共查询到20条相似文献,搜索用时 75 毫秒
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为了研究海洋环境下水下机械手智能控制相关技术,在分析了水下机械手工作环境及作业性能的基础上,研制了三自由度无人无缆自主式水下机器人用机械手实验样机.在分析了关节关键器件的基础上,进行了水下机械手驱动方式的设计,最后进行了水密性实验.水下水密性实验结果证明了水下机械手本体结构设计的有效性和可行性,水下机械手本体结构的设计为研究水下机械手智能控制相关技术搭建了实验平台. 相似文献
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搭载在工作级遥控潜水器上的液压机械手在深海作业中应用广泛。在几千米的深海中,深海液压机械手需承受几十兆帕的高压,由此带来的密封问题限制了深海液压机械手的构型和各关节驱动器的结构。为寻求最优的深海液压机械手连杆参数配置,结合深海液压机械手的特点提出全局工作空间下的灵活度和可操作度性能指标,并对其计算方法进行改进,改善了蒙特卡洛法造成的点集局部密集或稀疏的情况;利用遗传算法对深海液压机械手的连杆参数进行优化,得到了基于全局工作空间下的灵活度和可操作度性能指标的最佳连杆参数配置。通过深海液压机械手的运动仿真分析表明:经过优化后的深海液压机械手的部分位姿出现局部性能指标下降,但其关节运动速度波动情况得到改善,整体性能得到提升,验证了优化方法的可行性。 相似文献
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一种气动机械手夹持机构的设计 总被引:1,自引:0,他引:1
气动机械手的夹持机构要完成相对物料的夹紧、松开,伸出、缩回等运动,需要两个气缸组合完成,本文通过机构的改进设计,利用一个气缸完成机械手的夹持运动。对改进通用机械手的夹持机构有一定的借鉴作用。 相似文献
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Hard disk drives continue to increase in areal data density. This requires air bearing sliders with lower and lower flying heights (FH). Also the uniformity of the FH and the flatness of the roll profile with radius become more critical as the FH gets lower. By using modern optimization techniques, it is possible to optimize slider air bearing surface (ABS) designs according to multiple design goals. In this paper, we discuss two modifications to the DIRECT algorithm: one to handle tolerance and one to deal with hidden constraints. Some numerical experiments were carried out using these modifications and the modified DIRECT algorithm was applied to slider ABS optimization. The results show that these two modifications can improve the efficiency of the DIRECT algorithm and they also provide more flexibility in slider ABS optimization. 相似文献
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Whang Cho 《Journal of Mechanical Science and Technology》1994,8(1):6-18
An approach to kinematics and dynamics based on kinematic influence coefficient matrices is proposed for applications to the
analysis and control of motion controlled multibody systems, e.g., hybrid robotic manipulator systems. The scheme is unique
in a sense that all the kinematic constraints are completely embedded into the formulations at the kinematics level and equation
of motion of the system is obtained in a closed form with respect to the minimal set of independent joint coordinates. Furthermore,
all kinematic and dynamic formulations are expressed compactly in the same format by using two special algebraic operators.
This isomorphic formalism allows systematic transformations of kinematic and dynamic informations between different sets of
coordinates in a purely algebraic way. 相似文献
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