The control and management problem for large-scale complex urban traffic network is not yet successfully addressed. There are still many difficulties in controlling such large systems, e.g. complexity, high dimension,...
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ISBN:
(纸本)9781479929153
The control and management problem for large-scale complex urban traffic network is not yet successfully addressed. There are still many difficulties in controlling such large systems, e.g. complexity, high dimension, multiple control objectives, and uncertainties. In the paper, a multi-level MPC hierarchy is proposed to address these difficulties for the control of large-scale urban traffic networks. Under the control hierarchy, a multi-level MPC algorithm is proposed, which includes three levels, the demand balance MPC, the subnetwork MPC, and the intersection controller from top to bottom. A case study is carried out to evaluate the proposed algorithm. The simulation results illustrate the effectiveness of the multi-level controller.
作者：
Shitao TuLanjuan ZhuDepartment of Automation
Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education of China 200240 China
Extraction-Transformation-Loading (ETL) plays an important role in data warehouse. Typically, performance is considered the main factor in ETL projects. Actually, faulttolerance and many other aspects influence the re...
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ISBN:
(纸本)9781467327626
Extraction-Transformation-Loading (ETL) plays an important role in data warehouse. Typically, performance is considered the main factor in ETL projects. Actually, faulttolerance and many other aspects influence the results of ETL greatly especially when the time period of projects are long and transformation rules cannot be determined from beginning, such as the situation of changing business logic. To satisfy the fault-tolerance and data validation in such kinds of situation, in this paper, we introduce a fault-tolerant algorithm which gives Redo strategy for different process interrupt scenarios. Moreover, we present a compound refresh mode consisting of full and incremental refresh to guarantee data correctness in changing business logic as well as timely data migration.
We propose an L 1/2 -based Iterative Matrix Completion algorithm for recovering the data transmitted with limited transmission window in the lossy environment to combat the high packet-loss rate. The transmission is r...
We propose an L 1/2 -based Iterative Matrix Completion algorithm for recovering the data transmitted with limited transmission window in the lossy environment to combat the high packet-loss rate. The transmission is regarded as the sampling process of Matrix Completion, hence the existing transmitting protocol or coding methods can be used to gain more samples and not mutually exclusive to the algorithm. The simulations with real world data show the effectiveness and efficiency of the scheme even the data are transmitted in the simplest way.
This paper considers the boundary control of a star-shaped open-channel network modeled by the Saint-Venant equations. We present the boundary feedback stabilization of the Saint-Venant equations by means of a Riemann...
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This paper considers the boundary control of a star-shaped open-channel network modeled by the Saint-Venant equations. We present the boundary feedback stabilization of the Saint-Venant equations by means of a Riemann invariants method. The estimation of the parameters satisfying the stability condition is deduced. The boundary feedback control is developed to guarantee that the solution of the control system decays exponentially, only by taking the water levels at the gate boundaries as the feedback.
Multi-agent systems with balanced topology have been considered intensively in the existing literature. This paper studies consensus of multi-agent systems with unbalanced topology. Two consensus protocols are propose...
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In this paper, a two-degree-of-freedom (TDOF) controller design method for multi-inputs multi-outputs (MIMO) system with multiple time delays based on inversing decoupling is proposed. Firstly, an inversing decoupling...
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In this paper, a two-degree-of-freedom (TDOF) controller design method for multi-inputs multi-outputs (MIMO) system with multiple time delays based on inversing decoupling is proposed. Firstly, an inversing decoupling method based on the factorization of the plant is developed. Secondly, the H 2 optimal controller design method is applied to the decoupled single-input/single-output (SISO) system after the system has been decoupled. Finally, a TDOF controller is designed for the decoupled closed-loop system. Compared with other developed methods, the proposed design method has two main advantages. One is that the design procedure is simple and the obtained controllers are given in analytical form. The other is that better performance can be achieved since the TDOF control structure can isolate the disturbance from the reference. Simulations are provided to illustrate the effectiveness of the proposed design approach.
In this paper, a new estimation model based on least squares support vector machine (LS-SVM) is proposed to build up the relationship between Surface electromyogram (sEMG) signal and joint angle of the lower limb. The...
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A computer vision based method was proposed to detect and track pedestrians. It worked on TLD (tracking-learning-detection) framework which was a target detection and tracking algorithm that runs the detection and tra...
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A computer vision based method was proposed to detect and track pedestrians. It worked on TLD (tracking-learning-detection) framework which was a target detection and tracking algorithm that runs the detection and tracking simultaneously and then integrated the results to update the detection and tracking modules. HOG (histograms of oriented gradients) operator and an incremental classifier based on NCC (normalized cross correlation) matching were proposed to improve the detector for the reason that TLD was prone to an error or failure when it was applied to track a pedestrian. Firstly HOG descriptor was calculated to match with the templates stored in classifier based on NCC, then the results were integrated with tracking module, and final results will be used to update the detecting module. According to the experimental results, this method has good robustness and efficiency.
This paper investigates distributed leader-following swarm of heterogeneous multi-agent systems. Comparing with the existing works on leader-following swarm of homogeneous multi-agent systems, this paper is much more ...
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This paper investigates distributed leader-following swarm of heterogeneous multi-agent systems. Comparing with the existing works on leader-following swarm of homogeneous multi-agent systems, this paper is much more approaching the practical situation because the agents have different dynamics. We show that the heterogeneous followers will gather with a certain error lever under some assumptions and conditions. The stability properties have been proven by theoretical analysis and verified via numerical simulation. The stability of the heterogeneous multi-agent systems has been achieved based on matrix theory and the Lyapunov stability theorem. Numerical simulation is given to demonstrate the effectiveness of the theoretical result.
This paper investigates distributed leader-following swarm stability of heterogeneous multi-agent systems with periodically intermittent control. We assume that the agents in the network are nonidentical and the coupl...
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ISBN:
(纸本)9789881563835
This paper investigates distributed leader-following swarm stability of heterogeneous multi-agent systems with periodically intermittent control. We assume that the agents in the network are nonidentical and the coupling matrix is balanced. Each heterogeneous follower is assumed to obtain some information from the leader and the neighbors only on a series of periodically time intervals. We show that the system will be exponentially stable. The stability properties are proved via theoretical analysis and verified via numerical simulations. The stability of the heterogeneous multi-agent systems is proved based on matrix theory and the Lyapunov stability theorem. A numerical example is shown to demonstrate the effectiveness of the theoretical result.
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