液压伺服柔驱机构设计及其刚度连续可调分析

doi:10.13229/j.cnki.jdxbgxb20210049

Abstract

Abstract:

In order that the hydraulic manipulator outputs high stiffness while working，and changes stiffness to realize compliance while collision， the robot has corresponding flexibility under different working conditions and scenarios. A hydraulic servo flexible drive mechanism with both valve-controlled leakage and floating position was designed. Stiffness was reduced by internal and external unloading， so the robot could improve the safety of man-machine physical contact. Firstly， the joint structure and the principle of variable stiffness were introduced. Then， the dynamic simulation model was established by AMESim. The ranges of the valve controlled leakage and the radius of floating leakage were determined， when the following characteristics and motion characteristics of the mechanism were good. Next， the stiffness simulation model was established by MATLAB/Simulink， stiffness scatter values under different working conditions were obtained by simulation. Then the relationship between the single factor and the variable stiffness of the joint was analyzed. Finally， the multivariate nonlinear regression equation of joint stiffness， about floating position， valve control leakage and volume， was fitted based on MATLAB. And the comparison diagram of the initial stiffness scatters and the fitting four-dimensional curve was realized by the program. The results show that the stiffness of the flexible drive mechanism can be adjusted continuously in a wide range while ensuring good dynamic characteristics.

Key words: mechatronic engineering, valve-controlled leakage, floating position, multivariate nonlinear regression, stiffness continuously adjusted

CLC Number:

TH12

Lin JIANG,Ling ZHOU,Hui ZHAO. Design and stiffness continuously adjustable analysis of hydraulic servo flexible drive mechanism[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(7): 1499-1508.

Figures/Tables 18

Fig.1

Fig.2

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Fig.4

Table 1

Fig.5

Fig.6

Fig.7

Fig.8

Table 2

Main parameters of stiffness simulation model"

参数名称	数值
油膜宽度nπ/Dm	0.01
油膜长度l/m	0.08
油液的动力黏度μ/（Pa·s）	0.05
外力输入时产生的压差ΔP/Pa	2×10⁶
工作腔内径r $1$ /m	0.025
工作腔长度L/m	0.0731
工作腔长度R/m	0.0382
容积V $t$ /m $3$	1.26×10^-4
阀口流量系数C $d$	0.65
内泄漏q $n$ /（m $3$ ·s $- 1$ ）	1×10^-9
油液密度ρ/（kg·m $- 3$ ）	850

Table 2

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Table 3

Table 4

Fig.14

References 20

1	王旭,陈乃建,王超,等. 助老助残轮椅用绳传动机械臂结构设计[J]. 济南大学学报:自然科学版,2020,34(3):300-305.
	Wang Xu, Chen Nai-jian, Wang Chao, et al. Structure design of rope-driven mechanical arm for elderly and disabled wheel chair[J]. Journal of University of Jinan (Natural Science Edition),2020,34(3):300-305.
2	Mahdi H, Chavoshian C, Mostafa J,et al. Recurrent neuro-fuzzy model of pneumatic artificial muscle position[J]. Journal of Mechanical Science and Technology,2020,34(1):499-508.
3	朱嘉齐,章家岩,冯旭刚. 柔性臂测量机的圆光栅偏心参数标定算法[J]. 电子测量与仪器学报,2019,33(8):1-7.
	Zhu Jia-qi, Zhang Jia-yan, Feng Xu-gang. Calibration algorithm of circular grating eccentric parameters for flexible arm measuring machine[J]. Journal of Electrical Measurement and Instrumentation,2019,33(8):1-7.
4	Montazeri A, West C, Monk S D,et al. Dynamic modelling and parameter estimation of a hydraulic robot manipulator using a multi-objective genetic algorithm[J]. International Journal of Control,2017,90(4):661-683.
5	蔡若凡. 一种新型的可变刚度柔性关节设计与控制研究[D]. 哈尔滨:哈尔滨工业大学机电工程学院,2017.
	Cai Ruo-fan. Design and control research of a novel flexible joint with variable stiffness[D]. Harbin:School of Mechanic Engineering, Harbin Institute of Technology,2017.
6	Sohn J W, Gang H G, Choi S B. An experimental study on torque characteristics of magnetorheological brake with modified magnetic core shape[J]. Advances in Mechanical Engineering, 2018, 10(1):1-8.
7	Groothuis S, Rusticelli G, Zucchelli A,et al. The variable stiffness actuator vsaUT-II:mechanical design,modeling,and identification[J]. IEEE/ASME Transactions on Mechatronics,2014,19(2):589-597.
8	张明, 房立金, 孙凤,等. 永磁变刚度柔性关节的力学分析与控制器设计[J]. 机械工程学报, 2019, 55(5):89-96.
	Zhang Ming, Fang Li-jin, Sun Feng,et al. Mechanical analysis and controller design of flexible joint with permanent magnet variable stiffness[J]. Journal of Mechanical Engineering,2019,55(5):89-96.
9	李满宏,马艳悦,张明路,等. 基于凸轮机构的变刚度仿生柔性关节设计与分析[J]. 仪器仪表学报,2019,40(2):216-225.
	Li Man-hong, Ma Yan-yue, Zhang Ming-lu,et al. Design and analysis of bionic flexible joint with variable stiffness based on cam mechanism[J]. Chinese Journal of Scientific Instrument,2019,40(2): 216-225.
10	蒋林,陈新元,赵慧,等. 基于液压转角伺服的液压关节研究[J]. 机电工程,2011,28(3):265-268.
	Jiang Lin, Chen Xin-yuan, Zhao Hui, et al. Research on hydraulic joint based on hydraulic angle servo[J]. Mechanical and Electrical Engineering,2011,28(3):265-268.
11	潘孝越,蒋林, 任利胜,等. 液压伺服柔顺关节的变刚度设计与研究[J]. 武汉科技大学学报,2020,43(4):290-296.
	Pan Xiao-yue, Jiang Lin, Ren Li-sheng, et al. Design and research on variable stiffness of hydraulic servo compliant joint[J]. Journal of Wuhan University of Science and Technology,2020,43(4):290-296.
12	恭飞,王雪婷,杜奕. 基于AMEsim的液压系统建模与仿真[J]. 软件,2020,41(1):42-45.
	Gong Fei, Wang Xue-ting, Du Yi. Modeling and simulation of hydraulic system based on AMESim [J]. Software, 2020,41(1) :42-45.
13	彭贺,马文星,王忠山,等. 丘陵山地拖拉机车身调平控制仿真分析与试验[J].吉林大学学报:工学版,2019,49(1):157-165.
	Peng He, Ma Wen-xing, Wang Zhong-shan,et al. Simulation analysis and experiment on leveling control of tractor body in hilly mountains[J]. Journal of Jilin University (Engineering and Technology Edition), 2019,49(1):157-165.
14	陈德刚,孙仁云,陈勇,等. 基于AMESim的天然气发动机电控调压器仿真研究[J]. 机床与液压,2012,40(11):109-112.
	Chen De-gang, Sun Ren-yun, Chen Yong,et al. Simulation research on electrically controlled voltage regulator of natural gas engine based on AMESim[J]. Machine Tool & Hydraulics,2012, 40(11):109-112.
15	Jiang Lin, Zhu Zhi-chao, Liu Hong-hai,et al. Analysis of dynamic characteristics of water hydraulic rotating angle self-servo robot joint actuator[J]. Journal of Intelligent & Robotic Systems,2018,92(2):279-291.
16	马铭泽,田拥胜,王涛,等. 基于AMESim的比例伺服流量阀建模与仿真[J]. 液压气动与密封,2017, 37(1):16-19.
	Ma Ming-ze, Tian Yong-sheng, Wang Tao,et al. Modeling and simulation of proportional servo flow valve based on AMESim[J]. Hydraulics Pneumatics & Seals,2017,37(1):16-19.
17	徐巨华. 油液体积弹性模量对电液伺服系统动态特性影响研究[D]. 杭州:浙江大学机械工程学院,2013.
	Xu Ju-hua. Study on the influence of oil volume elastic modulus on dynamic characteristics of electro-hydraulic servo system[D]. Hangzhou:School of Mechanic Engineering, Zhejiang University,2013.
18	周志鸿,闫建辉,刘连华. 间隙泄漏量的分析计算[J]. 凿岩机械气动工具,2002(4):14-17.
	Zhou Zhi-hong, Yan Jian-hui, Liu Lian-hua. Analysis and calculation of clearance leakage[J]. Rock Drilling Machinery and Pneumatic Tools,2002(4):14-17.
19	伍家驹,于阳,李园庭,等. 非对称T型滤波器设计的一种五维可视化算法[J]. 中国电机工程学报,2010,30(33):30-36.
	Wu Jia-ju, Yu Yang, Li Yuan-ting,et al. A five-dimensional visualization algorithm for design of asymmetric T-filter[J]. Proceedings of the CSEE,2010,30(33):30-36.
20	伍家驹,马若飞,王长坤,等. 实现五维数据可视化的一种方法[J]. 电力电子技术, 2011,45(12):90-92.
	Wu Jia-ju, Ma Ruo-fei, Wang Chang-kun, et al. A method to realize five-dimensional data visualization[J]. Power Electronics,2011,45(12):90-92.

