Industrial Control Software Component-based Design And Research

Software reusability and maintainability have become increasingly important with its growing complexity and scope. Due to its high reusability and maintainability, component-based software (CBS) has been the focus of software development in recent years.This thesis in the first place gives an introduction of the core theory of component technology, followed by the current standard of component, including MS COM, OMG CORBA and Sun J2EE expounded in detail, and the mechanism and realization of MS COM stressed.In order to promote the efficiency and quality of industry control software development and meet its speciality, this thesis aims to provide a software framework which constructs a control software utilizing the new born component technology.Based on the research of NT system, this thesis has made the following findings to meet the real-time requirements of industry control field. 1. Realizing a component which can achieve software-real-time control. 2. Realizing a I/O driver making use of WINNT driver development. 3. Packaging the I/O driver into a COM object. Moreover, the principles of real-time component design are further discussed in the following part of the thesis.