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Based on SD memory card, the communication & storage system of the embedded portable spectrometer was designed, so the spectrometer can save data and change the analysis model files. In the system, SD card was used to store data files, and the communication function was designed by using serial port to send the file and command and receive the file. So the system can be used to accomplish uploading...
A new method for CAN-based multi-motor synchronous system is presented. A PMSM driver with CAN interface was designed, and the software with the function of synchronous control is also completed. The communication protocol is designed, and effective anti-interference measures are adopted to ensure good electromagnetic compatibility. The clock synchronization of different devices in the system is implemented...
The acoustic boundary element method is applied to solve the Helmholtz boundary integral equation for the sound field problem in the exterior region. Basing on the acoustic boundary element method, the SYSNOISE software is used to numerically calculate the far field sound pressure in the exterior region of piezoelectric micromachined ultrasound transducer array. On the other hand, according to given...
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