Title :
Design of Real Time Control Software Based On QNX
Author :
Yaguang, Kong ; Wenhai, Wang
Author_Institution :
Sch. of Autom., Hangzhou Dianzi Univ.
Abstract :
System architecture of one real time control software is given in this article, and the design method is introduced for each module. The real time control software support the redundant of system network, control network and control station, enhance the robustness of system greatly; select QNX as real time operation system, support control algorithm editor based on IEC61131-3, and tasks with different period or stimulate by event all supported in this software; receive operate instruction and unload real time value through Ethernet by socket; in the handle program of interrupt from CAN, acquisition of real time data from 32 IO board can be finished in 320 ms. This real time control software has been used in one DCS system, and has strong robustness and high real time ability
Keywords :
control system CAD; data acquisition; digital control; robust control; software architecture; CAN; Ethernet; IEC61131-3; QNX; control network; control station; data acquisition; real time control software design; support control algorithm editor; system architecture; system robustness; Automatic control; Communication system control; Computer architecture; Control systems; Databases; Delay; Industrial control; Job shop scheduling; Message passing; Real time systems; Control Software; Message Passing; Multitask Schedule; QNX; Real Time Database;
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
Print_ISBN :
1-4244-0390-1
DOI :
10.1109/IECON.2006.347489
