工業(yè)現(xiàn)場(chǎng)控制屬于強(qiáng)實(shí)時(shí)系統(tǒng)還是弱實(shí)時(shí)系統(tǒng)？為什么

Laura哦呵呵

大家好，最近老師留了個(gè)題目（如題)，我搜了一些回答，但還是不太理解，請(qǐng)大家?guī)兔c(diǎn)撥一下。謝謝！

ITALPLANT精密輸送系統(tǒng)

A system is said to be real-time if the total correctness of an operation depends not only upon its logical correctness but also upon the time in which it is performed. Real-time systems, as well as their deadlines, are classified by the consequence of missing a deadline:

Hard – missing a deadline is a total system failure.
Firm – infrequent deadline misses are tolerable but may degrade the system's quality of service. The usefulness of a result is zero after its deadline.
Soft – the usefulness of a result degrades after its deadline, thereby degrading the system's quality of service.

魍者歸來

工業(yè)現(xiàn)場(chǎng)控制，這個(gè)范圍太大了。