控制步进电机项目程序：综合考虑工作模式、加速启动，减速停止曲线；以及置步数等因素，决定在该时刻，电机的驱动速度。-stepper motor control project : considering the mode, speed up start, stop slowdown curve; home and steps and other factors, the decision of the moment, the motor-driven speed.