Papers by Author: Dong Hai Chen

Abstract: With the computer image processing and technology development, vision sensors in mobile robot navigation and obstacle recognition was paid more and more attention. In this paper Adaboost algorithm is used to identify obstacles of intelligent wheelchair in Visual c + +6.0 platforms. With the AdaBoost algorithm training strong classifier for obstacle detection, then use the classifier to detect the target obstacle. Fuzzy neural network is used to fusion sonar information and visual information of wheelchair make the obstacle avoidance path of the wheelchair to be more intelligent and optimization.

Abstract: Ultra-precision machine tools is an important machinery equipment to implement ultra-precision machining. Current development and the trend of the ultra-precision machine tools was analyzed. The factors influencing machining accuracy were pointed out from the viewpoint of system. Some suggestions were put forward on the domestic development and research of the ultra-precision machine tools.

Abstract: The support vector machine technology is applied to study the fault diagnosis for supercharge system of diesel engine. Based on the different features under various faults of supercharge system of diesel engine and the signal variables of the fault of the system’s components, dimensionless daters can be gotten after normalization processing. The utilization of SVM with good generation ability wad adopted to establish the diagnosis model for supercharge system of diesel engine, which can make the system failure diagnosis through inputting the diagnosis data. The average accuracy is 99.8% in twenty tests. The diagnosing results are consistent with the factual results.