In physics, torque refers to the tendency of a force to rotate an object around an axis or fulcrum. Torque is a physical quantity that causes rotation of an object. It can be divided into the moment of force about an axis and the moment of force about a point. Rotating torque is also called torque or torque.

M=F×L

Among them, L is the distance vector from the rotation axis to the force point, and F is the vector force. Torque is also a vector quantity, and its unit is Newton-meter.

The concept of torque can be seen everywhere in our daily lives, from the seesaw we played as a child to Archimedes' famous quote - "Give me a fulcrum and I will move the entire earth." These all embody the meaning of torque. Similarly, torque is everywhere in cars, but through a series of rotations of the transmission shaft, the torque here is called torque. The size of torque directly affects factors such as power output efficiency, energy consumption, and even operating life and safety performance.

The difference between torque and torque
The ranges covered by the two are different, and the range of torque is wider. The result of all forces multiplied by the moment arm can be called torque, but torque generally refers to the torque experienced by a rotating object. For example, when the wheel rotates, the product of the ground friction and the wheel radius is generally called torque, but it is also a type of torque. Using a bottle opener to open a beer bottle is generally called torque, not torque.

The difference between torque and torque
The force couple or torque that causes the machine components to rotate (including the tendency to rotate) is called rotational torque, or torque for short. Any component must undergo some degree of torsional deformation (which may include elastic deformation and plastic deformation) under the action of torque. Therefore, it is customary to call the rotational torque the torsional torque, or torque for short. The two can be mixed in any field, but torque is more commonly used in engineering technology.

Torque, torque and torque are actually the same in motors. Generally, in the same article or the same book, only one of the above three nouns is used, and it is rare to see two or more used at the same time. Although these three words are used in different situations, in motors they all refer to the driving "moment" generated by the rotor winding in the motor that can be used to drive the mechanical load. The so-called "moment" refers to the acting force and the fulcrum and force action product of distances perpendicular to directions.