When analysing the longitudinal damping moment, not only should the pitching damping moment caused by the pitching angular velocity be considered, but the damping moment of the lag of wash caused by the angle of changing rate be calculated. 分析纵向阻尼力矩时,除考虑w*z引起的俯仰阻尼力矩Mwzzwz外,还应估算出dαdt引起的洗流时差阻尼力矩Mαzα。
We designed a TV auto-tracking system of photoelectric theodolite for taking high-precision tracking of the targets with rapid velocity and high acceleration. We utilized the technique of velocity lag compensation, acceleration lag compensation and double closed loop control system in the design. 为了精密跟踪速度快、加速度大的被测目标,采用双闭环控制策略,及速度滞后补偿和加速度滞后补偿技术,设计了光电经纬仪电视自动跟踪系统。
The change of velocity should be noticed during the data treatment because of the velocity lag. 数据处理时要注意到由于来流风速的滞后而产生的速度变化。
There are velocity and acceleration dynamic lag errors in the Model I system. I型系统存在速度、加速度动态滞后误差。
It is found that the more lag of the diversification of velocity profiles relative to the averaged velocity in diffuser/ nozzle components, the less lag of the diversification of flow relative to the diversification of pressure, the flow of the micropump increase more greatly. 研究发现扩张管/收缩管组件中速度波形的变化相对于速度的滞后越大,流量的变化相对于压强滞后越小则越有利于流量的提升。