基于模型预测控制的船舶动力定位约束控制

研究了模型预测控制在船舶动力定位系统约束控制中的应用,建立了3自由度动力定位船舶的数学模型,提出了船舶动力定位系统设计中应考虑的各种约束.针对某供应船,根据模型预测控制理论进行了动力定位控制器设计,使约束的处理问题贯穿于控制系统设计的始终.仿真试验验证了模型预测控制算法应用于船舶动力定位约束控制的有效性.     

基于模型融合的自主潜器推进系统故障诊断

采用对自主潜器(AUV)的全局状态模型与推进器局部模型融合的方法,实现对水下机器人推进系统的实时故障诊断.在诊断过程中,对AUV的特征状态参数进行残差信息融合,提出了故障诊断准则,保证了故障诊断的可靠性;并以仿真试验验证了该方法的有效性.     

Simulation analysis of static and dynamic characteristics of once-through steam generator in concentric annuli tube

1 Introduction1 Steam generator is an important equipment of an integrated pressurized water reactor. In recent design, the once-through steam generator (OTSG) is mostly applied because it delivers superheated steam and requires no separators. Moreover, i…     

H∞ Robust Fault-Tolerant Controller Design for an Autonomous Underwater Vehicle＇s Navigation Control System

In order to improve the security and reliability for autonomous underwater vehicle (AUV) navigation, an H_∞ robust fault-tolerant controller was designed after analyzing variations in state-feedback gain. Operating conditions and the design method were then analyzed so that the control problem could be expressed as a mathematical optimization problem. This permitted the use of linear matrix inequalities (LMI) to solve for the H_∞ controller for the system. When considering different actuator failures, these conditions were then also mathematically expressed, allowing the H_∞ robust controller to solve for these events and thus be fault-tolerant. Finally, simulation results showed that the H_∞ robust fault-tolerant controller could provide precise AUV navigation control with strong robustness.     

Intelligent Co-ordinate Control for Mating Process of Underwater Vehicle Based on TFPN

In order to reduce time and improve the probability of successful matting it is useful to co-ordinate between the movement control and mating process of the underwater vehicle. Because it is hard to control with the common method under the condition of mating process, the hierarchical intelligent control is introduced. Timed fuzzy Petri net (TFPN) , which is the integration of PN and fuzzy reasoning, is used in the design of coordinate level of hierarchically intelligent control. It made the control process better in reflecting the characteristics of time-driven, event-driven, fuzzy information and so on. The test shows that TFPN could shorten the time of mating and enhance the efficiency.     

UUV的故障树仿真建模与分析

简要介绍故障树分析的传统方法,建立了以无人水下航行器(Unmanned Underwater Vehicle,UUV)不能正常工作为顶事件的故障树.采用蒙特卡罗随机抽样方法,建立UUV的故障树仿真模型,编制了MATLAB故障树仿真程序,对故障树进行定量分析.求出该系统的平均无故障工作时间,并得出了UUV系统的寿命分布曲...     

海底管线检测与维修装置智能综合操纵和动力定位系统

浅海海底管线电缆检测与维修装置(简称PCDR装置)系国内第一艘用于浅海海底管线电缆检测与维修的特种作业装置,智能综合操纵和动力定位(简称IODP)系统是其中的核心操控设备.本文主要介绍IODP系统的技术性能指标、系统组成和计算机选型方案、分层递阶智能控制结构、工作方式、综合显示与集中操纵设计思想,并给出对线控位功能仿真试验结果.IODP系统已完成该装置在长江的水面和潜浮控制航行试验,结果表明:系统运行可靠、人机界面形象直观,操纵灵活.     

Application of adaptive fuzzy control technology to pressure control of a pressurizer

A pressurizer is one of important equipment in a pressurized water reactor plant. It is used to maintain the pressure of primary eoolant within allowed range because the sharp change of eoolant pressure affeets the security of reaetor,therefor, the study of pressurizer‘s pressure eontrol methods is very important. In this paper, an adaptive fuzzy eontroller is presented for pressure control of a pressurizer in a nuclear power plant. The controller can on-line tune fuzzy eontrol rules and parameters by self-learning in the actual control proeess, whieh possesses the way of thinking like human to make a deeision. The simulation results for a pressurized water reactor plant show that the adaptive fuzzy eontroller has optimum and intelligent eharacteristies, whieh prove the eontroller is effective.     

积分变结构控制原理在AUV航向控制中的应用仿真

文章研究了积分变结构控制在自主水下机器人(AUV)航向控制系统中的应用,建立了AUV水平面的非线性模型,并在特定的工作点对模型进行了线性化处理,得到了AUV的控制设计线性模型.根据变结构控制理论设计了积分变结构控制器,并给出了消除抖振的方法.仿真试验验证了该设计方法的有效性.