  Intelligent machines (IMs), including industrial machines, unmanned aerial
vehicles (UAVs), and unmanned vehicles, etc., could perform effective
cooperation in complex environment when they form IM network. The efficient
environment sensing and communication are crucial for IM network, enabling the
real-time and stable control of IMs. With the emergence of integrated sensing
and communication (ISAC) technology, IM network is empowered with ubiquitous
sensing capabilities, which is helpful in improving the efficiency of
communication and sensing with the mutual benefit of them. However, the massive
amount of sensing information brings challenges for the processing, storage and
application of sensing information. In this article, ISAC driven digital twin
(DT) is proposed for IM network, and the architecture and enabling technologies
are revealed. ISAC driven DT structurally stores the sensing information, which
is further applied to optimize communication, networking and control schemes of
IMs, promoting the widespread applications of IMs.
