A linear motor is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism.
It can be regarded as a rotating electrical machine which is cut radially and developed into a plane.
Linear motors are also called linear motors, linear motors, linear motors, and push rod motors.
The most common types of linear motors are flat and U-slot, and tubular. The typical composition of the coil is three-phase, and the brushless commutation is realized by the Hall element.
Product advantage feature
A deformation of the rotary motor in terms of structure can considered as linear motor
A rotary motor cut along its radial direction regarded as linear motor, and then flattened and evolved.
- The structure is simple and no lateral edge effect.
- Suitable for high-speed linear motion.
- The utilization rate of the primary winding is high.
- It is easy to overcome the problem of unilateral magnetic pulling force.
- Easy to adjust and control.
- Strong adaptability and high acceleration.
Linear motors’ principle is based on Lorentz force, in which the combination of electric and magnetic force on a point charge due to electromagnetic fields. (If a particle of charge q moves with velocity v in the presence of an electric field E and a magnetic field B, then it will experience a force) F=q[E+(v*B)]
In addition, the use of magnet arrangement and multiple forcers can achieve multiple forcers’ independence movement on single-axis stators and without stroke restriction. Also nanopositioning control. can be easily realistic via matching the high resolution feedback system.
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Linear motors are mainly used in three aspects:
First, it is used in automatic control systems, and there are many such applications;
The second is as a drive motor for long-term continuous operation;
The third is to apply it in devices that need to provide huge linear motion energy in a short time and short distance.