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A nanometer scale alignment method of spherical concentric mirrors based on dual-beam interferometry is proposed, which is also the method to measure the defocus of concentric spherical mirrors. In the process of aligning the concentric spherical mirrors, the defocus can be measured real time with nanometer scale error. The experimental result shows that the method can achieve the defocus of the spherical...
A new extensible multi-function vehicle terminal system for multimedia advertising is designed, and the software and hardware design and realization method are also introduced. The terminal support remote release of text advertisement and audio advertisement and which was combined with the master server, vehicle LED screen, microphone, empty-car indicator light, taximeter to make up a multimedia advertising...
The main point of intelligent fault diagnosis theory is fault mode distinguishing principle based on data processing methods. Pointing to the problems of the traditional fault diagnosis mode, a fault diagnosis method based on the virtual instrument and neural networks is proposed. The signals collection and management based on virtual instrument is introduced, the basic method of the neural networks...
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