排序方式: 共有165条查询结果,搜索用时 355 毫秒
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不同的船级社对舵系统的计算都有相应的标准。但有时依据不同的规范,计算结果甚至出入很大。作者就船舶规范在船舶舵系计算中的灵活应用作了简要的介绍。 相似文献
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操舵系统是保证船舶操纵性的重要系统,关系到船舶及船员、旅客、货物等生命和财产的安全,无论是设计、加工、安装还是检验,都必须引起高度的重视,结合操舵系统问题实例,介绍分析方法和改进措施。 相似文献
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Given the uncertainty of parameters and the random nature of disturbances that effect a ships course, a robust course controller should be designed on the basis of rudder/flap vector control. This paper analyzes system uncertainty, and the choice of weighting functions is also discussed. When sea waves operate on a ship, the energy-concentrating frequency varies with the angle of encounter. For different angles of encounter, different weighting functions are designed. For the pole of a nominal model existing in an imaginary axis, the bilinear-transform method is used. The "2-Riccati" equation is adopted to solve the H∞ controller. A system simulation is given, and the results show that, compared with a PID controller, this system has higher course precision and more robust performance. This research has significant engineering value. 相似文献
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按照中国船级社规范规定的舵计算模型,介绍矩阵法在舵系计算当中的编程实现,理论分析和有限元计算表明该编程方法可以适应不同的结构形式和支撑条件,计算结果可靠。 相似文献
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LIU Sheng FANG Liang College of Automation Harbin Engineering University Harbin China 《船舶与海洋工程学报》2007,(3)
Given the uncertainty of parameters and the random nature of disturbances that effect a ships course, a robust course controller should be designed on the basis of rudder/flap vector control. This paper analyzes system uncertainty, and the choice of weighting functions is also discussed. When sea waves operate on a ship, the energy-concentrating frequency varies with the angle of encounter. For different angles of encounter, different weighting functions are designed. For the pole of a nominal model existing in an imaginary axis, the bilinear-transform method is used. The "2-Riccati" equation is adopted to solve the H∞ controller. A system simulation is given, and the results show that, compared with a PID controller, this system has higher course precision and more robust performance. This research has significant engineering value. 相似文献
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