of the shortcomings on synchro-motion of slide carriage in hydraulic broaching machine driven by single cylinder, an electro-hydraulic servo system with dual cylinder is designed and its nonlinear model was presented. Then the theory of taylor expansion to second order of output vector, optimal control and nonlinear disturbance observer designing(More)