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参数	参数值
滑阀凸肩直径/mm	40
阀芯直径/mm	25
摆动缸负载惯性矩/（kg·m²）	0.4
摆动缸粘滞摩擦因数/［N·m·（rev·min^-1）］	0.8
摆动缸两端死区体积/cm³	10
顺序阀弹簧力/MPa	7
节流孔直径/mm	6
旁通阀台肩直径/mm	8
旁通阀阀芯直径/mm	4
旁通阀质量/kg	0.010
旁通阀弹簧刚度/（N·mm^-1）	20
电机转速/（r·min^-1）	1500
泵的排量/（mL·r^-1）	100
溢流阀限制压力/MPa	15
转角增益值	1e^-5
外负载力矩/（N·m）	40

P_s/ MPa	V_t/ （10^-4m³）	q_x/ （10^-5m³·s^-1）	r_f/（10^-3m）	K_h/（Pa· m³·rad^-2）
10	1.26	0.07	0.45	470 80
10	1.26	0.47	0.55	464 60
10	1.26	0.87	0.65	459 30
10	1.26	1.27	0.75	454 50
10	1.36	0.07	0.45	436 10
10	1.36	0.47	0.55	430 50
10	1.36	0.87	0.65	425 50
10	1.36	1.27	0.75	421 10
10	1.46	0.07	0.45	406 30
10	1.46	0.47	0.55	401 00
10	1.46	0.87	0.65	396 40
10	1.46	1.27	0.75	392 20
10	1.56	0.07	0.45	380 20
10	1.56	0.47	0.55	375 30
10	1.56	0.87	0.65	371 00
10	1.56	1.27	0.75	367 10
12	1.26	0.47	0.65	463 80
12	1.36	0.07	0.75	426 50
12	1.46	1.27	0.45	405 70
12	1.56	0.87	0.55	377 30
14	1.26	0.87	0.75	461 30
14	1.36	1.27	0.65	430 40
14	1.46	0.07	0.55	407 40
14	1.56	0.47	0.45	384 10
16	1.26	1.27	0.55	470 60
16	1.36	0.87	0.45	441 10
16	1.46	0.47	0.75	400 50
16	1.56	0.07	0.65	379 10

	回归系数	置信区间
b₀	129 321.5	［123 515.7 135 127.3］
b₁	128.0	［-56.3 312.3］
b₂	-0.6	［-7.7 6.4］
b₃	-92 625.0	［-100 604.1 -846 45.9］
b₄	22 250.0	［19 422.0 25 078.0］
b₅	-341.1	［-586.2 -96.0］
b₆	101.6	［-75.2 278.3］
b₇	-5 075.0	［-8 478.1 -1 672.0］
b₈	1 000.0	［-1 828.0 3 828.0］

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Design and stiffness continuously adjustable analysis of hydraulic servo flexible drive mechanism

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