Utilization Control and Optimization of Real-Time Embedded Systems

Li, Xue; Chen, Xi; Kong, Fanxin

doi:10.1561/1000000042

Cited by 4 publications

(3 citation statements)

References 81 publications

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“…In many embedded systems in the context of cyber-physical systems, the applications are control applications, where the software implementation of the controllers controls physical plants [28]. The design of controllers for these applications from a control-theoretical perspective are well established.…”

Section: Processormentioning

confidence: 99%

Control/Architecture Codesign for Cyber-Physical Systems

Chang

Zhang²,

Roy³

et al. 2017

Handbook of Hardware/Software Codesign

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Control/architecture codesign has recently emerged as one popular research focus in the context of cyber-physical systems. Many of the cyber-physical systems pertaining to industrial applications are embedded control systems. With the increasing size and complexity of such systems, the resource awareness in the system design is becoming an important issue. Control/architecture codesign methods integrate the design of controllers and the design of embedded platforms to exploit the characteristics on both sides. This reduces the design conservativeness of the separate design paradigm while guaranteeing the correctness of the system and thus helps to achieve more efficient design. In this chapter of the handbook, we provide an overview on the control/architecture codesign in terms of resource awareness and show three illustrative examples of state-of-the-art approaches, targeting respectively at communication-aware, memory-aware, and computation-aware design.

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Section: Processormentioning

confidence: 99%

Control/Architecture Codesign for Cyber-Physical Systems

Chang

Zhang²,

Roy³

et al. 2017

Handbook of Hardware/Software Codesign

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“…• A real-time constraint is soft, if meeting this constraint is desirable, but missing this constraint does not seriously damage the system behavior [2].…”

Section: Introductionmentioning

confidence: 99%

Research on Real-Time Embedded Software Scheduling Model Based on EDF

et al. 2020

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Schedulability analysis is a very important part in real-time system research. Because the scenarios faced by real-time systems are very complicated, the functional characteristics must be combined with the predictability of response time. It is necessary to ensure the correctness of the calculation results and meet the real-time requirements. To solve this problem, we propose the IEDF (Improved Earliest Deadline First) algorithm, which is combined with the queuing theory model. The IEDF algorithm is based on the EDF (Earliest Deadline First) algorithm, which is more suitable for the scheduling of real-time embedded system. Scheduling of non-periodic tasks that arrive randomly. There are two types of tasks in the task set, tasks with a high static priority are executed first. In the ready queue of the same priority task, the deadline and execution time are considered. The comparison of simulation experiments shows that: the sum of waiting time in the execution of IEDF with enough deadline is much less than that of ordinary queuing algorithm; the number of errors in the execution of IEDF algorithm with deadline is much less than that of ordinary queuing algorithm. These results demonstrate the feasibility of the IEDF algorithm.INDEX TERMS Deadline, real-time scheduling, EDF (earliest deadline first) algorithm.

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“…Many control applications are safety-critical and even when not, a malfunction could lead to significant costs in terms of damaged equipment, loss of production or degraded customer satisfaction [1]. Therefore, it is important to ensure that the control performance satisfies certain requirements.…”

Section: Introductionmentioning

confidence: 99%

Effectively utilizing elastic resources in networked control systems

Balszun¹,

Roy²,

Zhang³

et al. 2017

2017 IEEE 23rd International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA)

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Abstract-The rapid growth in the size and complexity of modern Cyber-Physical Systems (CPS) imposes increasing demand for the embedded resources, especially the communication resources. As a result, resource-efficient CPS design has become an important issue. Towards the design of networked embedded control systems, a major branch of CPS, reliable and deterministic communication is able to achieve satisfactory control performance. However, the amount of this type of resource that can be provided by the embedded platform is often limited. On the other hand, it is difficult to guarantee the control performance with non-deterministic communication resources, due to their unpredictable behavior. In this paper, we propose a novel control scheme to efficiently utilize elastic communication resources. In general, the non-deterministic communication resources are flexibly deployed on top of the deterministic communication resources to achieve stability and good control performance. In the rare worst-case, when non-deterministic communication is completely unavailable, the deterministic communication resources are used to guarantee stability and the control performance satisfying the design requirement. The experimental results show that the performance of the control application is ensured to satisfy the design requirement in the worst case and that better control performance is achieved when non-deterministic resources are available.

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Utilization Control and Optimization of Real-Time Embedded Systems

Cited by 4 publications

References 81 publications

Control/Architecture Codesign for Cyber-Physical Systems

Control/Architecture Codesign for Cyber-Physical Systems

Research on Real-Time Embedded Software Scheduling Model Based on EDF

Effectively utilizing elastic resources in networked control systems

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