| 1. | Fin stabilizer , which has been used more than seventy years , is the main equipment to stable the ship
减摇鳍作为船舶的主要减摇装置，已经被使用了70多年，其优良的减摇效果已经得到公认。 |
| 2. | The research on lift fin stabilizer is so significant to improve stable effect and make the stabilizer work better
升力减摇鳍的研制，对于更好的发挥减摇鳍的作用，进一步提高减摇效果具有重要意义。 |
| 3. | Using sliding mode variable - structure control method to design controller , carry on stimulating and make contrast with the traditional pid in order to justify its superiority in stabilized effects
利用滑模变结构控制方法设计控制器、进行仿真，并与传统的pid控制进行仿真对比，以验证其在减摇效果上的优越性。 |
| 4. | So the motion of ship is a coupling , non - linear process with large disturbance . the paper designs a rudder / fin joint control system based on the non - linear motion model of ship , which has nice performance on attenuating the rolling as well as controlling the direction of the ship
可见船舶的运动本质上是耦合非线性、大干扰的过程，本文基于船舶的非线性运动模型进行舵鳍联合控制系统的设计，在控制航向的同时，达到较高的减摇效果。 |
| 5. | Big error exists in the hydrodynamic experiment , especially on dynamic state ; it is more difficult to test the hydrodynamic property of fin stabilizer . so the lift comes from this kind of control method ca n ' t counteract the wave torque perfectly , thereby affecting the stabilizer ' s function
由于鳍的水动力试验有很大的误差，特别是在动态条件下鳍的水动力特性测试更是困难，所以这种控制方法产生的鳍升力不能很好地抵消波浪力矩，从而影响了减摇效果。 |
| 6. | Because the designing fin and oar and the experiment fin and oar pro rata , so we can use the coefficients to calculate our designing fin and oar " s rising force . secondly , constituted the control system of pushing fin , and studied its control scheme . lastly , used matlab to simulate our control system , and applied ga to optimize the parameters of pid controller ; from the simulation result we can see the pushing fin has the ability of reducing the ship shake in all speed
最后，对推力鳍减摇装置控制系统用matlab语言进行仿真，并应用遗传算法理论，对推力鳍控制系统中的pid控制器参数进行优化，并将仿真效果与传统的鳍的减摇仿真效果进行对比，从仿真效果上可以看出，推力鳍减摇装置控制系统的减摇效果在低航速下优于传统的鳍的减摇效果，而且在中、高航速下推力鳍的减摇效果也能达到传统鳍的减摇效果，打到了设计的目的。 |
| 7. | Using 2 - d strip method and the high - speed slender body theory , the heaving motion responses in regular wave of ship with combined appendage are computed . the results are compared with the results of naked ship hull , and the anti - pitching effect of combined appendage is validated . a method of optimizing the seakeeping is provided from the aspect of the ship hull
因此本文针对船舶耐波性能的优化，提出了一种减纵摇组合附体，将半潜艏和艏鳍安装在常规单体船上，初步阐述了半潜艏和艏鳍的水动力作用机理，并按照二维切片法和高速细长体理论计算了加装组合附体后，船舶在规则波中的垂向稳态运动响应，与裸船体的结果进行了比较，验证组合附体的减摇效果，从船体本身出发提供了?种优化船舶耐波性的方法； 3 |
| 8. | In the light of the signals of roll angle and water level , we can control the air valve , and use this control method to simulate the controlled passively anti - rolling tank . simulation results indicate that this control strategy is feasible . the controlled passively anti - rolling tank can work in the wide frequency range
控制策略是根据横摇角度和边舱液位信号的变化来对气阀进行控制，采用这种控制策略对可控被动式减摇水舱进行了仿真研究，结果表明所控制策略是行之有效的，可控被动式减摇水舱能在更宽的频率范围内达到较好的减摇效果。 |
| 9. | 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。 |
| 10. | The monitoring system of the controlled passively anti - rolling tank model performance takes charge of control and regular service of anti - rolling tank . accomplishing the hardware design and software programmed of tank control , data acquisition , we process the model test of the controlled passively anti - rolling tank . according to signals of the roll angle and water level , the control system output signals to open or close the valves , and achieve some stabilized effects
本文系统地介绍了可控被动式减摇水舱监控系统的硬件设计和水舱控制、数据采集软件程序实现工作，然后进行了可控被动式减摇水舱进行了模型试验，根据横摇角度和边舱液位的信号变化来控制气阀的开启和关闭，取得了一定的减摇效果。 |
