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Aimed at the present maintenance training in the army, the virtual maintenance training system frame of a certain type of power station was designed by using the object model and virtual reality technology. The key technologies to build simulation models based on NGrain were studied, and the virtual maintenance training system was developed finally. Results show that the system has lots of advantages such as multiple training modes, friendly operation and low requests to hardware.

Since more and more complex or intelligent power electronic devices have been equipped, mobile power stations are more sensitive to overvoltage caused by lightning. The electromagnetic transient model of the mobile power station was built by PSCAD/EMTDC. After analyzing the faults induced by lightning overvoltage, a deep study of the simulation model was carried out to find the acting principles in power electronic devices and components. From simulation results we find out several laws to raise the lightning with-standing level of power stations concerning influencing factors such as the grounding resistance, SPD, etc‥ Aimed at the direct striking and the inducing lightning the key parts of mobile power stations were decided to take some innovation measures correspondingly. In the last, a modularized device was designed and equipped for the power station.

We successfully demonstrated the realization of fabricating protein sub-micro patterns for cell biology applications. To successfully generate the protein sub-micro patterns, some new designed procedures were involved into the DUV photolithography with micro contact printing process, such as TEOS film, RIE etching and AR3 coating. For the flexible aspect ratio requirements, TEOS film was added as a hard mask between photoresist and substrate for increasing the etching selectivity. According to our experimental results, the aspect ratio could be offered from 1.5 to 4.5 by RIE recipe tuning. When the pattern size is into sub-micro level, the sticking issue between silicon and PDMS will be getting worse. Besides, it also has very strong dependence with pattern sizes, pitches and shapes. We analyze the chemical mechanisms and select suitable material to be the buffer layer to avoid the crosslinking from these two materials. The AR3 layer was employed to be a buffer layer and successfully reduce the issue of pattern sticking. After that, we observed the neuron and cell outgrowth in these special designed protein sub-micro patterns. The investigated patterning process that combining with DUV photolithography and micro contact printing could be used to generate functional surfaces for cell biology applications