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基于核电用锆管性能测试要求,研制设计了超高压锆管内压闭端爆破测试系统。针对超高压伺服系统,推导了该压力控制伺服系统的数学模型,应用模糊PID算法控制系统加载进行爆破试验,以克服系统的非线性对电液伺服系统的不利影响。仿真结果和实验结果均表明,模糊PID控制的超高压系统具有良好的控制性能,该系统达到了对锆合金核燃料包壳管室温闭端爆破性能及材料在施加内压过程应变测试的ASTMB811-90标准要求。
Based on the performance test requirements of zirconium tube for nuclear power, a test system of internal pressure closed-end blasting of ultra-high pressure zirconium tube was developed and designed. For the high pressure servo system, the mathematical model of the pressure control servo system is deduced. The fuzzy PID algorithm is used to control the system loading for the burst test to overcome the adverse effect of the system nonlinearity on the electro-hydraulic servo system. The simulation results and the experimental results show that the fuzzy PID control of the ultra-high pressure system has good control performance, the system has reached the temperature at the closed end of the zirconium alloy nuclear fuel cladding chamber burst performance and material under the application of internal pressure during the strain test ASTMB811-90 standard requirement.