Voice Coil Linear Motor, also known as Lorentz motor or scan mirror motor, is named for its structure resembling a loudspeaker's voice coil. It is a high-speed, direct-drive motor with fast response. The voice coil motor boasts zero hysteresis, zero cogging effect, high frequency response, high acceleration, high speed, good force characteristics, easy control, compact size, and low resolution. Abroad, the voice coil motor is considered an excellent servo drive device. Depending on the configuration of the drive, feedback, controller, and control algorithm, voice coil motors typically achieve a motion frequency of 500-1000Hz, even higher.
Compared to cylindrical coil motor, rectangular coil motor generates less thrust but has a longer stroke. Its thrust reaches 1000N and stroke can reach 250mm. The rectangular coil motor can be used individually and is an ideal product for generating X-Y axis motion. Its main market focus is in the semiconductor and micro-machine tool industry.
Its basic working principle is that when an electric conductor passes through a magnetic field, it generates a force perpendicular to the magnetic field lines, the magnitude of which depends on the length of the conductor passing through the field, the strength of the magnetic field, and the intensity of the current. The coil motor converts actual current into linear thrust or torque, with their magnitudes proportional to the actual current passing through. The magnitude of the thrust produced by the coil motor depends on the design structure and the intensity of the current: F = β*L*I. The relationship between current and the force generated is manifested as force sensitivity Kf in linear coil motors and torque sensitivity Kt in rotating coil motors. In our design, we define the unit of Kf as N/A and the unit of Kt as N·m/A.
Yunxi Electrical & Mechanical Technology Co., Ltd. of Langfang, a technology research and development enterprise in collaboration with universities, specializes in: DC frameless torque motors, voice coil motors, stepper motors, servo motors, and screw displacement tables; special products include: vacuum high and low temperature stepper motors, vacuum nuclear radiation stepper motors, vacuum high and low temperature screw platform, vacuum radiation screw platform, vacuum electrodes, and ion gauges. Custom development and design services are available according to customers' specific requirements.
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