Development of Highly Versatile On-Line Hybrid Test Systems using DSP units

研究了利用数字信号处理器（DSP）开发高通用性的混合测试系统。该试验方法基于实时混合加载试验，为了评价结构的真实的振动特性，基于混合试验技术和子结构技术原理的子结构混合振动台（SHST）试验方法，本文研究了试验结构和构件的时间动力响应。试验方法包括对试验子结构进行振动台试验或加载试验，数值子结构的数值计算。在这项研究中，测试方法的可靠性和准确性得到保证的动态特性，包括相位滞后的驱动器和振动台响应的补偿，使用数字滤波技术的应用程序基于DSP的控制系统。通过几类非线性动力相互作用问题的算例验证了该方法的有效性。验证试验包括一个案例的调谐质量阻尼器安装到现有的钢筋混凝土桥梁柱作为对策的风振，储液罐与地震隔离器和磁流变（MR）阻尼器。所提出的方法的效果在验证测试中清楚地显示。

Development of the highly versatile hybrid testing system taking advantage of the use of DSP is studied. The test method is based on the real-time hybrid loading test, and the substructure Hybrid Shake Table (SHST) test method based on the principle of the hybrid testing technique and the substructure technique in order to evaluate t he real-time dynamic response of test structures and structural components is studied This test method consists of the shake table test or loading test using actors for the experimental substructure that is a part of the structural system and numerical computation for the numerical substructure. In this study, the reliability and accuracy of the test methods are secured by the compensation of the dynamic characteristics including the phase lag of the actuators and the shaking table response using the application of digital filtering technique to the DSP-based control system. The capability of the test method is demonstrated by several kinds of nonlinear dynamic interaction problems. The validation tests includes a case of a Tuned Mass Damper installed to an existing RC bridge column as the countermeasure to the wind induced vibration, liquid storage tank with seismic isolators and Magneto-Rheological(MR) dampers. The effect of the proposed method is clearly shown in the validation tests.