Dealing with time delay and data loss for internet-based control systems

Abstract

Introducing the Internet into control systems has brought a lot of benefits and some difficulties to control engineers as well. The major challenge of Internet-based control systems is how to deal with Internet time delay and data loss. This paper analyses Internet communication features and proposes a control structure with a variable sampling time to overcome the Internet transmission delay and failure. In order to fully take the advantage of the structure two compensation elements have been designed and implemented in the system. Our experimental results illustrate that the control structure and two compensation elements can efficiently deal with the Internet time delay and data loss.