Its size was effectively decreased by a sub wavelength resonance cavity. 以异性材料为基底的亚波长谐振腔结构有效降低了天线体积。
Results show that the bionic flying can be more easily realized when the scaling sizes are decreased, thus making high flapping frequency motion by the resonance, and meeting the power needs of the flapping wing for the electrostatic, the electromagnetic and piezoelectric actuators. 分析结果表明,当尺寸减小时,仿生飞行更容易实现:通过共振能实现高频运动,微静电、电磁和压电驱动器都能满足扑翼系统功率需求。
When decreasing the eccentric distance and the order of main resonance, increasing damping in a drive shaft, the amplitude of bending resonance can be decreased, and the amplitude jump and bifurcation of main resonance are removed. 减小质量偏心,降低传动轴最大主共振的阶数,加大阻尼,能减小横向弯曲共振的振幅;可消除主共振的振幅突变,使传动轴横向弯曲主共振不分岔。
It is shown that, when the scattering length increased via Feshbach resonance, the black soliton transforms into the stable gray soliton in condensates; and when the scattering length decreased by Feshbach resonance, the gray soliton turns into the black soliton. 结果表明,通过Feshbach共振使散射长度随时间增加时,凝聚体中的黑孤子会演化成稳定的灰孤子;当散射长度随时间减少时,凝聚体中的灰孤子将向黑孤子演化。