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Algorithms for U-model-based dynamic inversion (UM-dynamic inversion) for continuous time control systems (2020)
Journal Article
Li, R., Zhu, Q., Kiely, J., & Zhang, W. (2020). Algorithms for U-model-based dynamic inversion (UM-dynamic inversion) for continuous time control systems. Complexity, 2020, https://doi.org/10.1155/2020/3640210

To setup a universal proper user toolbox from previous individual research publications, this study generalises the algorithms for the U-model dynamic inversion based on the realisation of U-model from polynomial and state-space described continuous-... Read More about Algorithms for U-model-based dynamic inversion (UM-dynamic inversion) for continuous time control systems.

U-Model and U-Control methodology for nonlinear dynamic systems (2020)
Journal Article
Zhang, W., Zhu, Q., Mobayen, S., Yan, H., Qiu, J., & Narayan, P. (2021). U-Model and U-Control methodology for nonlinear dynamic systems. Complexity, 2020(Special issue: Learning and Adaptation for Optimization and Control of Complex Renewable Energy Systems), 1-13. https://doi.org/10.1155/2020/1050254

This study presents the fundamental concepts and technical details of a U-model-based control (U-control for short) system design framework, including U-model realisation from classic model sets, control system design procedures, and simulated showca... Read More about U-Model and U-Control methodology for nonlinear dynamic systems.

Improved gradient descent algorithms for time-delay rational state-space systems: Intelligent search method and momentum method (2020)
Journal Article
Chen, J., Zhu, Q., Hu, M., Guo, L., & Narayan, P. (2020). Improved gradient descent algorithms for time-delay rational state-space systems: Intelligent search method and momentum method. Nonlinear Dynamics, 101, 361-373. https://doi.org/10.1007/s11071-020-05755-8

This study proposes two improved gradient descent parameter estimation algorithms for rational state-space models with time-delay. These two algorithms, based on intelligent search method and momentum method, can simultaneously estimate the time-dela... Read More about Improved gradient descent algorithms for time-delay rational state-space systems: Intelligent search method and momentum method.