文档介绍：摘要
河南科技大学本科毕业设计（论文）
IV
2
单片机类毕业论文设计
英文资料翻译
A modeling-based methodology for evaluating the performance of efficient ECSs for a particular application are challenging tasks.
. Traditional control-system design
The aim of designing an ECS is to build a computing system that is able to control the behavior of a physical system, ., a plant. Such a plant is made up of interconnected mechanical, electrical and/or chemical elements. A typical ECS consists of electronic sensors for data acquisition from the plant, a computing system for processing the control algorithm, and electronic actuators to drive the plant.
The ECS design process involves different actors and areas of expertise (control theory, signal processing, real-time SW and HW engineers). Each of these engineers is familiar with their own modeling languages, models, design tools, etc. This heterogeneity introduces cuts in the design process. Model transformations are needed between each design step; however, they are often carried out manually and, as a result, are prone to mistakes and subject to interpretation, which of course depends on the skill of the designer. The traditional form of ECS design is performed in two separated domains – the control SW domain and the HW domain – using specific design tools and their respective system models. In the first domain, control engineers define the control laws and the SW engineers write the code that executes the operations
摘要
河南科技大学本科毕业设计（论文）
IV
4
required by the control laws. A so-called control-scheduling co-design is performed. Decisions made in the real-time (RT) software design affect the control design, and vice versa. For instance, different SW scheduling policies have different impacts on the latency distributions in the control loops and, consequently, on their performance. Also, the control-loop performance directly affects (by constraining) the SW execution parameters (., sampling periods, task-execution jitter, e