Real-time mixing test control and test system and method based on Linux-RT system and application

The real-time hybrid test control system based on Linux-RT system solves the problems of insufficient real-time performance, poor scalability and difficulty in multi-protocol integration in the existing technology. It realizes high-performance, stable and easy-to-use real-time hybrid test control, which is suitable for test scenarios such as seismic performance of building structures, dynamic response of bridge structures and vibration control of mechanical equipment.

CN120972724APending Publication Date: 2025-11-18BEIJING LINGJIE CHENGCHUAN TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511284525.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

Existing real-time hybrid test systems suffer from insufficient real-time performance, poor scalability, difficulty in integrating multiple protocols, insufficient performance optimization, and weak fault handling capabilities, making it difficult to achieve high-performance real-time hybrid test control on general-purpose hardware platforms.

Method used

A real-time hybrid test control system based on Linux-RT is adopted, which combines the deterministic scheduling capability of the Linux real-time kernel, multi-protocol communication fusion technology and high-performance data processing algorithms. Through a real-time system manager, real-time actuators, data processing pipelines, multi-protocol communication interfaces and real-time performance monitoring modules, deterministic real-time response, flexible hardware platform, multi-protocol support and efficient data processing are achieved.

Benefits of technology

It provides deterministic real-time responses, supports multiple communication protocols, reduces development costs, improves system scalability and performance, ensures system stability and ease of use, and adapts to the needs of different testing scenarios.

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Abstract

The invention relates to a real-time hybrid test control and test system and method based on a Linux-RT system and application, and belongs to the technical field of real-time hybrid tests of structural engineering. Comprising the following steps of: realizing deterministic conversion of states by adopting a real-time system manager of a singleton mode and an atomic state variable; according to the real-time executor based on the SCHEDFIFO scheduling strategy, affinity binding of a high-priority thread and a CPU is set, and periodic task scheduling of microsecond-level precision is achieved; a lambda functional programming data processing pipeline is adopted, and efficient data transmission of a filter chain is achieved through a zero copy mechanism; multi-protocol communication interfaces of UDP (User Datagram Protocol), EtherCAT (Ethernet Control Automation Technology) and WebSocket are supported, and a uniform abstraction layer is provided to realize low-delay data exchange between a numerical value and a physical substructure; and a real-time performance monitoring module adopting an exponential moving average algorithm provides accurate statistics of execution time and jitter.
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