Robust system control method with short execution time

A technology of execution time and control system, applied in the direction of program control, adaptive control, program control design, etc., can solve the problem of not allowing the optimal use of CPU resources, and achieve the effect of saving computing power and maintaining system stability

Inactive Publication Date: 2018-07-03
AIRBUS OPERATIONS (SAS)
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the WCET approach does not allow optimal use of CPU resources since most of the time tasks are well able to output results before the WCET deadline

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Robust system control method with short execution time
  • Robust system control method with short execution time
  • Robust system control method with short execution time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The inventors have found that at present, automatic control system theory has reached a level of confidence in the robustness analysis that allows for the tolerance of missed deadlines. The inventors have also found that the prevalent WCET approach is overly cautious in most applications, especially safety-critical applications. In the following, a method of controlling an automated system having a time slot smaller than WCET allocated to control task execution and tolerant of missed time limits will be described. It also shows the stability and security of the system that can be guaranteed.

[0059] As follows, for n-dimensional state vector X and non-negative delay h, X t Denotes such that for all θ ∈ [-h, 0] there is X t (θ) = function of X(t-θ). The function X t The set of is denoted as K h . Set R + , R nxn and S n Represent positive scalar set, nxn matrix set and R respectively nxn The set of symmetric matrices. The superscript 'T' means matrix transpos...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A robust system control method with short execution time limit. A method of controlling a system is provided, comprising the steps of: initiating a task, the task being associated with a worst case execution time; and monitoring the end of the task after a time slot allocated to execution of the task; wherein the time slot Shorter than the worst case execution time stated.

Description

technical field [0001] This invention relates to the control of critical automated systems. The invention applies to robust autonomous systems, such as avionics systems, where stability is a critical issue. Background technique [0002] Safety-critical products, such as avionics, are often developed according to strict safety specifications. These safety specifications include the determination and prediction of the timing behavior of the system. Typically, the overall development approach is based on the separation of control design and implementation concerns. [0003] During control design, important issues are maintaining a constant sampling rate with equidistant samples and no jitter, and with negligible, or fixed, known delay. Also, according to real-time scheduling theory, it focuses primarily on dimensioning resources to meet time constraints (or equivalently, on scheduling analysis for a given resource). [0004] Typically, during runtime, each resource of the s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04G01D1/10
CPCG05B19/0426G06F9/4887G06F11/008G06F9/50
Inventor P·安德里亚尼艾纳A·塞雷D·西蒙
Owner AIRBUS OPERATIONS (SAS)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap