one of the main problems in micro irrigation system is inappropriate combination and in some cases inappropriate performance of filters and sand tanks in central control systems which cause reduction in efficiency of system and increasing of operating costs. this study evaluates affect the amount of algae on the performance of disc filters sand tank in research farm deputy of soil and water and...

Control of wellbore pressure during drilling operations has always been important in the oil industry as this can prevent the possibility of well blowout. The present research employs a combination of automatic process control and statistical process control for the first time for the identification, monitoring, and control of both random and special causes in drilling operations. To this end, ...

Automated control systems play an important part in many industrial domains and the medium used for communication between devices in these systems is in transition from wired to wireless for cost reasons. Control systems have strict requirements on delay, throughput, and reliability, that vary with time during operation. Addressing these requirements requires predictable and robust protocols to...

This paper d@nes situation awareness (SA) and discusses its importance to operator-machine system safety and functioning in the context ofprocess control activities. Specifical[v, identified are relationships of human detection of critical process cues conveying the status of automated control systems and operator interpretation of the meaning and relevance of such information to the potential ...

This paper presents a new application of the Decoupling Control to automatically control large ships in harbour areas. A multi-term non-linear mathematical model is adopted to express ships’ manoeuvring motions. The method for designing the automatic control system is briefly described. Computer simulation results for a Very Large Crude Carriage (VLCC) on a simple berthing manoeuvre are given t...