A comparative study of a bioinspired flapping bat robot and Bornean bats

Abstract

Effectively characterizing the significance of bioinspired design for the advancement of robotics technology is a complex endeavor. Here, a direct comparative analysis was conducted to examine the differences between a bioinspired bat robot and bats. The unique maneuvering and biosonar capabilities of bats have long been recognized as a source of technical inspiration. However, the capabilities of bats in these areas still far exceed those of current robotics models. To evaluate these differences, we have been preparing to fly rhinolophid/hipposiderid bats and a bat-robot prototype through a flight tunnel instrumented with arrays of 50 high-speed cameras and 32 ultrasonic microphones. Using this approach, kinematic and acoustic data can be compiled to enable a thorough comparison of the bats and the robot. This data can support a quantitative analysis of key characteristics such as wing cycle, size ratios, lift and thrust capacity, as well as maximum carrying capacity. Based on insight from this data, strategic design iterations can be carried out to more accurately mimic bat flight with considerations for incorporation of biosonar-inpsired technology into the design. By continuing this process, an in-depth understanding of the bioinspired design approach, implementation, and impact to the design process can be achieved.