Papers by Author: Yan Nian Rui

Abstract: The graft polymerization in radio frequency hollow cathode plasma (RFHCP) is suitable for the surface modification of large-area thin film materials. The homogeneity of plasma surface modification of large-area thin film materials has always been paid close attention, and it is also the key factor affecting the industrialized applications of the technique. However, the homogeneity of plasma surface modification is thought to depend greatly on the distribution of discharge gas. In this paper, a finite element model is proposed to discuss the flow of discharge gas in hollow cathode plasma. The concentration distribution of the discharge gas has been discussed by the combination of numerical simulation of fluid distribution and pipe flow theory based on the investigation of the transport property of gas under vacuum. Comparisons between available experiments have also been performed to validate the applicability and practicability of the proposed model.

Abstract: The discharge of RF hollow cathode far zone plasma has advantages of high ion concentration, easy to implement the processing of a large area, given more and more attention. The characteristics of hollow cathode plasma flow have a great relationship with the hollow cathode nozzle structure. How to design the hollow cathode nozzle discharge structure accurately and conveniently is the key problem of the hollow cathode far plasma surface treatment. This article builds a hollow cathode plasma discharge self-consistent model; derive the relationship between the discharge current of the hollow cathode plasma and the hollow cathode nozzle structure. Optimize the design of the hollow cathode discharge structure using discharge particle simulation software, to achieve a fast and accurate design and the purpose of efficient plasma surface modification.

Abstract: Through research on Pneumatic Conveying technology and the principle of Laval Jet, we completed the design of key parts of a mud dust conveying system used a new small trenchless drilling robot in municipal road construction.

Abstract: CRFHCP RF hollow cathode plasma graft polymerization has characteristics of discharge density, high discharging efficiency, good surface modification effect, discharge area and regional separation, applies to modify large area thin film material surface. The uniformity modifying large area plasma material surface is the technical difficulty related technical personnel has been concerned with, the key point restricting HCRFCP technology industrialization application too. This paper analyzes influence factors of the large area thin film materials plasma graft polymerization uniformity; applies simulation software and mathematical models; makes optimized design to the hollow cathode discharge electrodes and graft polymerization distributing pipe. The experiment proved, the uniformity processing large area battery diaphragm is better to apply the hollow cathode plasma graft polymerization, and is suitable for industrial application.

Abstract: This thesis introduces control approach for the elevator control system. From the intelligent control perspective of the elevator operation, better elevator service quality should be required. The advanced scheduling rules and the best dispatching mode should be adopted in control procedures to obtain control management. Group control algorithm does not solely rely on the passengers’ shortest waiting time as the goal, also using the fuzzy theory, neural network, genetic algorithm and expert system. All these factors including the passengers’ psychological impact and assessment of impending decision-making should be absorbed into the group control system, so it is a multi-objective control combined expert system with the current elevator operating status.

Abstract: This thesis introduces long-distance methanol monitoring system through catalytic combustion, describing its hardware structure and software module, achieving dynamic display of data, analysis, remote control and data management. It is an effective mode to use GSM network as information transport platform for wireless monitoring system, with advantages of simple principle, high security, wide spread and so on, valuing important in practical use

Abstract: Grey Classification is a method which can judge and analyse the matters in the Grey System. It is more reasonable and practical than other Optimal Design. By study of Grey Classification and the traditional method of multi-objective optimal design of helical gear transmission, we found out the most satisfied results.

Abstract: In this paper, the surface of non-woven polypropylene secondary battery separator was modified by Hollow Cathode Remote Plasma. The effects of treating parameters on separator’s properties were studied. The IR and SEM were used to analyze the chemical composition and the surface morphology. Using electrical chemical property measurement, the electrical chemical property was measured and analyzed. The results show that the hydrophilic group was imported on the surface of polypropylene after Hollow Cathode Remote Plasma modification, so that the wettability of the non-woven polypropylene secondary battery separator and the property of secondary battery were greatly improved.

Abstract: Seal leakage in medicinal high-speed grinder is one of the problems probe and research by equipment designer and user. In this paper, a new structure of seal is designed with a combination of micro-nano magnetic fluid seal and mechanical lubricating ring. Sealing structure has been optimized through tests on the reliability. Experimental results show that the method can better solve the seal leakage in Medicinal high-speed grinder.

Abstract: A new decoupling control structure is presented for complex special shape pipe welding process, which consists of model construction by reorganization method. Using this structure, an decoupling control system is established which realizes an adaptive decoupling control strategy for the welding processes with integrated complexities by using structure of decoupling control system and based on multivariable predictive function and nash optimization to making sure the right coefficient. Such system can be easily implemented on the welding peocess and simulation show this approach is effective.