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Changzhu Zhang
Tongji University
12Publications
3H-index
30Citations
Publications 12
Newest
Published on Jan 1, 2018in IEEE Transactions on Fuzzy Systems8.76
Changzhu Zhang3
Estimated H-index: 3
,
Hak-Keung Lam43
Estimated H-index: 43
+ 2 AuthorsQijun Chen7
Estimated H-index: 7
This paper examines the problem of membership-function-dependent controller design for a class of discrete-time T-S fuzzy systems. Based on the partition method of premise variable space, the original T-S fuzzy model is equivalently converted into a piecewise-fuzzy system. Then, by employing some staircase functions, the continuous membership functions are approximated by a series of discrete values via which the information of membership functions is brought into the stability analysis to reduc...
Published on Jul 1, 2019in Neurocomputing4.07
Meng Han (Yanshan University), Hak-Keung Lam43
Estimated H-index: 43
('KCL': King's College London)
+ 2 AuthorsChangzhu Zhang (Tongji University)
Abstract This paper presents a methodology to investigate the observer-based control for positive nonlinear systems with unknown time delay through analyzing the stability and positivity of positive polynomial fuzzy-model-based (PPFMB) observer-control systems with unknown time delay and unmeasurable premise variables. In order to widen the application of research results and relax the research results, the polynomial fuzzy observer-controller employs a membership function depending on estimated...
Published on May 1, 2019in Information Sciences5.52
Weilin Yang5
Estimated H-index: 5
(Jiangnan University),
Dezhi Xu6
Estimated H-index: 6
(Jiangnan University)
+ 1 AuthorsWenxu Yan1
Estimated H-index: 1
(Jiangnan University)
Abstract Robust model predictive control (RMPC) has gained much attention in the past two decades. For classic finite-horizon RMPC, a terminal constraint set together with a terminal cost function are usually employed for the purpose of closed-loop stability. However, computational burden and feasibility region may need to be carefully addressed when the prediction horizon length becomes large, especially for the cases with additive disturbances. In this paper, a novel RMPC approach with pseudo ...
Published on Feb 1, 2019in IEEE Transactions on Fuzzy Systems8.76
Changzhu Zhang3
Estimated H-index: 3
(Tongji University),
Jinfei Hu2
Estimated H-index: 2
(ZJOU: Zhejiang Ocean University)
+ 3 AuthorsQijun Chen7
Estimated H-index: 7
(Tongji University)
In this paper, the problem of steering control is investigated for vehicle path tracking in the presence of parametric uncertainties and nonlinearities. In practice, the vehicle mass varies due to the number of passengers or amount of payload, while the vehicle velocity also changes during normal cruising, which significantly influences vehicle dynamics. Moreover, the vehicle dynamics are strongly nonlinear caused by the tire/road forces under different road surface conditions. With fuzzy modeli...
Published on Jan 25, 2019in International Journal of Systems Science2.47
Changzhu Zhang3
Estimated H-index: 3
(Tongji University),
Mengjiao Shen (Tongji University)+ 2 AuthorsJinfei Hu (ZJOU: Zhejiang Ocean University)
ABSTRACTIn this paper, the problem of event-triggered H∞ piecewise controller design is concerned for discrete-time networked nonlinear systems represented by T–S fuzzy models. Based on the event triggering communication strategy, only the state information of the plant that violates a predefined triggering condition is transmitted in the shared communication channels. Considering that the premise variables of the plant in the form of T–S fuzzy representation are not synchronously available at t...
Published on Jul 1, 2018
Guangyong An (Tongji University), Changzhu Zhang3
Estimated H-index: 3
(Tongji University),
Hong Sun1
Estimated H-index: 1
(Tongji University)
Considering the variations of vehicle mass and velocity, a Takagi-Sugeno fuzzy model is proposed to describe the lateral vehicle dynamics. Under Lyapunov stability framework, sufficient conditions in terms of linear matrix inequalities have been derived for the stability of the path tracking system and the existence of admissible state feedback controllers, is also given for the closed-loop system to be asymptotically stable with a prescribed \mathcal{H}_{\infty}disturbance attenuation level....
Published on Mar 1, 2018in Journal of Bionic Engineering2.46
Chengju Liu5
Estimated H-index: 5
(Tongji University),
Li Xia1
Estimated H-index: 1
(Tongji University)
+ 1 AuthorsQijun Chen8
Estimated H-index: 8
(Tongji University)
This work concerns biped adaptive walking control on slope terrains with online trajectory generation. In terms of the lack of satisfactory performances of the traditional simplified single-layered Central Pattern Generator (CPG) model in engineering applications where robots face unknown environments and access feedback, this paper presents a Multi-Layered CPG (ML-CPG) model based on a half-center CPG model. The proposed ML-CPG model is used as the underlying low-level controller for a quadrupe...
Published on Nov 1, 2017
Hong Sun1
Estimated H-index: 1
(Tongji University),
Changzhu Zhang3
Estimated H-index: 3
(Tongji University)
+ 2 AuthorsChengju Liu (Tongji University)
In this paper, the problem of H ∞ dynamic output feedback control with feedforward is presented for path tracking in autonomous vehicle. To achieve the desired performance during high-speed driving, both the kinematic and dynamic models of the vehicle are considered. Within the fuzzy-model-based framework, an approach to the fuzzy dynamic output feedback controller design is proposed. The desired yaw rate of the vehicle is regarded as the external disturbance of the vehicle lateral dynamics, whi...
Changzhu Zhang3
Estimated H-index: 3
(Tongji University),
Jinfei Hu2
Estimated H-index: 2
(ZJOU: Zhejiang Ocean University)
+ 1 AuthorsQijun Chen8
Estimated H-index: 8
(Tongji University)
Due to the unavailability of full state variables in many control systems, this paper is concerned with the design of reliable observer-based output feedback controller for a class of network-based Takagi-Sugeno fuzzy systems with actuator failures. In order to better allocate network resources under the case that the sensor nodes are physically distributed, the decentralized event triggering communication scheme is adopted such that each sensor node is capable to determine the transmission of i...
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