${mathsf{ENCLOSE}}$: An Enhanced Wireless Interface for Communication in Factory Automation Networks

摘要

Wireless technologies are increasingly gaining popularity for many industrial automation applications. State-of-the-art wireless technologies mainly support monitoring and open-loop control applications at the lowest level of the automation pyramid. The use of wireless technologies for closed-loop control applications is still in infancy. This paper proposes a novel wireless solution, termed as${mathsf{ENCLOSE}}$, for closed-loop control applications at the sensor/actuator level offactoryautomation. At the Physical layer,${mathsf{ENCLOSE}}$adopts IEEE 802.15.1 specifications with an enhanced data rate feature. The medium access control layer of${mathsf{ENCLOSE}}$is based on time-division multiple access and frequency-division duplexing.${mathsf{ENCLOSE}}$is based on an optimized frame structure for achieving low latency while accounting for the peculiarities of closed-loop control. Moreover,${mathsf{ENCLOSE}}$implements two different cooperative multi-user diversity techniques for achieving high reliability. Performance evaluation, based on comprehensive analytical modeling and system-level simulation studies, demonstrates that${mathsf{ENCLOSE}}$provides a practical solution, that fulfils the stringent requirements of closed-loop control applications in factory automation environments.