Gate drive system with the permanent magnet synchro- nous motor drive and latest infinite variable speed inverter control technology is adopted. The best curve of shutter speed of the door can be achieved, and its opera- tion with the xfeatures of energy saving. High efficient, reliable and simple operation can fully satisfy the demand for the modern people to seek for the enegy-efficient producs in the way to be used easily. Compact mechanical structure can be widely applied to different sites such as residential buildings, commercial buildings, hotels and other places different requirements.