A stepper motor is a mechanical part that uses the displacement number of an electric pulse signal to work. Its application has developed rapidly, from simple mechanical equipment to stage lighting, whether it is a small-scale stage lighting medium-sized equipment theater, It is still night lighting such as high-rise buildings or bridges. Small and medium-sized stages can use the low-speed movement of the actual lighting beam of the stepper motor to change Purifier motor the color of the light. At this time, the most needed is the cooperation of horizontal rotation and raising the rotation motor. When moving, if the drive motor vibrates or the rotation speed fluctuates, the beam shake will increase when the irradiation distance is long. The stepping motor below will explain the methods of zero calibration for you, mainly: 1. Select a special motor drive chip with stall detection. When this kind of chip is stopped, the motor can immediately detect that the motor is in the stopped state, and then determine the zero position. However, this method has poor versatility, and there is a certain demand for the current phase of each winding of the stepper motor, and this method cannot be used in the microstep driving method. 2, sensor method. This method installs a position sensor such as a Hall switch and a photodiode at the zero position. When the stepper motor returns to the zero position, the sensor gives a detection signal. When the control circuit detects the signal, the motor stops at the zero position. This zeroing method is accurate and reliable, but it increases the complexity of the circuit and has a certain demand on the device. 3. Direct return to zero method. This method installs a stop block at the zero position, and then makes the stepper motor drive a sufficient viewpoint in the direction of the zero position. When the stepper motor returns to the zero position, it is blocked by the block, and the stop position of the motor is the zero position. This zeroing method is simple, but when the motor is blocked by the stopper, it will still drive the motor to perform the zeroing action, so it will not only cause damage to the stepper motor and the transmission mechanism, but also violent vibration and large noise will occur.
