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Han Zhao
Hefei University of Technology
58Publications
4H-index
88Citations
Publications 58
Newest
Published on Jan 1, 2018in IEEE Transactions on Fuzzy Systems 8.76
Hao Sun4
Estimated H-index: 4
,
Rongrong Yu1
Estimated H-index: 1
(Hefei University of Technology)
+ 1 AuthorsHan Zhao4
Estimated H-index: 4
The optimal design problem of adaptive robust control for fuzzy mechanical systems with uncertainty is investigated in this paper. The uncertainty that may be nonlinear and (possibly fast) time-varying is assumed to be bounded, and the knowledge of the bound only lies within a prescribed fuzzy set. Based on the Udwadia and Kalaba's approach, an adaptive robust controller, which is deterministic and is not the usual if-then rules-based is proposed to render the system to follow a class of prespec...
Published on Jan 1, 2018in IEEE Transactions on Fuzzy Systems 8.76
Xiaomin Zhao1
Estimated H-index: 1
(Hefei University of Technology),
Xiaomin Zhao + 1 AuthorsHan Zhao4
Estimated H-index: 4
We consider an artificial swarm mechanical system consisting of multiple agents. The agents are composed of mechanical components. The ideal kinematic performance includes mutual attractions and repulsions. This kinematic performance is embedded into the dynamics by being treated as a constraint. The Udwadia–Kalaba theory is then used to generate the required servo constraint force to assure the constraint is met for the nominal system. The system also includes uncertainty. The uncertainty in th...
Published on Apr 8, 2019
Yiran Zhang1
Estimated H-index: 1
(Hefei University of Technology),
Han Zhao4
Estimated H-index: 4
(Hefei University of Technology)
+ 2 AuthorsLizhen Geng (Chery)
This study provides an optimization methodology in powertrain configurations and energy management strategy for a multi-mode plug-in hybrid electric vehicle. The challenge in this study is that the...
Published on Mar 1, 2019in Nonlinear Dynamics 4.60
Rongrong Yu (SDUST: Shandong University of Science and Technology), Ye-Hwa Chen5
Estimated H-index: 5
(Georgia Institute of Technology)
+ 1 AuthorsHao Sun4
Estimated H-index: 4
We propose to design control for uncertain underactuated mechanical systems. The underactuated mechanical system is to follow prescribed holonomic or nonholonomic constraints. The uncertainty in the system does not in general fall within the range space of the input matrix, which is a major obstacle for control design. To resolve this difficulty, we decompose the uncertainty into matched uncertainty and mismatched uncertainty in a unique manner using the geometric structural characteristics of t...
Xiaolong Chen (Hefei University of Technology), Han Zhao4
Estimated H-index: 4
(Hefei University of Technology)
+ 2 AuthorsKang Huang5
Estimated H-index: 5
(Hefei University of Technology)
Abstract Underactuated mobile robot (UMR) is a typical nonlinear underactuated system with nonholonomic and holonomic constraints. Based on the model of UMR, we propose a novel adaptive robust control to control the UMR and compensate the uncertainties from the view of constraint-following. The uncertainties, which are (possibly fast) time-varying and bounded, include modeling error, initial condition deviation, friction force and other external disturbances. However, the bounds are unknown. To ...
Published on Mar 1, 2019in IEEE/CAA Journal of Automatica Sinica
Xiaolong Chen (Hefei University of Technology), Han Zhao4
Estimated H-index: 4
(Hefei University of Technology)
+ 1 AuthorsHao Sun4
Estimated H-index: 4
(Hefei University of Technology)
This paper focuses on the problem of the adaptive robust control of a lower limbs rehabilitation robot ( LLRR ) that is a nonlinear system running under passive training mode. In reality, uncertainties including modeling error, initial condition deviation, friction force and other unknown external disturbances always exist in a LLRR system. So, it is necessary to consider the uncertainties in the unilateral man-machine dynamical model of the LLRR we described. In the dynamical model,...
Published on Feb 1, 2019in Mechanical Systems and Signal Processing 5.00
Rongrong Yu1
Estimated H-index: 1
(Hefei University of Technology),
Ye-Hwa Chen5
Estimated H-index: 5
(Georgia Institute of Technology)
+ 2 AuthorsShengchao Zhen4
Estimated H-index: 4
(Hefei University of Technology)
Abstract The control problem for an uncertain mechanical system is addressed. The mechanical system under consideration, which is to follow a class of prescribed constraints, contains (possibly fast) time-varying uncertainty. The uncertainty is bounded, but the bound is not necessarily known. A new class of robust control schemes is proposed, which is based on on-line adaptation of a design parameter. Two categories of adaptation laws, both are based on self-adjusting leakage, are proposed. The ...
Published on Nov 1, 2018in Advances in Mechanical Engineering
Yinfei Zhu (Hefei University of Technology), Han Zhao4
Estimated H-index: 4
(Hefei University of Technology)
+ 2 AuthorsYinghui Dong (Hefei University of Technology)
Published on Oct 1, 2018in Journal of Vibration and Control 2.87
Hao Sun1
Estimated H-index: 1
(Hefei University of Technology),
Ye-Hwa Chen5
Estimated H-index: 5
(Georgia Institute of Technology)
+ 1 AuthorsShengchao Zhen4
Estimated H-index: 4
(Hefei University of Technology)
In this paper, we investigate the dynamical model of an active roll control system (ARCS) which can impose an anti-roll moment quickly by active actuators to prevent a vehicle rolling when the vehicle generates the roll tendency and effectively enhances the vehicle dynamic performance without sacrificing ride comfort. In the dynamic model of the ARCS, we consider the sprung mass of the vehicle which is (possibly) time-varying and the initial conditions are the uncertain parameters which are desc...
Published on Sep 1, 2018in Asian Journal of Control 2.00
Xiaomin Zhao1
Estimated H-index: 1
(Hefei University of Technology),
Y. H. Chen7
Estimated H-index: 7
(Georgia Institute of Technology)
+ 1 AuthorsFangfang Dong1
Estimated H-index: 1
(Hefei University of Technology)
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