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Reliable Control using Equivalent Transfer Function for Position Servo System
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| Author(s) |
Kaoru Ishikawa, Tsutomu Ohmae |
| Abstract |
In this paper, a reliable control method is
proposed for a position servo system using multiple loops.
The position servo system has two minor-loops which are a
speed loop and a current loop. If one minor feedback loop
fails, such as a case of the speed sensor break down, the
position servo system becomes unstable. To cope with this
problem, the proposed method uses an equivalent transfer
function (ETF) as an active redundancy compensation after
the loop failure. The ETF is designed so that it does not
change the transfer function of the whole system before and
after the loop failure. Therefore, the stability of the position
control system using this proposed method is guaranteed
even if the speed feedback loop fails or the current feedback
loop fails. The effectiveness of this proposed method is
confirmed by the experimental results. |
| Download |
| Filename: | T5-302.pdf |
| Filesize: | 377.7 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-13 by System |
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