Accuracy of measurement is the basic factor of magnetic levitation quality
Depending on the cutting speed, the tool, the feed rate and the cutting force of the material during the milling process, it can be measured in a rotor with magnetic bearings. The measurement data can be used directly for process control to optimize the overall operation of the machine. The high cost of software can be reduced by multiple uses. For fast microprocessors or general chips, the final hardware cost is twice that of a power amplifier, but it may be reduced in the future.
It is now possible to look into the future direction of magnetic bearings. The new magnetic bearing may be the highest level of hardware integration of the control components, which reduces its standardization. They are power components that are generally integrated with logic control. On the one hand, such development requires a large scale of production, and on the other hand it requires an economic solution.
The component rotor of the magnetic bearing system is clearly the central component of the magnetic levitation system, so a rotor model must be built. Assume that the rotor is a rigid body. The flexible rotor is not discussed here. A rigid rotor with two radial bearings and an axial bearing to bring it into the reference position. The axial suspension of a single degree of freedom is smaller than the radial suspension. Sensors, controllers, and amplifier sensors are used to measure the motion of the rotor. The accuracy of the measurement is a fundamental factor in the quality of the magnetic levitation.
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