Stepper motor is one of the common motors in our life. As the name suggests, a stepper motor rotates according to a series of step angles, just like people going up and down stairs step by step. Stepper motors divide a complete 360 degree rotation into a number of steps and execute the steps in sequence to achieve a specific rotation, while controlling the number of pulses to control the amount of angular displacement to achieve the purpose of accurate positioning. If you have special needs, you can also control the speed and acceleration of the motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation.
Stepper motor has simple structure, easy control, high safety, and can output large torque without reducer at low speed. Compared with DC brushless and servo motor, it can realize position control without complex control algorithm nor encoder feedback.
In recent years, with the development of microelectronics and computer technology, the combination of software and hardware control has become mainstream, i.e., the program generates control pulses to drive the hardware circuit. The microcontroller controls the stepper motor through software, which better exploits the potential of the motor. Therefore, the use of microcontrollers to control stepper motors has become an inevitable trend, but also in line with the digital trend of the times. Stepper motors are mostly used in external devices of digital computers, home appliances as well as printers, plotters and disks. The following figure shows the main applications of stepper motors, from which we can find that stepper motors have been widely developed in all aspects of life.
Here we will start from the role played in various applications, to take you together to have a visual understanding of the stepper motor application scenarios.
Printers.
Camera.
In photography and videography, the optical and digital zoom adjustment of the lens is adjusted step by step in equal proportions of change. Compared with the traditional mechanical cam zoom, autofocus has obvious advantages in both accuracy and focus speed, with the help of stepper motors to control the lens for focal length adjustment and brightness adjustment of the shooting object, which can help more non-professional users to shoot satisfactory works.
Air Conditioning.
We often encounter troubles with the direction of air supply in the process of using air conditioners. We want to enjoy coolness but do not want to be blown directly by cold air for a long time. The louver structure of the air conditioner indoor unit is designed to meet this demand. With the multi-position adjustment of angle and amplitude by stepper motor, the direction of air supply of the air conditioner can be effectively controlled to realize letting the wind blow in the direction the user wishes.
Astronomical telescopes.
Similar to photographic and video applications, stepper motors are particularly well suited for focal and angular adjustments in astronomical telescope applications. By using programmed stepper motors to control the telescope, more convenient automated functions can be added to the telescope. For example, with the associated astronomical map and location of the object to be observed, the stepper motor will control the telescope to automatically search for and track the stars located by the controller or computer, allowing the user to more quickly discover the target they wish to observe.
There are many other applications of stepper motors in life, such as all kinds of home appliances and electric toys.
For more information about stepper motors, please continue to pay attention to Vic tech motors.
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Post time: Mar-21-2023