Six Degree-of-freedom Strong Ground Motions Measurement by Using Eight Accelerometers

摘要：

A new integrated measuring system with eight forcebalance accelerometers was proposed to obtain a direct measurement of six degree-of-freedom (DOF) strong ground motions, including three rotational and three actual translational acceleration components without gyroscopes. In the proposed measuring system, the relationship between the outputs from eight accelerometers and the six DOF motions of the measuring system under an earthquake were described by differential equations. These equations were derived from the positions and directions of eight accelerometers in the measuring system. The third Runge-Kutta algorithm was used to guarantee the accuracy of numerical calculation. All the algorithms used to compute the six DOF components of strong ground motions had been implemented real time in Digital Signal Processor (DSP). The ways to compensate and eliminate the distortion of measured results caused by position and direction errors were also proposed respectively.

作者: Zhenyu Yang Haiyan Lu Zongping Wang Zhirui Gui Li Cai

作者单位: China Earthquake Disaster Prevention Center

会议类型: 国际会议

会议名称: 2010 International Conference on Computer,Mechatronics,Control and Electronic Engineering(2010计算机、机电、控制与电子工程国际会议 CMCE 2010)

会议地点: 长春

会议语种:英文

页码: 559-562

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）