A method synchronizes first and second simulation systems, each operating in a free running operation thereby exchanging data to run the simulation systems. The method includes: a) providing the first simulation system (PLCSIM) being enabled to run in cycles at a linear speed determined by repeatably setting a scaling factor (s.sub.n); b) providing the second simulation system (Process Simulate) to run in cycles at different speeds; c) the second simulation system requests at the end of a cycle a virtual time stamp from the first simulation system; d) calculating on the basis of the virtual time stamp a virtual duration time At.sub.nfs and on the basis of the virtual time stamp after completion of the cycle of the second simulation system a virtual duration time At.sub.nss; and e) calculating an update sn+1 for the scaling factor according the most recent scaling factor s.sub.n multiplied by At.sub.nss/At.sub.nfs.

The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.

An information processing device includes an actuator emulator simulating a behavior of a first drive apparatus that is for driving a first control target, an actuator emulator simulating a behavior of a second drive apparatus that is for driving a second control target, a storage device for storing a PLC program including an instruction group with respect to the actuator emulator and a robot program including an instruction group with respect to the actuator emulator, a timer generating a virtual time, and a PLC emulator for repeatedly executing the instruction group included in the PLC program in each predetermined first control period in accordance with measurement using the virtual time, and a robot controller emulator for sequentially executing the instruction group included in the robot program in a predetermined execution order in accordance with the virtual time.

Integrated software systems and methods that can control the design, emulation, testing and production activities of a conveyor based system. In embodiments, the control system implements an object-oriented like environment into a PLC (Programmable Logic Controller) system and uses its software to define and control the operation of the PLC dynamically from a computer. In other embodiments, a hot backup method allows the conveyor system to continue to function on failure of one or more PLCs.

The convenience of a design of a system is improved by making it easier to verify consumed electric power when designing and constructing the system. An operation screen is displayed upon execution of on a PC for supporting the design of a control system. The configuration of a control system can be controlled in an editing region, and unit images representing an I/O unit are connected in order to a unit image representing a communication coupler. A power supply unit can be inserted into this configuration. An icon indicates a shortage of electric power to the units downstream of the unit indicated by a selected image. When a user mouses the pointer over the icon, the detailed meaning of the icon is displayed in a message. The designer is thus capable of easily verifying the position at which a power source supply unit should be added.

The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.

An information processing device includes an actuator emulator simulating a behavior of a first drive apparatus that is for driving a first control target, an actuator emulator simulating a behavior of a second drive apparatus that is for driving a second control target, a storage device for storing a PLC program including an instruction group with respect to the actuator emulator and a robot program including an instruction group with respect to the actuator emulator, a timer generating a virtual time, and a PLC emulator for repeatedly executing the instruction group included in the PLC program in each predetermined first control period in accordance with measurement using the virtual time, and a robot controller emulator for sequentially executing the instruction group included in the robot program in a predetermined execution order in accordance with the virtual time.

Integrated software systems and methods that can control the design, emulation, testing and production activities of a conveyor based system. In embodiments, the control system implements an object-oriented like environment into a PLC (Programmable Logic Controller) system and uses its software to define and control the operation of the PLC dynamically from a computer. In other embodiments, a hot backup method allows the conveyor system to continue to function on failure of one or more PLCs.