The problems in the field of magnetic suspension bearing technology

In the field of magnetic suspension bearing technology, the need to be addressed maglev rotor dynamics, high temperature magnetic levitation technology, micro power magnetic bearing technology, redundant fault-tolerant technology, and maglev key technology such as intelligent supporting technology. ( 1) Magnetic suspension rotor dynamics of magnetic suspension bearing rotor dynamics problem solving is good or bad, directly affect the control system design. Magnetic bearing supporting, however there is a big difference with the traditional bearing, magnetic levitation bearing with a feedback control loop cannot simply assume that in the middle of the dynamic new computing as a fixed value the stiffness and damping of the system. In addition, in order to reduce turbine loss when using magnetic levitation bearing, used on the rotor of the laminated structure of the form, the need for complex magnetic suspension bearing rotor, more accurate dynamic analysis of 2) High temperature magnetic levitation technology in special applications, such as high temperature magnetic suspension bearing system, improve its reliability test, simulate the real environment, break through the core technology of high temperature magnetic levitation bearing, and master the design method and manufacturing process. Both magnetic suspension bearing and displacement sensor, need high temperature insulated wire. At present, the international ceramic insulated wire is used to winding excitation coil and a magnetic suspension bearing pad sensor measurement of the coil, the highest working temperature is 1000 ℃, the insulated wire insulation layer thickness for micron level off edge meat porcelain, biggest weakness is in the winding coil and the working process of the insulating layer is easy to damage. Our country has yet to master the production of this kind of insulated wire technology, still can't produce this kind of high temperature insulated wire. ( 3) Micropower implantable artificial heart pump magnetic suspension bearing technology is the development trend of magnetic levitation heart pump, but due to the implantation in the human body completely, thus require the system to maintain the lowest power consumption, use of the magnetic flux of water provides biasing force, using electromagnetic force as a control, controller, power amplifier, tired to move the motor power consumption needs to be reduced to make it real to application. ( 4) If redundant fault-tolerant technology magnetic suspension bearing in failure can still fault-tolerant operation part features, and continue to provide the desired supporting force and maintain the stability of rotor system, will be a practical and effective method to improve the reliability of the bearing. So when local control or structural failure, containing redundant magnetic suspension bearing system failure status of supporting structure feature extraction, and over against the failure of identities in the process of supporting to refactor standards and key technical problems such as control strategy, establish to adapt to the complex failure condition of the magnetic suspension bearing, the reconfiguration control model of redundant supporting and put forward the corresponding control strategy, improve the reliability of magnetic suspension bearing under complex conditions and service life ( 5) Maglev intelligent supporting technology of magnetic suspension bearing system performance quality directly decides the high-end equipment in service functions, in extreme environment, complex magnetic suspension bearing face load mutation, nonlinear disturbance, temperature rise, overloading, and a series of complicated flexible foundation status, the supporting magnetic field inevitably exist in multidimensional non-stationary, the conventional magnetic suspension bearing the face of the phenomenon; So the changes of characteristic of the magnetic suspension bearing system supporting for high-end equipment performance impact? How to load characteristics match? How to solve such a high order non linear, strong, multiple input multiple output between the complex nonlinear control problem? This would require the bearing characteristics of magnetic suspension bearing system of the maglev intelligent supporting technology.