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| Improvement for designing LQ controller of order-reduced system via internal balanced realization |
| Received:February 22, 2009 Revised:August 25, 2009 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201101008 |
| KeyWord:balanced realization truncation order reduced system LQ controller improved design |
| Author | Institution |
| 李雪峰 |
合肥工业大学 土木与水利工程学院,合肥 |
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| Abstract: |
| Since the models of civil engineering structures usually possess comparatively large DOFs, controller designed directly with original structure model is high order. So the phenomenon of time delay is usually predominant when the active/semi-active control technologies are applied to suppressing the structure dynamic response. In this paper the balanced realization truncation is adopted to obtain the internal balanced model firstly, and then to design LQ controller for the reduced model. Then improve LQ controller design to improve controlling effectiveness for internal balanced order reduced system. The improving effectiveness for designing LQ controller are demonstrated by simulation for highway bridge benchmark model. |