A state-based modelling approach to develop component-based control software for flexible manufacturing systems

Agility index of automatic production systems: Reconfigurable logic and open source as agility enablers

“…6 This equation shows that in frequently modified and heavily utilised systems, the long-term software cost is not merely the upfront cost mentioned by Morton et al [17], typically forty percent of total system cost, but increases over time due to software maintenance and adaptation, especially if parts interoperability and interchangeability were not a design concern, thus causing prolonged software-related downtimes.…”

“…This means that always a > 0, therefore always lk ) 1 characterises agile systems. 8 According to Morton et al [17]a u 0:4, while b becomes b u 0:4 assuming that indeed exists a moment tc, which has to be further tested. equipment, narrowed its compatibility with new hardware, or perplexed its interoperability with new software.…”

“…Broadfoot observes that 'existing development methods appear to have reached a quality ceiling that incremental improvements in process and technology are unlikely to breach' [16], while Morton et al claim that 40% of the total cost building an automation is typically spent on control software and firmware [17].…”

Service-oriented software architecture for flexible manufacturing control system

“…It is well known that building software systems with components has many advantages. Yu T. Morton provides a state-based modeling approach to develop component-based control software for FMS [1]. Whereas, developing a component-based software system meet with the challenges of system evolution, maintenance, migration and compatibilities [3].…”

“…FMS is complex structure where heterogeneous elements have to be integrated by complex control architecture. In current practice, most control software implementations have been usually custom written for the given system configuration, thus the control software for flexible manufacturing system may account for up to 40% of the total cost of the system [1]. Flexible, reconfigurable, interoperable and extendible control software needs to be designed and developed to meet complex shop floor requirements.…”