摘要
为解决在高超声速脉冲风洞中进行大长细比等特殊模型测力实验所面临的惯性补偿问题,笔者提出了多加速度计振动分离惯性补偿方法。这一方法应用在长细比达20 :1 的模型气动力实验中。
A method based on linear vibration theory is presented in this paper, aimed at resolving the inertial compensation problem for some special models which cause two or more vibration modes that lie in the critical frequency range in impulse wind tunnel force tests. In this method, every accelerometer is so mounted as to sense mainly one different mode required to be compensated, and a linear network is designed to decouple the accelerometers' signals, outputs every vibration mode's signal by which compensation can be done more easily. This method was successfully used in an experiment whose model's slenderness ratio is 20∶1, and it performed very well.
出处
《流体力学实验与测量》
CSCD
1999年第4期57-61,共5页
Experiments and Measurements in Fluid Mechanics
关键词
惯性补偿
加速度计
脉冲风洞
气动力测量
天平
inertial compensation
accelerometer
impulse wind tunnel
force measurements
balance
