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船舶偏航运动控制策略 被引量:1
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作者 时昌金 张绍荣 邱云明 《上海海事大学学报》 北大核心 2007年第1期115-120,共6页
为使船舶沿预定的航向航行,应根据船舶偏离航向的情况适时合理地改变舵角以修正航向.对舵角的控制既要考虑导致船舶偏离航向诸因素,又要考虑不同船舶在不同装载状态下的操纵性能.在建立船舶偏航运动模型的基础上,对偏航运动规律进行分析... 为使船舶沿预定的航向航行,应根据船舶偏离航向的情况适时合理地改变舵角以修正航向.对舵角的控制既要考虑导致船舶偏离航向诸因素,又要考虑不同船舶在不同装载状态下的操纵性能.在建立船舶偏航运动模型的基础上,对偏航运动规律进行分析,提出适时合理地采用舵角进行偏航控制的策略. 展开更多
关键词 船舶:航向 偏航运动 偏航建模 舵角控制
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Theoretical Study of Double Cost Function Linear Quadratic Regulator(LQR)
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作者 姜澜 王信义 永井正夫 《Journal of Beijing Institute of Technology》 EI CAS 2000年第1期80-86,共7页
Double cost function linear quadratic regulator (DLQR) is developed from LQR theory to solve an optimal control problem with a general nonlinear cost function. In addition to the traditional LQ cost function, anothe... Double cost function linear quadratic regulator (DLQR) is developed from LQR theory to solve an optimal control problem with a general nonlinear cost function. In addition to the traditional LQ cost function, another free form cost function was introduced to express the physical need plainly and optimize weights of LQ cost function using the search algorithms. As an instance, DLQR was applied in determining the control input in the front steering angle compensation control (FSAC) model for heavy duty vehicles. The brief simulations show that DLQR is powerful enough to specify the engineering requirements correctly and balance many factors effectively. The concept and applicable field of LQR are expanded by DLQR to optimize the system with a free form cost function. 展开更多
关键词 optimal control linear quadratic regulator (LQR) search algorithm front steering angle compensation control
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Application of Monte Carlo method in rudder control precision 被引量:2
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作者 凡永磊 陈国光 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2015年第4期378-383,共6页
After the trajectory simulation model of rudder control rocket with six degrees of freedom is established by Matlab/ Simulink, the simulated targeting of rudder control rocket with rudder angle error and starting cont... After the trajectory simulation model of rudder control rocket with six degrees of freedom is established by Matlab/ Simulink, the simulated targeting of rudder control rocket with rudder angle error and starting control moment error is carried out respectively by means of Monte Carlo method and the distribution of impact points of rudder control rocket is counted from all the successful subsamples. In the case of adding interference errors associated with rudder angle error and starting time error, the simulation analysis of impact point dispersion is done and its lateral and longitudinal correction abilities at different targeting angles are simulated to identify the effects of these factors on characteristics and control precision of the rudder control rocket, which provides the relevant reference for high-precision design of rudder control system. 展开更多
关键词 rudder control precision rudder angle error starting control time error Monte Carlo method
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