SMI Compatible Simulation Scheduler Design for Reuse of Model Complying with SMP Standard

Abstract

Software reusability is one of key factors which impacts cost and schedule on a software development project. It is very crucial also in satellite simulator development since there are many commercial simulator models related to satellite and dynamics. If these models can be used in another simulator platform, great deal of confidence and cost/schedule reduction would be achieved. Simulation model portability (SMP) is maintained by European Space Agency and many models compatible with SMP/simulation model interface (SMI) are available. Korea Aerospace Research Institute (KARI) is developing hardware abstraction layer (HAL) supported satellite simulator to verify on-board software of satellite. From above reasons, KARI wants to port these SMI compatible models to the HAL supported satellite simulator. To port these SMI compatible models to the HAL supported satellite simulator, simulation scheduler is preliminary designed according to the SMI standard.

Distributed simulator design by using of SimNetwork to overcome speed limit on GenSim

“…As shown in Fig 1, it is delivered as string and for example it might be "B84FD230:IO1:3:4:9" as shown in Fig 2. It means the SimID is 0xB84FD230, SimName is "IO1", and it has several services as Rtn services (3), Isr services(4), and data interface (9). All services of Rtn and Isr is directly matched with the SMI services which is published by SMIPublishService() on SMI/SMP standard [3,6,10]. All data is directly matched with the SMI data which is published by SMIPublishData() [3,6].…”

“…All services of Rtn and Isr is directly matched with the SMI services which is published by SMIPublishService() on SMI/SMP standard [3,6,10]. All data is directly matched with the SMI data which is published by SMIPublishData() [3,6].…”

Development of Distributed Generic Simulator (GenSim) through Invention of Simulated Network (simNetwork)

“…The development of a simulation model on GenSim is based on the ESA SMI/SMP standard. Accordingly, simNetwork is implemented to comply to the ESA SMI/SMP standard is reusable at ESA SMI/SMP compatible simulation kernel such as ESA SIMSAT, EuroSim and GenSim (Koo et al 2010).…”

“…Also, to support WDB, which is the debugging utility of WindRiver Tornado, a virtual network and SMC 91C111 network simulation was performed on GenSim, as shown in Fig. 1 (Koo 2010). Finally, GenSim has real time operating system (RTOS) awareness for real-time executive for multiprocessor systems (RTEMS) and vxWorks.…”

“…2. ESA SMI/ SMP standard is the simulation modeling standard (ESA 2003, Koo et al 2010 and is adopted in ESA SIMSAT and EuroSim. GenSim also adopts the ESA SMI/SMP standard.…”