Hard deadlines in real-time control systems

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Scheduling with message deadlines for hard real time SDL systems

Hard real–time system design requires both, a methodology that allows to control the increasing functional complexity and additionally an a–priori proof that all timing requirements will be met even in worst case situations. This work introduces a design heuristics based on the formal " Specification and Description Language " SDL aiming on the integration of a timeliness verification into an a...

متن کامل

Deadlines in Real-Time Systems

This paper discusses the timeliness of real-time control services as seen by the control engineering and real-time scientific communities, arguing that computer-controllers must be designed to meet performance deadlines that, under special circumstances, can be missed as long as hard deadlines are still met. Hard and performance deadlines are central to the design of fault-tolerant real-time sy...

متن کامل

Guaranteeing Hard Real Time End-to-End Communications Deadlines

In a distributed hard real time system communication between tasks on different processor must occur in bounded time. The inevitable communication delay (termed the end-to-end delay) is composed from the delay in transmitting a message on the communications media, and also from the delay in delivering the data to the destination task. This paper gives schedulability analysis bounding the media ...

متن کامل

Handling Execution Overruns in Hard Real-Time Control Systems

ÐIn many real-time control applications, the task periods are typically fixed and worst-case execution times are used in schedulability analysis. With the advancement of robotics, flexible visual sensing using cameras has become a popular alternative to the use of embedded sensors. Unfortunately, the execution time of visual tracking varies greatly. In such environments, control tasks have a no...

متن کامل

Designing Hard Real-Time Systems

This paper presents a systems life cycle and a structured design method which are tailored towards the construction of real-time systems in general, and hard real-time systems in particular. The standard systems life cycle is modified to take into account the expression and satisfaction of non-functional requirements. The HOOD design method is extended to support abstractions which explicitly c...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Control Engineering Practice

سال: 1993

ISSN: 0967-0661

DOI: 10.1016/0967-0661(93)91385-a