Title:
昇降機の駆動装置における回転子の時定数適合方法
Document Type and Number:
Japanese Patent JP3606899
Kind Code:
B2
Abstract:
Torque current reference ITref and reference acceleration aref are sampled in a vector controlled induction motor drive for developing a quality criterion by which an estimated rotor time constant tau 2 may be adapted to the actual rotor time constant tau 2. More specifically, the torque current reference ITref and reference acceleration aref are sampled and then a slope of ITref versus aref is plotted against the offset of that line, which offset is proportional to the lead torque TLOAD. The no-load slope is then determined from this plot and subtracted from an ideal no-load slope and the difference passed through a proportional-integral circuit for providing an estimated rotor time constant tau 2 which is adapted to the actual rotor time constant tau 2.
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| JPS534839 | POWER SOURCE DEVICE |
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Inventors:
Michael Man
Karl-Heinz Grae
Karl-Heinz Grae
Application Number:
JP6367294A
Publication Date:
January 05, 2005
Filing Date:
March 31, 1994
Export Citation:
Assignee:
OTIS ELEVATOR COMPANY
International Classes:
B66B1/30; B66B1/28; B66B1/34; H02P21/00; H02P21/14; H02P27/04; H02P29/00; (IPC1-7): B66B1/30; B66B1/34; H02P5/00; H02P21/00
Domestic Patent References:
| JP60183953A | ||||
| JP60036716B2 | ||||
| JP4004837B2 | ||||
| JP1047381B2 |
Attorney, Agent or Firm:
Tsuyoshi Hashimoto