DEVICE FOR FORMING SIGNAL VARIATIONS IN THE ROTOR magnetic suspension rotary machine

摘要

The invention relates to mechanical engineering, namely to the magnetic suspension system (SMP) rotary machines, and can be used in compressors, expansion turbines and other installations. The objective of the proposed utility model is to create a simpler device sensorless magnetic suspension, which will simplify the design of the supports of the rotary machine and increase the immunity of the NSR. A signal generating device rotor deflection system magnetic suspension (NSR) of the rotary machine of the first embodiment contains one or two identical loop formation signal and the comparison unit, the circuit comprises a power amplifier with PWM control, the output of which is coupled with the electromagnet NSR current converter the electromagnet, with which are serially connected switching noise filter, differentiator and sample and hold unit, the other input of which is designed to supply sync consistency s with a frequency PWM switching control signal and the output of the sample-store unit is connected to the input of the comparator, whose output is the output device. A signal generating device rotor deflection system magnetic suspension (NSR) of the rotary machine of the second embodiment comprises two power amplifier with PWM control, the output of each of which is connected to a corresponding electromagnet NSR two transducers electromagnet current, each of which is incorporated into the circuit of the corresponding NSR electromagnet and the outputs of which are connected in anti-phase with the comparison unit, which are serially connected switching noise suppression filter, a differentiating unit and a sample-store Ia, the other input of which is arranged to supply clock pulses, and whose output is the output device.