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Hardware in-the-loop simulation test has the advantage of live test, digital simulation test, which can build the lifelike test environment. This kind of test can carry through repeated test of multi-sample. The key technique of the hardware in-the-loop simulation test is real-time algorithmic and communication technology. In this paper, based on reflective memory network, the design for hardware...
On the hardware platform of Distributed Real-Time Simulation, a communication module based on reflective memory network was realized in FPGA. The module, as an infrastructure, could be integrated with others seamlessly. Information stream inside the module was analyzed. Following the "Store and Forward with FIFO" rules, hardware circuits were well designed, including Host Logic, Memory Logic,...
On the hardware platform of Distributed Real-Time Simulation, a communication module based on reflective memory network was realized in FPGA. As an infrastructure module, it could be integrated with other modules seamlessly. Under the speed-first rules, DMA engine in PCI Master mode was designed, and 64bits/32bits bus compatibility was realized. In order to solve the competition problems during network...
To satisfy the requirement of AUV simulation research, a hardware-in-the-loop simulation system for SINS/GPS integrated navigation of AUV which consists of ADI/RTS simulation station, IMU, GPS navigation simulator, GPS receiver and water pressure simulator was put forward. This system can realize the real-time communication by using reflective memory network. The conclusion shows that the hardware-in-the-loop...
In the current distributed simulation system, the real-time network transmission has been increasingly demanded. However, the traditional physical shared storage and LAN technology both have some limitations. This paper describes the reflective memory network technology and compares it with the traditional network transmission technology. In the High Level Architecture (HLA) applications, Most of...
Originating in 1980s, distributed simulation has turned out to be a powerful tool in scientific research, military simulation and training, complex product design and more other fields. However, new problems like limited computational capacity and heavy communication overhead exist as simulation modeling and computation develop. This paper concentrates on these problems, reviews related work, and...
In this paper, the working principle of reflective memory network is introduced, reflective memory network is designed and realized, and real-time, delay determinacy and reliability of reflective memory network are tested under QNX real-time operating system. The performance tests indicate that the reflective memory network meets the demands of the real-time and dependability and improves the stability...
To meet real-time and reliability of network-based virtual numerical control system, this article proposes a supporting platform of virtual numerical control system based on RTX and reflective memory network. In this architecture, low real-time tasks ran on Windows while high real-time tasks ran on RTX; control and status information network of virtual CNC based on RT-TCPIP was designed. Network level...
Simulation supporting environment is the important part of simulation system. Different level requests variously to real-time behavior in the complex real-time simulation system. Under the Environment of RTX and Windows-NT, Performance index of Ethernet and reflective memory network including data transmission delay and delay jitter was measured. The comparison of performance index between the environment...
This paper proposes an advanced substation communication system based on reflective memory (RM) network in order to implement real time data exchange for the integrated protection. In the system, a central control unit (CCU) and merging unit (MU) with the dual redundant star topologies are the controllable nodes in the network. The field programmable gate array (FPGA) chips are employed in the MU...
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