Based on analyzing the mining equipment life evaluation theoretical system, the equipment life evaluation target system of the mining machinery is put forward taking the economic life, security life, reliability life ...Based on analyzing the mining equipment life evaluation theoretical system, the equipment life evaluation target system of the mining machinery is put forward taking the economic life, security life, reliability life and technical life as the targets. Then, the structure and model of the mining equipment life evaluation system are established and prepared for the realization of the system theoretically. Taking hydraulic support as the research object, the life evaluation system of hydraulic support is established and practice shows that the life evaluation system is feasible.展开更多
基金supported by the Natural Science Foundation of Shanxi Province,China under Grant Number:2008012006-2
文摘Based on analyzing the mining equipment life evaluation theoretical system, the equipment life evaluation target system of the mining machinery is put forward taking the economic life, security life, reliability life and technical life as the targets. Then, the structure and model of the mining equipment life evaluation system are established and prepared for the realization of the system theoretically. Taking hydraulic support as the research object, the life evaluation system of hydraulic support is established and practice shows that the life evaluation system is feasible.
文摘本文针对一种新型遥控无人潜水器(Remote Operated Vehicle,ROV)拖曳采集装置(Mining Robot,MRT)的路径跟踪问题,提出一种路径跟踪控制方法。首先建立简化的ROV型深海采集装置的运动模型,随后提出一种基于线性模型预测控制算法(Linear Model Predictive Control,LMPC)和非线性模型预测控制器(Nonlinear Model Predictive Control,NMPC)的路径跟踪算法。与传统的模型预测控制器(Model Predictive Control,MPC)不同,本文提出的双层模型预测控制算法(Double Model Predictive Control,DMPC)由两部分组成:(1)由MRT的LMPC控制器计算得到MRT的速度控制律,用于快速收敛MRT的跟踪误差;(2)由ROV的NMPC控制器计算得到ROV的控制输入,用于响应MRT的速度控制律。在DMPC的设计中,有效考虑状态量和控制量约束,其中为了保证ROV控制输入的平顺性,引入ROV的控制量增量约束。最后,设计仿真实验用于验证MRT的路径跟踪效果,数值仿真结果证明了该算法的有效性。