摘要
为了确保盾构机液压推进系统的工作状态稳定,通过建立盾构机液压推进系统的数学模型,求出传递函数,并对该系统的稳定性进行了分析。研究结果表明:减小调速阀的流量增益,增大液压缸无杆腔活塞面积、液压固有频率、液压阻尼比等,系统的稳定性将得到提高。若阻尼比变化变大,系统的稳定性将变差。增大液压缸活塞面积、系统的工作压力,或者减少液压油缸的体积、活塞及负载折算到活塞上的总质量,以及净化液压油液中水份与空气,系统的响应速度将得到提高。
In order to maintain a steady state of hydraulic propulsion system for shield tunneling machine. It set up a mathematical model of hydraulic propulsion system for shield tunneling machine, obtains transfer function, and the stability of the system is analyzed. The results showed that the system stability will be improved when the flow gain of velocity modulation valve is reduced, or piston area of hydraulic cylinder rod chamber increased, hydraulic natural frequency increased, hydraulic damping ratio increased. The damping ratio increased, the system stability will be deteriorated. The systemg response speed will be improved when the piston area of hydraulic cylinder is in- creased, system working pressure increased, or volume of hydraulic cylinder is reduced, pistons and is converted total mass of load reduced, or purification of the water and air in hydraulic oil
出处
《液压与气动》
北大核心
2014年第3期54-57,共4页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金资助项目(51008087)
广东省科技计划资助项目(2012A090300011)
韶关市科技计划资助项目(2011CX/K14)
关键词
稳定性
影响因素
盾构机
液压推进系统
stability, influencing parameters, shield tunneling machine, hydraulic thrust system
