DC motors, as an important device for achieving the mutual conversion of mechanical energy and DC electrical energy, have broad application prospects in fields such as power, transportation, and industrial production. Faced with future challenges and opportunities, the DC motor industry needs to constantly innovate and progress to meet market demand and achieve sustainable development.

However, despite the widespread application of DC motors in many fields, the challenges they face are becoming increasingly severe with the advancement of technology and the increasing environmental requirements. On the one hand, with the continuous development of AC motor technology, its performance has gradually approached or even surpassed that of DC motors, posing a threat to the market position of DC motors; On the other hand, the electromagnetic noise and interference generated by DC motors during operation also urgently need to be addressed.

In terms of application, DC motors are widely used in various situations that require precise control of speed and torque due to their excellent speed regulation performance and high starting torque. For example, in the fields of electric vehicles, electric tools, household appliances, etc., DC motors play a crucial role. In addition, in the field of industrial automation, DC motors are often used as actuators to achieve various automation control tasks.

Structurally, DC motors are mainly composed of armature, shaft, armature core, armature winding, commutator, and fan. The armature is the rotating part of the motor, responsible for converting electrical energy into mechanical energy; The shaft supports the armature and transmits rotational force; The armature core and armature winding form the magnetic field part of the motor, generating a magnetic field and interacting with the current; The commutator plays a role in changing the direction of the current, ensuring continuous rotation of the motor; The fan is used for heat dissipation to ensure that the temperature of the motor is suitable during operation.

There are several types of DC motors, including brushed DC motors, brushless DC motors, and coreless DC motors. Brushed DC motors use brushes to transfer current to the rotor of the motor, while brushless DC motors do not require brushes, thereby improving efficiency and lifespan. Coreless DC motors provide a high power to weight ratio, making them ideal for applications that require compact and lightweight design.