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Abstract：
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For the load simulation system with independent metering control, considering the problem that redundant force generated during the working process of the system leads to decreased load simulation accuracy, each component and overall mathematical model of the system were established by the mechanism modeling method, and the coupling relationship between the output displacement of main system and the output load force of load simulation system was analyzed. Then, based on the decoupling compensation principle, the compensation of the system redundant force was calculated. Furthermore, a test platform was built to carry out redundant force suppression control experiments, and the research was conducted mainly from two aspects, namely, the suppression effect of the redundant force under different frequency position fluctuations and the suppression effect of the redundant force under different load constant forces. The results show that the influence of the above position disturbance on the force control accuracy of the load simulation part is greatly weakened after the redundant force decoupling compensation control method is adopted for the load simulation system with independent metering control, and the peak value of redundant force is eliminated by more than 65%, which effectively improves the accuracy of load simulation.
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Funds：
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国家自然科学基金资助项目(51575471)
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AuthorIntro：
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作者简介：曹晓明 (1990-)，男，博士，助理研究员，E-mail：18713520404@126.com；通信作者：姚静 (1978-)，女，博士，教授，E-mail：jyao@ysu.edu.cn
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Reference：
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[1]Choi K, Seo J, Nam Y, et al. Energy-saving in excavators with application of independent metering valve[J]. Journal of Mechanical Science and Technology, 2015, 29(1): 387-395.
[2]丁孺琦, 徐兵, 张军辉. 负载口独立控制系统压力速度复合控制的耦合特性[J]. 浙江大学学报：工学版, 2017, 51(6): 1126-1134.
Ding R Q, Xu B, Zhang J H. Coupling property of pressure and velocity compound control in individual metering systems [J]. Journal of Zhejiang University：Engineering Science, 2017, 51(6): 1126-1134.
[3]Chen G, Wang J, Wang S, et al. Energy saving control in separate meter in and separate meter out control system[J]. Control Engineering Practice, 2018, 72(3):138-150.
[4]Zhong Q, Zhang B, Bao H M, et al. Analysis of pressure and flow compound control characteristics of an independent metering hydraulic system based on a two-level fuzzy controller[J]. Journal of Zhejiang University：Science A, 2019, 20(3):184-200.
[5]Qu F, Guo X Q, Yang B, et al. Theoretical analysis of surplus torque in electro-hydraulic load simulator[A]. 2011 International Conference on Fluid Power and Mechatronics [C]. Beijing, 2011.
[6]田巨. 被动式加载系统的发展与现状[J]. 液压与气动，2009, (8): 33-35.
Tian J. Recent development and status of passive loading system [J]. Chinese Hydraulics & Pneumatics，2009, (8)：33-35.
[7]李运华, 盛志清. 电液加载系统的多余力抑制方法[J].液压与气动, 2015, (8): 1-9.
Li Y H, Sheng Z Q. Methods for suppressing extraneous force in loading systems [J]. Chinese Hydraulics & Pneumatics, 2015, (8): 1-9.
[8]刘晓琳, 王春婷. 飞机舵机电液加载系统多余力抑制方法研究[J]. 系统仿真学报, 2017, 29(2): 409-417.
Liu X L, Wang C T. Research of strategy to restrain surplus force of aircraft rudder electro-hydraulic loading system[J]. Journal of System Simulation, 2017, 29(2): 409-417.
[9]张伟. 四足机器人液压驱动单元负载模拟系统多余力抑制研究[D]. 秦皇岛：燕山大学, 2013.
Zhang W. Study on Redundant Force Restraining for Load Simulation System of Quadruped Robots Hydraulic Drive Unit [D]. Qinhuangdao: Yanshan University, 2013.
[10]魏征. 基于遗传算法的0.6 MN快锻液压机多PID控制器参数优化研究[D]. 秦皇岛：燕山大学, 2015.
Wei Z. Multi-PID Controller Parameters Optimization of 0.6 MN Fast Forging Hydraulic Press Based on Genetic Algorithm Optimization[D]. Qinhuangdao: Yanshan University, 2015.
[11]赵劲松, 张阳, 曹晓明，等. 基于GA的液压机多PID控制器参数优化[J].中南大学学报: 自然科学版, 2016, 47(8): 2650-2660.
Zhao J S, Zhang Y, Cao X M, et al. Multi-PID controller parameters optimization of fast forging hydraulic press based on GA [J]. Journal of Central South University: Science and Technology, 2016, 47(8): 2650-2660.
[12]Yao J, Cao X M, Zhang Y, et al. Cross-coupled fuzzy pid control combined with full decoupling compensation method for double cylinder servo control system[J]. Journal of Mechanical Science and Technology, 2018, 32(5): 2261-2271.
[13]李雪冰. 全纤维曲轴锻造液压机同步控制研究[D]. 秦皇岛：燕山大学, 2016.
Li X B. Study on Synchronization Control for Full-fiber Crankshaft Upsetting-bending Hydraulic Press[D]. Qinhuangdao: Yanshan University, 2016.
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