深海平台操舵机构运动精度可靠性分析
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摘要
针对深海平台操舵机构运动精度不足严重威胁平台结构安全的问题,以某深海平台摆缸式操舵机构为例,将构件加工尺寸、角度等参数考虑成随机变量,建立摆缸式操舵机构运动精度可靠性分析模型,给出可靠性求解方法及算例;分析运动精度与舵叶偏角之间的关系发现,舵柄与油缸夹角与90°相差越大,舵偏角误差越大;通过计算灵敏度因子得到各因素对操舵机构运动精度失效的影响程度排序及改进建议。
For the problem that lack of kinematic accuracy of steering mechanism threatens the safety of deep-sea platform, taking the swing-cylinder steering mechanism of a certain deep-sea platform as an example, a kinematic accuracy reliability analysis model of steering mechanism was established, in which the scantling and angle of each component were treated as random variable. The relation of kinematic accuracy and rotation of rudder is studied. The results showed that the angle between tiller and cylinder is farther from 90°, the rotating error of rudder is larger. By calculating the sensitivity factor, the scheduling of failure effect of all parameters was obtained, and suggestions for improvement were given.
For the problem that lack of kinematic accuracy of steering mechanism threatens the safety of deep-sea platform, taking the swing-cylinder steering mechanism of a certain deep-sea platform as an example, a kinematic accuracy reliability analysis model of steering mechanism was established, in which the scantling and angle of each component were treated as random variable. The relation of kinematic accuracy and rotation of rudder is studied. The results showed that the angle between tiller and cylinder is farther from 90°, the rotating error of rudder is larger. By calculating the sensitivity factor, the scheduling of failure effect of all parameters was obtained, and suggestions for improvement were given.
引文
[1] 司马灿.深海空间站工程发展战略与对策[C].第140场中国工程科技论坛:中国海洋工程与科技发展战略会议论文集,2012:141-145.
[2] 庞欢,喻天翔,宋笔锋.平面连杆机构运动精度可靠性及灵敏度分析[J].中国机械工程,2014,25(18):2415-2421
[3] LAMBONIA M, IOOSS B, POPELIN A L, et al. Derivative-based global sensitivity measures: General links with Sobol’ indices and numerical tests [J]. Mathematics and Computers in Simulation, 2013,87:45-54
[4] 巩祥瑞,吕震宙,左健巍.两种基于方差的全局灵敏度分析W指标改进算法[J].航空学报,2016,37(6):1888-1898.
[5] 吕程诚,高宗战,张峰,等.结构可靠性灵敏度因子的新标准化指标[J].航空计算技术,2013,43(5):27-30,35.
[6] 中国船舶工业集团公司.船舶设计实用手册(舾装分册)[M].3版.北京:国防工业出版社,2013.
[7] 国家质量技术监督局.一般公差未注公差的线性和角度尺寸的公差GB/T 1804—2000[S].北京:中国标准出版社,2000.
[2] 庞欢,喻天翔,宋笔锋.平面连杆机构运动精度可靠性及灵敏度分析[J].中国机械工程,2014,25(18):2415-2421
[3] LAMBONIA M, IOOSS B, POPELIN A L, et al. Derivative-based global sensitivity measures: General links with Sobol’ indices and numerical tests [J]. Mathematics and Computers in Simulation, 2013,87:45-54
[4] 巩祥瑞,吕震宙,左健巍.两种基于方差的全局灵敏度分析W指标改进算法[J].航空学报,2016,37(6):1888-1898.
[5] 吕程诚,高宗战,张峰,等.结构可靠性灵敏度因子的新标准化指标[J].航空计算技术,2013,43(5):27-30,35.
[6] 中国船舶工业集团公司.船舶设计实用手册(舾装分册)[M].3版.北京:国防工业出版社,2013.
[7] 国家质量技术监督局.一般公差未注公差的线性和角度尺寸的公差GB/T 1804—2000[S].北京:中国标准出版社,2000.