Most of the fin stabilizers we use now are angle - feedback system , whose control torque is gotten by the calculation of fin angle 目前使用的绝大多数减摇鳍都是角度反馈系统,它通过鳍的转角来计算控制力矩。
Take puts the winding up roller as the research object , has made the detailed analysis to its state of motion and a program scheme for calculating the tension control torque was provided 以放卷辊为研究对象,对其运动状态作了详细的分析,进而给出了计算控制力矩的程序框图。
The optimum balancing of a four bar linkage with elastic links is studied , in which the control torque of redundant drives is taken as the design variable , and the shaking force and shaking moment of the mechanism are taken as the objective . the numerical simulation shows validity of the method 针对一平面弹性四连杆机构,以其震动力和震动力矩的加权和为目标函数,以冗余驱动力矩为变量,对附加冗余驱动的弹性机构进行最优平衡,其仿真结果表明该方法是有效的。
Fin stabilizer is a kind of active stabilizer , which is designed on the principle of torque counteraction . fin stabilizer applied at present is an angle feedback system which calculate the controlling torque through the fin angle . because the relationship between the lift produced by fin and the fin angle is mainly determined by the hydrodynamic experiment , so there are some defects 目前使用的减摇鳍是一个角度反馈系统,它通过鳍的转角来计算控制力矩,这样就存在一些不足之处,因为鳍上产生的升力和鳍角的对应关系主要靠鳍模的水动力试验来求得。
Because the relationship between the lift on the fin and the fin angle is gotten by the static hydrodynamic experiment , which has great error , especially dynamic hydrodynamic experiment , the control torque gotten by the experiment can not counteract the wave torque well and the stabilization result is not perfect 而鳍的水动力试验存在着很大的误差,特别是在动态条件下,鳍的水动力特性测试更困难,所以这种通过计算求得控制力矩的方法产生的鳍升力无法很好地抵消波浪力矩,因而影响了减摇效果。
A set of non - linear differential equation of this model is formulated based on lagrange ’ s equation . the tension of the cable , the control force of translation and the control torque of rotation are obtained by the method of newton ’ s laws in vector space . the tethered mass system is modeled as a spherical pendulum 本文基于一种常见的绳系单体系统,运用lagrange方程建立了该系统的非线性运动微分方程,采用矢量法对该运动微分方程进行了校核,并推导出吊索的张力、变幅控制力和回转控制力。