The integration of advanced digital technology and traditional industrial elements is reshaping the aviation industry system, presenting the characteristics of the new era of digital transformation, and promoting innovation in the engineering field through the integration of digital technology and industrial technology. China's aviation industry is also facing the challenges of many advanced materials and new technologies. Testing is an indispensable part of aviation product research and development. For the smooth delivery of a product, its reliability must undergo frequent and rigorous testing. With the development of technology, the precision and complexity of products are increasing day by day, and the rate of change of complex materials is getting faster and faster. The requirements for all aspects of testing are becoming more stringent and more personalized.
Recently, a software-defined open platform with modular hardware to provide flexible solutionsNational InstrumentsCo., Ltd. (National Instruments, referred to as NI) held aerospace and defense intelligence test forum in Beijing. Focus on the full life cycle test system based on the NI standardized platform.
The PXI technical specification first proposed by NI is consistent with the modular concept of synthetic instruments. After more than ten years of application, it has become the industry's most mainstream modular instrument standard. The PXI platform is not only compatible with buses and platforms such as GPIB, LAN, and VXI, which can make the previous instruments used for a long time, and the modular architecture adopted by PXI further enhances the scalability and long-term maintainability of the system.
Nowadays, virtual instruments and hybrid bus systems have become the mainstream system construction methods in defense and aviation measurement and control applications. The measurement and control system based on the NI platform is widely used in avionics testing, thin radar system testing, guidance system testing, unmanned combat systems, structural testing, engine testing, and wind tunnel experimental testing.
NI provides high-channel count and high-precision automated measurement for various types of structural tests. It can realize high-speed synchronous acquisition of thousands of channels of signals. For hydraulic, pneumatic valves, pumps, motors and other systems, the control accuracy can reach NS level. At the same time, NI's measurement and control system development software, management software, and data management software can seamlessly interface with hardware devices. NI provides the highest level of hardware reliability to ensure that the test system can meet the demanding experimental requirements under 7\/24 working conditions.
The new generation of avionics systems have higher and higher requirements for integration and integration. The IMA integrated modular avionics system has emerged. Under the premise of ensuring mature reliability, more advanced aviation buses are selected. NI provides a software-centric PXI modular test system, from basic power to various modular instruments for RF and microwave frequency testing to meet different test assurance requirements and multi-functional mixed signal test requirements.
For unmanned combat systems, NI LabVIEW software platform, NI PXI modular measurement and control platform, and NI CompactRIO embedded measurement and control platform provide a standard R&D platform for the design of complete machines and sub-systems.
Under the new trend of equipment electrification, aviation companies that are advancing with the times also have diversified requirements for test systems, such as simulation data management, equipment maintenance and fault diagnosis, versatility and ease of use, and reduction of full cycle costs. The test platform can realize the design of different electronic equipment technology systems on the same platform, and users can customize solutions according to their needs to create an open ecosystem. The advantages of test system standardization are universal and extensible test architecture, reusable and improved production efficiency, lower development costs, and lower risks.
"NI Aerospace and Defense Military Industry Division General Manager and Global Vice President Luke Schreier said, "In the aerospace field, a big concept is digital transformation. For this, our platform has great advantages. First, it can be interconnected with the cloud; second, it can be managed and diagnosed with remote devices. "
The life cycle management of aircraft manufacturing means that test equipment can be dynamically customized and maintained, quickly adapt to changing needs, and at the same time, it can efficiently standardize the configuration of distributed nodes.
Luke Schreier introduced: "Take C919 as an example. In the long-term process from design to delivery, we can manage the whole life cycle through a platform-based approach. First, we add abstract related software layers to commercial products. . When dealing with future technological innovations, or when you want to upgrade the hardware accordingly, you can use the same software, as long as you upgrade the corresponding modules, you can achieve faster and high-speed upgrades. Second, we know that for one Aircraft, whether it is C919 or other models, its global supply chain is very widely distributed. Through such abstract software and commercialized products, it can serve different regions and different applications, so that they can achieve overall rapid iteration and Quickly upgrade and expand."
Testing is an indispensable part of product development, but testing organizations often face time and cost overruns. The three requirements of test coverage, project schedule and budget are constantly pulling, and the testing organization expects to achieve a balance between these conflicting requirements. From the regional airliner to today's C919 large airliner, China's aviation industry is undergoing a technological leap, and the test strategy is also quietly changing-integrating test integration into the design verification phase of the product, allowing product design and test design to proceed simultaneously. Ajit Gokhale, senior vice president of NI global marketing, said that we are not only focusing on the test itself, but looking at the management of the test system from the upper-level design. "Specifically, our more typical overall test solution for interconnectivity is the AG600 Iron Bird test" Luke Schreier said, "We have a very complete test coverage to achieve the overall test from components to end-to-end systems, using the same The tool chain can reduce the cost and time of data interactive verification to varying degrees, and can achieve faster test efficiency improvement. Anders Tunstromer, Technical Manager of Saab Aerospace, who chose the NI HIL test system, once said: "The system is based on a standards-based open platform, which allows us to reduce the total cost of testing and the long-term hardware maintenance and total cost of ownership. This also allows us to target us Customizing the system for the needs of the company, accelerating the speed of finding and repairing embedded software, and the speed of LRU integration testing of Gripen fighters."
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