Speaking of linear motors, the English is linearservomotor. speaking of which, in our common motors nowadays, are rotary motors. The history of the development of motors, from the history of the development of motors, to say the various types of functional applications and advantages of motors.

1, the principle of linear motor:

In the industry, the linear motor is also called "direct drive", so if you see direct drive, it is describing the linear motor and DD motor two kinds of products, the industry's direct drive is included in the DD motor.

The principle of a linear motor is not complicated. You can think of it as taking a rotating induction motor and cutting it open along a radius and flattening it out, and that's a linear motor.

If the corresponding to the rotating motor to understand, in the linear motor, equivalent to the rotating motor stator, called the primary; equivalent to the rotating motor rotor, called the secondary, the primary through the alternating current, the secondary in the electromagnetic force under the action of the primary to do linear motion.

From the point of view of electromagnetic induction to analyse: the above figure of two flat linear motor, (a) a flat linear motor, (b) for the double flat linear motor.

We take the situation in (b) to illustrate the change of electromagnetic force, the primary is the upper and lower sides, permanent magnets to provide a complete electromagnetic circuit. The wire in the secondary coil happens to be able to cut the electromagnetic inductive line, generating an amperometric force, and according to the left-hand rule, we can see that the secondary will move to the left, or to the right.

2、Types of linear motors:

1, flat motor

2, DD motor (direct drive motor)

This direct-drive form of DD motor can provide large torque.

3、Voice coil motor

Voice coil motor in principle, the same as the linear motor, can be simply understood as a linear motor with fewer turns of the coil.