Development of Gyroscopic Damper for Vibration Control

索道载体没有交流电源，本文对被动陀螺阻尼器进行了研究。万向节由旋转弹簧和旋转阻尼器支撑。万向节的进动是由主系统的滚动引起的，它产生一个时刻来抑制主系统的滚动。这种被动陀螺阻尼器耗能不大，重量轻，适用于索道托架。研究人员发展了被动陀螺阻尼器，并对优化设计方法、最大稳定性理论、不动点理论、最小方差准则、随机激励下的数值优化、加速度最小化、遗传算法、稳定度最大化进行了研究。构造了被动陀螺阻尼器。转子重量为30 kg，转速为3000rpm，阻尼由硅油的粘度提供。在摇板式试验台上进行了基础试验，取得了较好的效果。将两个陀螺仪阻尼器安装在载重2000 kg、自振周期为3.5s的31名乘客的真实吊篮上。对陀螺阻尼器的固有频率和阻尼系数进行了精确的调谐。测量了初始角度为3度和5度时的阶跃响应。吊篮的摆动明显减小，并在30秒内多次停止摆动。研究表明，被动陀螺阻尼器是一种适用于吊车、船舶等具有转动振动的结构的减振装置。

Ropeway carrier does not have AC power supply, the passive gyroscopic damper was investigated in this research. The gimbal is supported by a rotary spring and a rotary damper. The precession of the gimbal is caused by a rolling of the main system and it yield a moment to supress the rolling of the main system. Since this passive gyroscopic damper does not consume much energy and is light, it is suitable for a ropeway carrier. The investigators have developed the passive gyroscopic damper and made research on the optimum design methods, the maximumstability theory, the fixed points theory, the minimum variance criteria, the numerical optimization under random excitation, the accelerance minimization, the genetic algorism, the stability degree maximization. The passive gyroscopic dampers were constructed. The weight of rotor was 30kg, rotational speed was 3000rpm, damping was given by viscosity of silicon oil. The basic test was carried out with a seesaw-type test bench and good result was obtained. Two gyroscopic damper were set on a real gondola for 31 passengers whose weight was 2000kg and natural period was 3.5s. The natural frequency and the damping coefficient of the gyroscopic damper were tuned precisely. The step response with the initial angle of 3 and 5 degrees was measured. The swing of gondola decreased remarkably and stopped in several periods, 30 seconds. This research showed that the passive gyroscopic damper is one of suitable devices for structures which have rotational vibration such as a gondola and a ship.