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Utilization Control and Optimization of Real-Time Embedded Systems false
By:Xue Liu,X. I. Chen,Fanxin Kong
Published on 2015-09-23 by

Real-time embedded systems have been widely deployed in mission-critical applications, such as avionics mission computing, highway traffic control, remote patient monitoring, wireless communications, navigation, etc. These applications always require their real-time and embedded components to work in open and unpredictable environments, where workload is volatile and unknown. In order to guarantee the temporal correctness and avoid severe underutilization or overload, it is of vital significance to measure, control, and optimize the processor utilization adaptively. A key challenge in this mission is to meet real-time requirements even when the workload cannot be accurately characterized a priori. Traditional approaches of worst-case analysis may cause underutilization of resources, while Model Predictive Control (MPC) based approaches may suffer severe performance deterioration when large estimation errors exist. To address this challenging problem and provide better system performance, we have developed several important online adaptive optimal control approaches based on advanced control techniques. Our approaches adopt Recursive Least Square (RLS) based model identification and Linear Quadratic (LQ) optimal controllers to guarantee that the systems are neither overloaded, nor underloaded. These proposed approaches, as well as the associated tools, can quickly adapt to volatile workload changes to provide stable system performance. To minimize the impact of modeling errors, we adopt the Adaptive Critic Design (ACD) technique and develop an improved solution that requires little information of the system model. To deal with the discrete task rates, we further propose to utilize the frequency scaling technique to assist the utilization control and optimization.

This Book was ranked at 29 by Google Books for keyword Embedded Systems.

Book ID of Utilization Control and Optimization of Real-Time Embedded Systems's Books is fpQ5jgEACAAJ, Book which was written byXue Liu,X. I. Chen,Fanxin Konghave ETAG "rLfLnjRzGOI"

Book which was published by since 2015-09-23 have ISBNs, ISBN 13 Code is 9781680830620 and ISBN 10 Code is 1680830627

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