Title :
Parametric oscillation speed sensor [induction motor control]
Author :
Ejiogu, E.C. ; Kutsukake, H. ; Ono, K. ; Tanno, Y.
Author_Institution :
Fac. of Eng., Shinshu Univ., Nagano, Japan
Abstract :
If one of the R, L, or C parameter of an RLC parallel circuit is changed periodically, under certain conditions, an oscillation called parametric oscillation occurs. If one of the remaining circuit elements is made to change due to an external cause (e.g. an external electric or magnetic field), then the parametric oscillation will experience some modulation. This modulation process and the subsequent demodulation can be exploited to create several types of sensors. In this paper, the authors describe the features of a new parametric magnetic speed sensor and its application to induction motor control
Keywords :
induction motor drives; machine control; magnetic sensors; parametric oscillators; variable structure systems; velocity measurement; RLC parallel circuit; demodulation; induction motor control; modulation; parametric magnetic speed sensor; parametric oscillation speed sensor; Capacitors; Frequency; Induction motors; Magnetic sensors; Nonlinear optics; Optical feedback; RLC circuits; Robust control; Sensor phenomena and characterization; Voltage;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397908
