Development of On line Test Method to Simulate Earthquake Responses by Utilizing Linear Motor Drive

利用直线电机驱动模拟地震响应的在线测试方法的开发

基本信息

批准号：
61850103
负责人：
TAKANASHI Koichi
金额：
$ 7.74万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850103/
关键词：
On-line Test Method Earthquake Response Analysis Linear Motor 構造実験システム

项目摘要

The on-line computer test control method, widely utilized in many country as well as in Japan, has been examined, accepted, and improved by many researchers. The key techniques for the success of the earthquake response test of a structural model by this method are the accurate displacement control of the strokes of actuators and the precise measurements of displacements and loads.Hydraulic actuators with electro-servo control widely used in the on-line tests have the constitutional weaknesses, the insufficient rigidity and the pulsation in oil pressure. These deficiencies are sometimes exaggerated in tests on multi-degree of freedom systems where some actuators must be simultaneously controlled according to the commands from the computer based on the interration calcuation results of the equation of motion.To overcome these defects new types of the on-line test system have been developed. One system developed comprises a numerical-controlled electric motor, a trnsmission device with a … More ball screw which converts thw rotational power of the motor into translational movemants, and a micro-computer which controls the whole test procedure. amother system unilized a linear-motor firect drice instead of the screw-type positioning system.Many advantages of using these systems can be counted up. Among them, the advantage that the loading rod can be held at the exact positions required must be emphasized. Im the case of a culti-degree of freedom system, for example, a multi-story test frame, the displacement control of an actuator must be protected from the movements of other actuators. The hydtaulic actuators often fail in fulfilling this requirements.Several test structures were rested by using verious control system to find out the best control program. Under the most suitable program, the results show very high preciseness in the obtained response displacement. The control error could be surpressed within 20 microns for the screw-type system, and 5 microns for the direct dfive system. Less

许多研究人员在线计算机测试控制方法已在许多国家和日本广泛使用，已接受，接受和改进。通过这种方法对结构模型进行地震响应测试成功的关键技术是对执行器中风的准确位移控制以及位移和负载的精确测量。在线测试中广泛使用的电力储物控制机构在线测试中使用了宪法弱点，具有固定性的固定性，并具有质量压力。这些缺陷有时会在对多度自由系统的测试中夸大，在这些自由系统的测试中，必须根据计算机的命令简单地根据运动方程的相关计算结果来控制某些执行器，以克服这些缺陷，已经开发出了新类型的在线测试系统。一个开发的系统包括一个数值控制的电动机，一种带有…更多的球螺钉的TRNSsigrass设备，该设备将电动机的旋转功率转换为翻译的移动器，以及一个控制整个测试程序的微型计算机。 AMOTHEN系统统一了线性运动最终干燥，而不是螺钉型定位系统。使用这些系统的许多优势可以计数。其中，必须强调将装载杆保持在所需的确切位置的优势。 IM是自由系统培养的情况，例如，多层测试框架，必须保护执行器的位移控制侵害其他执行器的运动。 Hydrtaulic致动器通常无法满足这一要求。通过使用Verious Control System查找最佳控制程序，将几个测试结构搁置。在最合适的程序下，结果在获得的响应位移中表现出很高的精度。对于螺钉型系统，可以将控制误差在20微米中浏览，而直接DFIVE系统则可以浏览5微米。较少的