The definition and characteristics of DC stepper motors

Posted by chengmin23 from the General category at 30 Aug 2023 06:30:48 am.

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A DC stepper motor is a type of motor that can convert electrical signals into mechanical motion. It controls the movement of the rotor by continuously switching on and off current. A DC stepper motor realizes the movement of the rotor by changing the position and size of the electrode magnetic field. It mainly consists of the stator, rotor, magnetic field device, and other parts. When the current flows through the stator coil, a magnetic field is formed around it, and the rotor is adsorbed in this magnetic field. At this time, as long as the direction and intensity of the current are changed, the magnetic field will change accordingly, and the rotor will also rotate accordingly, thus achieving step motion.

Characteristics of DC stepper motors:
DC stepper motors have many advantages, including the following:
1. High torque accuracy: Small DC motor has high control accuracy and stable and reliable output torque.
2. Strong environmental adaptability: Small DC motors have excellent performance in dust, water, and shock resistance, and are suitable for use in various environmental conditions.
3. Small size and light weight: Small DC motor is compact in all parts, small in size and light in weight, and easy to carry and use.
4. High self-locking performance: The stepper motor can achieve self-locking based on changes in control signals, resulting in low standby power consumption and high efficiency.
5. Simple control: The control of stepper motors can be achieved through microprocessors or control chips, with simple circuit design and low cost.

DC motors are widely used in computer peripheral devices (such as magnetic disks and optical disk storage), household appliances, medical devices, and electric vehicles. The rotor of brushless DC motors generally uses magnetic steel composed of permanent magnet materials, which is widely used in industries such as aviation, aerospace, automotive, and precision electronics. In electrical equipment, in addition to DC electromagnets (DC relays, DC contactors, etc.), the most important application is in DC rotating motors.

In power plants, the exciter of synchronous generators and the charger of batteries are DC generators; The prime mover of the boiler powder feeder is a DC motor. In addition, in many industrial applications, such as large steel rolling equipment, large precision machine tools, mine winches, urban trams, cable equipment, and other places that strictly require consistent linear speed, DC motors are usually used as prime movers to drive working machinery. A DC generator is usually used as a DC power source to output electrical energy to the load; DC motors serve as prime movers to drive various production machinery and output mechanical energy to the load. In control systems, DC motors have other uses, such as speed measuring motors, servo motors, etc., which utilize the interaction between electricity and magnetism to convert mechanical energy.

Tags: definition, characteristics, DC stepper motors

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Posted by hipohaha at 30 Aug 2023 06:30:48 am.