What is the difference between electric toothbrush motors?

Linear motors, also known as linear motors, linear motors, linear motors, actuator motors in the actual industrial applications of the steady growth, proving that linear motors can be used with confidence. Linear motor is a direct conversion of electrical energy into linear motion mechanical energy, without any intermediate conversion mechanism of the transmission device. It can be seen as a rotating motor by radial section, and spread into a plane. Linear motor and rotary motor, compared with the following characteristics: First, the structure is simple, because the linear motor does not need to rotary motion into linear motion of the additional devices, thus making the system itself greatly simplified, the weight and volume greatly reduced; Second, high positioning accuracy, in the need for linear motion, linear motors can be realized in the direct transmission, and thus can eliminate the intermediate links brought about by a variety of Positioning error, so the positioning accuracy is high, such as the use of microcomputer control, it can also greatly improve the positioning accuracy of the entire system; Third, fast response speed, high sensitivity, good followability. Linear motors are easy to do with their motors with magnetic levitation support, thus making the motors and stator always maintain a certain air gap between the stator and the stator without contact, which eliminates the contact friction resistance between the stator and the motors, which greatly improves the system's sensitivity, rapidity and spontaneity; Fourth, the work is safe, reliable, and long service life. Linear motor can realize contactless transmission force, mechanical friction loss is almost zero, so fewer failures, maintenance-free, and therefore safe and reliable work, long life. Ordinary electric toothbrushes are mostly rotary motors, less than linear motors have advantages. Sega has a linear motor electric toothbrush.