Design of Abnormal Response Testing for the LingShu PCS

This paper presents the design of a systematic and extensible abnormal response testing framework for the LingShu Plasma Control System (LingShu PCS), developed to meet the advanced operational requirements of next-generation fusion devices such as the China Fusion Engineering Test Reactor (CFETR). The framework aims to evaluate the robustness, fault tolerance, and adaptability of the control system under a wide range of complex and dynamic scenarios. It systematically addresses three primary categories of abnormal conditions: electromagnetic measurement errors, control-related abnormal events, and plasma operation anomalies. Two complementary testing paths are proposed: a closed-loop simulation path using physics-based models for real-time interaction, and an open-loop historical replay path based on experimental data from the EAST tokamak. These testing paths are implemented based on the LingShu PCS and PCSVP, supporting automated and iterative testing workflows. The modular anomaly injection mechanism enables precise control over fault types and injection timing, thereby facilitating in-depth analysis of system response behavior. The framework also supports data-driven test case construction through the EAST Shot Feature Database and MDSplus, allowing for realistic scenario reproduction and quantitative evaluation of control performance. By combining model-based simulation and historical data replay, this work provides a comprehensive platform for verifying the abnormal response capability of LingShu PCS, laying the groundwork for its deployment in future mission-critical plasma control tasks.