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• W2091214802 abstract "In this article, a description of the kinetic energy partition values (KEPVs) of serial chain mechanisms, as well as their rates of change, is presented. The KEPVs arise from the partitioning of the mechanism’s kinetic energy and correspond to the critical values of the kinetic energy ratios of the actuators and links and are indicators of the kinetic energy distribution within the system while the rates of change in the KEPVs indicate the sensitivity to change in the location of that kinetic energy. A high value for the KEPV rate of change together with a high operational state implies that the amount of kinetic energy flowing in the system is large, further implying a loss of precision in the system due to large inertial torques being generated. The KEPVs and their rates can be used to identify the actuators whose parameters (mass, inertia, and mechanical gain) greatly affect the overall distribution of kinetic energy within the system, thereby allowing the designer to optimize these actuators to improve the performance of the overall mechanism. Two design criteria, one based on the KEPVs and another based on their rates of change, are developed. A two degree-of-freedom (DOF) planar mechanism is used to demonstrate the concepts and to verify the properties of the KEPVs and their rates. Also, a 6DOF spatial manipulator is used to illustrate the solution of a multicriteria design optimization problem where two conflicting criteria are considered: a KEPV criterion and an effective mass criterion. The goal of the design problem is to demonstrate how the inertial parameters of the actuators and the mechanical gains of the actuator transmissions alter the kinetic energy of the system both in terms of its magnitude, which is “measured” via the effective mass criterion, and its distribution, which is measured via the KEPV criterion. It is demonstrated that the mechanical gains in the actuators significantly influence the magnitude of the kinetic energy as well as its distribution within the system due to the inertial amplification. The KEPVs and their rates of change provide a novel new approach to analyzing the dynamic character of serial chain mechanisms." @default.
• W2091214802 created "2016-06-24" @default.
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• W2091214802 date "2009-07-09" @default.
• W2091214802 modified "2023-10-18" @default.
• W2091214802 title "Design Criteria for Serial Chain Mechanisms Based on Kinetic Energy Ratios" @default.
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• W2091214802 doi "https://doi.org/10.1115/1.3149846" @default.
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