Title :
Exact model identification for magnetic suspension system via magnetic field measurement
Author :
Lin, C.E. ; Jou, H.L. ; Sheu, Y.R., Sr.
Author_Institution :
Inst. of Aeronaut. & Astronaut., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In magnetic suspension analysis, a simplified model of the current-to-distance relationship is not sufficient to design an optimal controller. Due to the nonlinearity of the magnetic field, an accurate model is difficult to obtain. The authors present an improved model identification method for a magnetic suspension system so as to establish reliable and exact parameters to describe the dynamic motion characteristic. The parameter for each test sample can be calculated under the specified operating conditions after some magnetic field measurements. The results lead to an optimal controller design for magnetic suspension systems
Keywords :
control system synthesis; identification; magnetic field measurement; magnetic fluids; optimal control; current-to-distance relationship; dynamic motion characteristic; force model; magnetic field measurement; magnetic suspension; model identification; nonlinearity; optimal controller; Coils; Iron; Magnetic analysis; Magnetic circuits; Magnetic field measurement; Magnetic flux; Magnetic flux density; Magnetic forces; Magnetic levitation; Magnetic materials;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1992. IMTC '92., 9th IEEE
Conference_Location :
Metropolitan, NY
Print_ISBN :
0-7803-0640-6
DOI :
10.1109/IMTC.1992.245135
