Fourier transform infrared (FTIR) spectrometer takes a significant role in monitoring the earth's environment and atmospheric pollution. Michelson interferometers are the main parts of FTIR, spectrometers. In order to provide uniform motion of the interferometer mirrors, a driving system based on ATMEL89C52 singlechip was described. With the help of laser interferogram, the system achieved not only uniform velocity but also precise position through feedback controlling. It satisfys the spectrometer's velocity demand.