Safety and optimality are crucial requirements in every industrial process. Modern day chemical plants, in particular, require comprehensive fault diagnosis procedures to function smoothly. The success of any fault diagnosis technique depends critically on the sensors measuring the important process variables. With thousands of possible measurements in a typical plant, the selection of variable...

For brushless motor drives, current control is often used to improve performance and reliability. This tutorial paper analyzes and compares various different schemes of electronic commutation and current control. Starting from a simple 6-step drive without current control, discussion will include bus current control, sinusoidal commutation, phase current control, and synchronous regulator. Rela...

A sensor network is a wireless ad hoc network of resourceconstrained sensor nodes. In this article, we address the problem of communication-efficient implementation of the SQL “join” operator in sensor networks. We design an optimal join-implementation algorithm that provably incurs minimum communication cost under certain reasonable assumptions. In addition, we design a much faster suboptimal ...

Using social networks to support knowledge management and collaboration in an organisation is an interesting approach. In our work of systems design we focus on awareness systems using mobile technologies, sensors and notification systems. Being aware of others’ activities and availability also make people more aware of the social networks in the organisation. My contribution to this workshop i...