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A design of a marine radar mast system for minimum vibration.

机译：一种用于最小振动的船用雷达桅杆系统的设计。

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This experimental research focused on four areas: (a) the design of a new procedure for imitating the dynamic behavior of an electronic base plate on a radar mast system; (b) determination of a reasonable oscillation modal state; (c) avoidance of the destruction of the ability of the radar on the mast of a ship to receive and analyze incoming signals; and (d) design of a vibration absorber and vibration isolator based on an oscillation frequency. An adapted design for the vibration absorber and vibration isolator contributed to the prevention of excessive amplitude being produced by random forces acting upon a radar system equipped on the mast of a ship.; In this research, finite element analysis was used to analyze the natural frequency and the modal state of the ship's mast in order to establish the reasonable finite element analysis model. This technique became the basis for the design of the adapted vibration isolator and the vibration absorber. In designing the adapted dynamic vibration absorber and vibration isolator, the Lagrange's engineering mathematical equation was used to study the system movement equation under differing random forces. This system movement equation led to the converted function between the radar replacement alteration and the random force. By use of a Lagrange's optimum value method, the researcher obtained the optimum frequency modulation ratio and the optimum damping ratio of the dynamic vibration absorber so that the radar displacement alteration reached the minimum value. The optimum mass ratio between the vibration absorber and the radar base plate was located by studying the radar displacement alteration under its optimum dynamic absorber. The optimum frequency modulation ratio and the optimum damp ratio were determined by studying the effect of the spring constants of the vibration isolator, the damp ratio, and the position of the random force. The radar oscillation before and after installing the optimum dynamic absorber were compared to illustrate the accuracy of the field test for sea travel.
机译：这项实验研究集中在四个方面：（a）设计一种新的程序，以模仿雷达桅杆系统上电子底板的动态行为； （b）确定合理的振荡模态； （c）避免破坏船舶桅杆上的雷达接收和分析输入信号的能力； （d）基于振荡频率的减振器和隔振器的设计。减震器和隔振器的改进设计有助于防止作用在船桅杆上的雷达系统受到随机作用力而产生过大的振幅。在本研究中，通过有限元分析来分析船舶桅杆的固有频率和模态，以建立合理的有限元分析模型。该技术成为设计合适的隔振器和减震器的基础。在设计自适应动态吸振器和隔振器时，使用拉格朗日的工程数学方程式研究了在不同随机力作用下的系统运动方程式。该系统运动方程式导致了雷达替换变更和随机力之间的转换函数。通过使用拉格朗日最佳值方法，研究人员获得了动态吸振器的最佳频率调制比和最佳阻尼比，从而使雷达位移变化达到最小值。通过研究在其最佳动态吸收器下的雷达位移变化，确定了减震器与雷达底板之间的最佳质量比。通过研究隔振器的弹簧常数，阻尼比和随机力的位置，可以确定最佳的调频比和最佳的阻尼比。比较了安装最佳动态吸收器之前和之后的雷达振荡，以说明海上航行现场测试的准确性。

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