Abstract
This study designed and developed a bionic mimosa robot with delicate leaf swing behaviors. For different swing behaviors, this study developed a variety of situations, in which the bionic mimosa robot would display different postures. The core technologies used were Shape Memory Alloys (SMAs), plastic material, and an intelligent control device. The technology particularly focused on the SMAs memory processing bend mode, directional guidance, and the position of SMAs installed inside the plastic material. Performance analysis and evaluation were conducted using two SMAs for mimosa opening/closing behaviors. Finally, by controlling the mimosa behavior with a micro-controller, the optimal strain swing behavior was realized through fuzzy logic control in order to display the different postures of mimosa under different situations. The proposed method is applicable to micro-bionic robot systems, entertainment robots, biomedical engineering, and architectural aesthetics-related fields in the future.
Highlights
The study field of mimicking the special skills of biological organisms is known as bionics
This study developed Shape Memory Alloys (SMAs) as the micro-actuation component for application in a mimosa vein
Using two SMAs for different actuation directions can directly result in two-way bending of leaves, and the three-dimensional design of the leaf is more consistent with the actual shape of the mimosa
Summary
The study field of mimicking the special skills of biological organisms is known as bionics. Micromachines 2015, 6 structures, principles, behaviors, the various functions of organs, in vivo physical and chemical processes, as well as the supply of energy, memory, and transmission. Based on these principles, bionics provides new design ideas and system principles for science and technology. The Mimosa (scientific name of Mimosa pudica L.) was the object to be mimicked and designed in this study It has a palmate compound leaf consisting of four pinnas. The moisture in the pedestal supports the pinna, and when the pinna is stimulated by an external force (such as touch or a bold wind), moisture in the pedestal will quickly flow elsewhere, and the pinnate compound leaf closes. The main function of such behavior is to protect itself and frighten away any approaching animal or insect
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