Voice Coil Motor (VCM) using permanent magnets
Electromagnetic actuator with high responsiveness and bidirectional operation.
The voice coil motor (VCM) is an electromagnetic actuator that achieves high responsiveness and bidirectional operation. Therefore, by combining it with a driver circuit, it enables various movements that are not possible with conventional solenoids. 【Features】 ■ Generates force by utilizing the interaction between the magnetic field produced by a permanent magnet and the current flowing through the coil. ■ Linear bidirectional operation. ■ The movable part is the coil, allowing for weight reduction and thus high responsiveness. ■ Due to the good linearity of the "thrust: current" characteristic, it can be used in open control when combined with a return spring mechanism. ■ By performing closed control in combination with sensor circuits and drivers, precise movements can be achieved.
basic information
【Characteristics】 ■ The "Thrust: Current" characteristic has a precise proportional relationship. ■ The "Thrust: Stroke" characteristic is constant. ■ The inductance is low. 【Other Applications】 ■ Shortening both lead wires of the coil can achieve a damping effect. ■ It is also possible to generate electricity. ■ Can be used as an intrinsically explosion-proof electromagnetic actuator, as it possesses a large inherent energy from the permanent magnet, allowing thrust generation even with small currents. ■ Not only used as an actuator but also has applications as a sensor. ■ We also offer a MM (Moving Magnet) type VCM that does not experience repeated stress on the lead wires.
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Applications/Examples of results
■ Tension Control ■ Wave Generator ■ Vibration Isolation Table ■ Push Button Life Test Machine ■ Vibration Exciter ■ Vibration Stimulation to Biological Sensory Devices ■ Semiconductor Equipment Manufacturing: When securing and holding semiconductor components, it can be handled gently, quickly, and reliably to avoid damaging the workpiece for head driving purposes. (Example) Die Bonder, Wire Bonder, Chip Mounter ■ Other customer ideas will expand the scope of VCM's applications.
