Abstract: At present,the problems concerned permanent magnet synchronous motor consists of the complexity of driving algorithm,the narrow selection range of chips and the high cost of available DSP chip.To solve these problems,a research on permanent magnet synchronous motor using new driving algorithm is performed,and the application of permanent magnet synchronous motor in the door-motor control system of elevator is also studied. The requirement for the accuracy of door-motor system of elevator can be satisfied by new driving algorithm,and the engineering cost can also be greatly reduced. The simplification of algorithm can be realized by the proposed new driving algorithm of permanent magnet synchronous motor,and which can be achieved by Philips chip of LPC1752. The waveform of experimental output current is given,the experimental result shows the effectiveness of implementation with the proposed new drive algorithm.