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輪式并聯(lián)調(diào)姿機器人冗余控制策略研究
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國家自然科學基金項目(U2037202、52075466)


Investigation on Wheeled Parallel Pose-tuning Robot Redundant Control Strategy
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    摘要:

    針對大型精密復雜零部件的集成裝配,提出一種將全域全向運動與調(diào)姿微運動融合于一體的輪式并聯(lián)調(diào)姿機器人。通過共享部分自由度方式將全向運動特征融合于并聯(lián)機構(gòu),解決大范圍任意方向移動與小空間內(nèi)精密調(diào)姿高效連續(xù)操作的問題;針對輪式并聯(lián)調(diào)姿裝備的定平臺開放特性與冗余特征,設(shè)計基于力位混合的單分支與整體冗余控制策略,選取并優(yōu)化輪式并聯(lián)調(diào)姿機構(gòu)的主動輸入方式,基于螺旋理論對位置控制軸的選取合理性進行分析,評估2種控制方式在不同的末端姿態(tài)域內(nèi)的性能,得到設(shè)備在不同目標姿態(tài)時力位混合控制主動輸入選取策略。基于ADAMS與Simulink軟件搭建環(huán)境一致性良好,可控制較強的機電一體化模型,驗證輪式并聯(lián)調(diào)姿裝備采用力位混合控制策略可行性與設(shè)備調(diào)姿精度。工程樣機實驗結(jié)果驗證了所提出的冗余控制策略能夠?qū)崿F(xiàn)輪式并聯(lián)調(diào)姿機器人功能,保證了調(diào)姿精度,為開發(fā)具有高可靠性、大尺度、重載荷、高精度同時兼具高精度全向運動和精密調(diào)姿功能的高效連續(xù)作業(yè)特征的6自由度并聯(lián)調(diào)姿、對位、裝配智能機器人奠定了理論與實踐基礎(chǔ)。

    Abstract:

    For the integrated assembly of large precision and complex parts, a wheeled parallel gesturing robot that integrated omnidirectional motion and gesturing micro-motion was proposed. The omnidirectional motion features were integrated into the parallel mechanism by sharing some degrees of freedom, which solved the problems of large range of arbitrary directional movement and efficient continuous operation of precision posture in small space. Based on the spiral theory, the reasonableness of the position control axis selection was analyzed, and the performance of the two control methods in different end attitude domains was evaluated to obtain the force-position hybrid control active input selection strategy for different target attitudes of the device. Based on ADAMS and Simulink software, a mechatronic model with good environmental consistency and strong control can be built to verify the feasibility and accuracy of wheeled parallel attitude adjustment equipment by using force-position hybrid control strategy. The experimental results of the engineering prototype verified that the proposed redundant control strategy can realize the functions of wheeled parallel posture robot and ensure the posture accuracy, and laid the theoretical and practical foundation for the development of a 6-degree of freedom parallel posture, alignment and assembly intelligent robot with high reliability, large scale, heavy load, high accuracy, and high precision omnidirectional motion and precision posture functions.

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劉毅,豐宗強,劉洋,常嘉琦,趙永生,姚建濤.輪式并聯(lián)調(diào)姿機器人冗余控制策略研究[J].農(nóng)業(yè)機械學報,2022,53(10):423-435. LIU Yi, FENG Zongqiang, LIU Yang, CHANG Jiaqi, ZHAO Yongsheng, YAO Jiantao. Investigation on Wheeled Parallel Pose-tuning Robot Redundant Control Strategy[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(10):423-435.

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  • 收稿日期:2022-05-31
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  • 在線發(fā)布日期: 2022-08-09
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