Nonlinear Programming (NLP) is for optimization of nonlinear cost functions. In applications of NLP for real-time optimization, however, the estimation of the gradient of the cost function remains as a challenge. On the other hand, the Extremum-Seeking Control (ESC) optimizes the cost function in real-time, but it involves a complicated design of filters in multi-dimensional cases. In this paper, a new method that optimizes an arbitrary multi-variable cost function in real-time is proposed. In the proposed method, the variables are updated as in NLP while the gradient of the cost function is continuously estimated by the amplitude modulation as in ESC. The proposed method does not require design of any complicated filters. The performance is verified by simulations on time-varying and noisy cost functions as well as automatic controller tuning applications.
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ASME 2008 Dynamic Systems and Control Conference
October 20–22, 2008
Ann Arbor, Michigan, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-4335-2
PROCEEDINGS PAPER
Real-Time Nonlinear Programming by Amplitude Modulation Available to Purchase
Kyoungchul Kong,
Kyoungchul Kong
University of California at Berkeley, Berkeley, CA
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Kiyonori Inaba,
Kiyonori Inaba
University of California at Berkeley, Berkeley, CA
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Masayoshi Tomizuka
Masayoshi Tomizuka
University of California at Berkeley, Berkeley, CA
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Kyoungchul Kong
University of California at Berkeley, Berkeley, CA
Kiyonori Inaba
University of California at Berkeley, Berkeley, CA
Masayoshi Tomizuka
University of California at Berkeley, Berkeley, CA
Paper No:
DSCC2008-2160, pp. 417-424; 8 pages
Published Online:
June 29, 2009
Citation
Kong, K, Inaba, K, & Tomizuka, M. "Real-Time Nonlinear Programming by Amplitude Modulation." Proceedings of the ASME 2008 Dynamic Systems and Control Conference. ASME 2008 Dynamic Systems and Control Conference, Parts A and B. Ann Arbor, Michigan, USA. October 20–22, 2008. pp. 417-424. ASME. https://doi.org/10.1115/DSCC2008-2160
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