摘要
为解决迈步式超前支护过渡过程支撑力波动问题,提高支护效率,采用先进的电液比例控制技术,结合阀控缸的理论基础,提出通过调节比例换向阀阀芯位移来控制超前支护支撑力的控制策略。基于超前支护的机电液系统,建立控制系统的数学模型及仿真模型,利用AMESim软件对系统进行仿真,分析不同阀芯位移控制曲线在升架和降架过程中对支撑力的控制效果。结果表明,基于体积增量原理的阀芯位移控制曲线符合实际工况要求。结合对样机的实验研究,对比分析了实验与仿真的控制规律,结果验证了所提出控制策略的合理性。
To solve the problem of fluctuations of supporting force during transition process and improve the efficiency of support,using advanced electro-hydraulic proportional control technology,combining theoretical basis of valve control cylinder,a control strategy was put forward,that used spool displacement of the direction valve to control supporting force of cylinder groups.For the electro-hydraulic system of advanced supporting equipment,the mathematical model and simulation model of control system were established.The system simulation was carried out by AMESim software,the control effect of different control spool displacement curves was analyzed during supporting rack up and down.The results show that the spool displacement control curve that studys on volume increment principle is conform to the requirements of the actual working conditions.Combining experimental study of the prototype,the control law of experiments and simulation was analyzed and the reasonableness of the control strategy was verified.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2015年第15期2103-2108,共6页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51304107)
辽宁省教育厅创新团队资助项目(LT2013009)
关键词
迈步式超前支护
过渡过程
支撑力控制
仿真
stepping-type advanced supporting equipment
transition process
control of supporting force
simulation
