常量(计算机编程)
顺应机制
足迹
计算机科学
控制理论(社会学)
结构工程
工程类
控制(管理)
古生物学
有限元法
人工智能
生物
程序设计语言
作者
Tanzeel Ur Rehman,Jing Li,Zeeshan Qaiser,Shane Johnson
出处
期刊:Journal of Mechanical Design
日期:2023-12-22
卷期号:146 (7)
被引量:2
摘要
Abstract Semi-active adjustable constant force mechanisms (ACFMs) are an emerging alternative in applications where energy-efficient control of constant force environments is required. However, there is a lack of design strategies in the literature for semi-active ACFMs. This study addresses this gap by presenting a design strategy for ACFMs that semi-actively tunes the constant force by structural control. A design framework is presented, which consists of an optimization of a high slenderness large stroke constant force mechanism (CFM) followed by a parametric study on adjusting constant force through slenderness reduction by repositioning the boundary condition location. The design framework was able to change constant force ranging from two to four times with a stroke of 11–26% of the mechanism footprint. A selected design with a larger force magnitude was fabricated and experimentally tested, demonstrating a change in constant force of 2.01 times, which is comparable to that of active control designs and improved compactness, i.e., stroke of 11% of the footprint of the mechanism. In conclusion, the proposed ACFM design framework maximizes the initial CFM stroke and achieves constant force tuning by changing beam slenderness, resulting in compact and efficient ACFM designs.
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