Fault-tolerant control method for position sensor of switched reluctance motor
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Aug 20, 2015
filing date -
Dec 8, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fault-tolerant control method for a position sensor of a switched reluctance motor, if the position sensor of the switched reluctance motor runs without a fault, detecting, in real time, four equal-interval or equal-angle continuous edge pulses of an output signal of the position sensor, the fourth edge pulse being the current edge pulse, and detecting time intervals (T1, T2, T3) between each two adjacent edge pulses sequentially, thereby calculating a time interval (T4) between the current edge pulse and a next edge pulse following the current edge pulse. If the position sensor of the switched reluctance motor fails, and the next edge pulse following the current edge pulse is lost, reconstructing the next edge pulse after the interval time (T4) of the current edge pulse of the output signal of the position sensor. The method can be used, when one or more position sensors of a rotatory and linear switched reluctance motor having various phases and various topology structures fail, to reconstruct an edge pulse after lost.
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International Classification(s)
- 2015 Application Filing Year
- H02P Class
- 1367 Applications Filed
- 1133 Patents Issued To-Date
- 82.89 % Issued To-Date
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- H02P Class
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