Slow step motor applied in electric curtain deceleration stepper motor has been widely used in the automatic industry, not only on the home, also has a good application. Gear motor is by reducer (Gear box)+ motor, motor provides a high-speed rotation speed, but small torque, inertia is big; The function of the speed reducer is reduce speed and increase torque, reduce the inertia, has reached the ideal rotate speed and torque; Speed is low, so demand larger torque electric curtain used to decelerate stepper motor. Common to the low speed, low inertia characteristics of products in addition to the electric curtains, and electric gate, etc. As people's living standards increasing, people's housing concept changed, a large French window for people to enjoy comfortable in the form of more and more popular, the traditional hand pull the curtain can not meet the requirement of the large floor-to-ceiling Windows, practical, hand laborious. So large floor-to-ceiling Windows usually equipped with electric curtain, through the opening and closing of the curtain, curtain drive control time, solved the problem of the large curtain hand not convenient. This article to slow down the application of step motor in electric curtain. Slow step motor supporting an electric dc motor drives of the curtain, which include a master CPU unit, has been flow motor unit, a unit of electromagnetic clutch, a photoelectric signal plastic unit, a 4 August 5 communication translation unit, an instruction and input unit, a wireless receiving unit and a power supply for the units of the dc power supply unit; Described the electromagnetic clutch unit, dc motor unit, photoelectric signal plastic unit, 4 August 5 communication conversion unit, instructions and input unit, wireless receiving unit are described with the master CPU unit connection. Its advantages in using photoelectric switch signals, and with low cost, high performance of the circuit topology to implement remote control the opening and closing function of the curtain, make its processing system more stable. Stepper motor is the electrical pulse signal into angular displacement or linear displacement of open loop control stepping motor. In the case of the overload, motor speed, stop position depends only on the pulse signal frequency and pulse number, and not affected by load change, when the stepper motor driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed Angle, known as the 'step Angle', its rotation is based on the Angle of the fixed step by step. Can be controlled by controlling the pulse number of angular displacement, so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control motor rotation speed and acceleration, so as to achieve the purpose of regulating. Simple said stepper motor can be fixed length constant speed control, for example, table 1 meter, speed can be set freely, and some common examples the application of milling machine work devoted into the motor. The difference between the two is the stepper motor can be constant speed, time,Want to go how long, how fast can be set); Reducer speed is determined by reduction ratios, cannot adjust how quickly speed; But the stepper motor torque is small, gear motor torque. Stepper motor, which can be fixed length constant speed control, for example, table 1 meter, the speed of 500 r/MIN, but reduction motor can't do that, if the gear motor is the three-phase asynchronous, it through the gear box to slow down, but the speed is not good, through the inverter speed regulation, and also do not say how much I want to go travel, it in order to realize step motor function (Fixed-length control of motor speed), and inverter and encoder. Larger additional gear motor and stepping motor general force are not very big, big step deceleration machine can force. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: