Abstract
In practical applications of dynamic DNA nanotechnology, a biomolecular controller is required for maintaining the operation of the molecular actuator at a desired condition based on the information from molecular sensors. By making use of the DNA strand displacement mechanism as a “programming language” in the controller design, a biomolecular PI controller has been proposed. However, this PI control system has been verified only at the simulation level, and a theoretical regulation analysis is still required. Accordingly, in this study, we perform a rigorous regulation analysis of the biomolecular PI control system. Specifically, we theoretically prove that the output signal approaches the target level at a quasi-steady state. To this end, we apply the concept of finite-time regulation property to the biomolecular PI control system.
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This work was supported by JSPS KAKENHI (No. 17K06500).
Peng RONG received his M.Sc. degree from Kyushu Institute of Technology, Japan, in 2020.
Takashi NAKAKUKI received his B.E. and M.Sc. degrees from Sophia University, Japan, in 1997 and 1999, respectively. From April 1999 to March 2003, he worked at Sony Corporation. He obtained his Ph.D. degree in Mechanical Engineering from Sophia University, Tokyo, Japan, in 2006. He was subsequently employed at RIKEN from April 2006 to March 2009, and at the Department of Mechanical Systems Engineering, Kogakuin University, from April 2009 to March 2013. In April 2013, he joined Kyushu Institute of Technology, where he is currently a Professor in the Department of Intelligent and Control Systems. His research interests are biomolecular systems, complex systems, multi-agent system, nonlinear systems, linear systems, and robust control.
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Rong, P., Nakakuki, T. Analysis of finite-time regulation property of biomolecular PI controller. Control Theory Technol. 18, 135–142 (2020). https://doi.org/10.1007/s11768-020-0017-2
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DOI: https://doi.org/10.1007/s11768-020-0017-2