波登管力反馈型2D压力伺服阀特性
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摘要
设计了主要用于飞机刹车系统的2D压力伺服阀,其阀芯具有移动自由度和旋转自由度。将波登管作为压力反馈单元输出反馈力矩,与拨杆拨叉联动,实现与主阀的闭环力反馈,从而保持其压力输出恒定;分析了波登管力反馈机构的传力方式,建立了2D压力伺服阀的数学模型,仿真分析了主阀的静动态特性;设计了样机实验方案并搭建实验平台,实验结果表明:2D压力伺服阀输出压力与旋转电磁铁输入电流基本成线性关系,输出压力的阶跃响应时间约为18 ms。实验结果与仿真分析结果基本一致。
2D pressure servo valves mainly applied to aircraft brake systems were designed,whose spools had linear movements and rotary movements.Bourdon tube was used as pressure feedback unit,and the output feedback torques were linked with shift lever forks to realize the closed loop force feedback with the main valves.Pressure outputs were kept constant.Force transfer method of Bourdon tube force feedback mechanism was analyzed,mathematical model of the 2D pressure servo valves was established,static and dynamic characteristics of the main valves were simulated and analyzed.A prototype experimental program was designed,and an experimental platform was built. The experimentalal results show that the output pressures of the 2D pressure servo valves are basically linear with the input current of the rotating electromagnets,and the step response time of the output pressures is about 18 ms.The experimental results are basically consistent with the simulation ones.
2D pressure servo valves mainly applied to aircraft brake systems were designed,whose spools had linear movements and rotary movements.Bourdon tube was used as pressure feedback unit,and the output feedback torques were linked with shift lever forks to realize the closed loop force feedback with the main valves.Pressure outputs were kept constant.Force transfer method of Bourdon tube force feedback mechanism was analyzed,mathematical model of the 2D pressure servo valves was established,static and dynamic characteristics of the main valves were simulated and analyzed.A prototype experimental program was designed,and an experimental platform was built. The experimentalal results show that the output pressures of the 2D pressure servo valves are basically linear with the input current of the rotating electromagnets,and the step response time of the output pressures is about 18 ms.The experimental results are basically consistent with the simulation ones.
引文
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[10]RUAN J,BURTON R,UKRAINETZ P.Direct Actuated Digital Servo Valve[J].The Ninth Scandinavian International Conference on Fluid Power.Linkoping,2005:450-461.
[11]左希庆,阮健,李胜,等.波登管2D压力伺服阀反馈装置的特性研究[J].中国机械工程,2017,28(4):451-455.ZUO Xiqing,RUAN Jian,LI Sheng,et al.Research on Characteristics of Bourdon Tube 2D Pressure Servo-valve Feedback Equipment[J].China Mechanical Engineering,2017(4):451-455.
[12]郑磊,胡建波.基于STAMP/STPA的机轮刹车系统安全性分析[J].航空学报,2017,38(1):246-256.ZHENG Lei,HU Jianbo.Safety Analysis of Wheel Brake System Based on STAMP/STPA[J].Acta Aeronautica et Astronautica Sinica,2017,38(1):246-256.
[13]黄澄,焦宗夏,尚耀星.考虑管路的飞机液压刹车系统压力振荡分析[J].北京航空航天大学学报,2014,40(2):210-215.HUANG Cheng,JIAO Zongxia,SHANG Yaoxing.Pressure Oscillation Analysis of Aircraft Hydraulic Braking System Considering Pipeline[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(2):210-215.*()
[2]路甬祥.液压气动技术手册[M].北京:机械工业出版社,2002:431-435.LU Yongxiang.Hydraulic&Pneumatic Technical Manual[M].Beijing:Machinery Industry Press,2002:431-435.
[3]阮健,裴翔,李胜.2D电液数字换向阀[J].机械工程学报,2000,36(3):86-89.RUAN Jian,PEI Xiang,LI Sheng.2-D Digital Directional Control Valve[J].Chinese Journal of Mechanical Engineering,2000,36(3):86-89.
[4]李胜,阮健,孟彬.2D数字阀滞环颤振补偿技术研究[J].农业机械工程学报,2011,42(3):208-214.LI Sheng,RUAN Jian,MENG Bin.Dither Compensation Technology for Hysteresis of 2D Digital Valve[J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):208-214.
[5]RUAN J,UKRAINETZ P,BURTON R.Frequency Domain Modeling and Identification of 2D Digital Servo Valve[J].International Journal of Fluid Power,2000,1(2):76-85.
[6]LI S H,RUAN J,BURTON R,et al.2D Simplified Servo Valve[J].Chinese Journal of Mechanical Engineering,2003,16(2):132-135.
[7]RUAN J,BURTON R,UKRAINETZ P,et al.Twodimensional Pressure Control Valve[J].Proceedings of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2001,215(9):1031-1039.
[8]RUAN J,BURTON R,UKRAINETZ P.An Investigation into the Characteristics of a Two Dimensional(2D)Flow Control Valve[J].Journal of Dynamic Systems Measurement&Control,2002,124(1):214-220.
[9]RUAN J,UKRAINETZ P,BURTON R.Hydraulic Bridge for Pressure Control in a P-Q Multiple Line Segment Control Valve[J].International Journal of Fluid Power,2003(4):1-7.
[10]RUAN J,BURTON R,UKRAINETZ P.Direct Actuated Digital Servo Valve[J].The Ninth Scandinavian International Conference on Fluid Power.Linkoping,2005:450-461.
[11]左希庆,阮健,李胜,等.波登管2D压力伺服阀反馈装置的特性研究[J].中国机械工程,2017,28(4):451-455.ZUO Xiqing,RUAN Jian,LI Sheng,et al.Research on Characteristics of Bourdon Tube 2D Pressure Servo-valve Feedback Equipment[J].China Mechanical Engineering,2017(4):451-455.
[12]郑磊,胡建波.基于STAMP/STPA的机轮刹车系统安全性分析[J].航空学报,2017,38(1):246-256.ZHENG Lei,HU Jianbo.Safety Analysis of Wheel Brake System Based on STAMP/STPA[J].Acta Aeronautica et Astronautica Sinica,2017,38(1):246-256.
[13]黄澄,焦宗夏,尚耀星.考虑管路的飞机液压刹车系统压力振荡分析[J].北京航空航天大学学报,2014,40(2):210-215.HUANG Cheng,JIAO Zongxia,SHANG Yaoxing.Pressure Oscillation Analysis of Aircraft Hydraulic Braking System Considering Pipeline[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(2):210-215.*()