MAGNETIC LEVITATION SYSTEM AND THE DISTINGUISH THE TROUBLE WHETHER OR NOT FLOTATION CONTROL METHOD IN WHICH THE CURRENT AMPLITUDE FLOWING IN ELECTROMAGNET IS DETECTED

摘要

PURPOSE: The magnetic levitation system and flotation control method prevent to include the levitation controller applying the in advance calculated control gain and sink the trouble occurrence time instance air gap.;CONSTITUTION: A pair of electromagnets is included of the first electromagnet and the second electromagnet. The control gain value is computed when both the flotation controller(50) is the first electromagnet and second electromagnet normality. Current sensors(20a, 20b) are connected between IGBT(Insulated Gate Bipolar Transistor)(70, 75) and electromagnet.;COPYRIGHT KIPO 2011