scholarly journals Development of a biologically inspired MEMS microphone

Author(s):  
Y. Zhang ◽  
R. Bauer ◽  
W.M. Whitmer ◽  
W.O. Brimijoin ◽  
D. Uttamchandani ◽  
...  
Author(s):  
Asif Ishfaque ◽  
Byungki Kim

Biologically inspired unique perforated diaphragm architecture for acoustic source localization has been designed. The merely 500 μm separated structure of ears of fly Ormia ochracea which increases the interaural time and intensity differences of arriving sound has great ability to enhance the acoustic source localization. This remarkable capacity of fly to amplify direction cues for incoming sound along with squeeze film damping effects are the key inspirations for designing the diaphragm. In this design, we maintain a unique ratio between the number of holes and the diaphragm size and enhanced the acoustic directional sensitivity cues. A mechanical structure based on the ears of fly Ormia ochracea is modeled and the response is observed on different frequencies by considering the critical damping value and also on zero damping value. In one step further a perforated diaphragm is designed utilizing ANSYS software and is examined with fluid elements to estimate the damping value. A harmonic analysis is carried out in conjunction with estimated damping value 0.3325 and also on zero damping value. The figured results are very much similar to the modeled results and a range of 1 nm to 472 nm amplitude differences between two sides of the diaphragm is observed over the entire range of the frequency in damping case.


2012 ◽  
Author(s):  
Kenneth Breuer ◽  
Sharon Swartz ◽  
Jaime Peraire ◽  
Mark Drela ◽  
David Willis ◽  
...  

Author(s):  
Giorgio Metta

This chapter outlines a number of research lines that, starting from the observation of nature, attempt to mimic human behavior in humanoid robots. Humanoid robotics is one of the most exciting proving grounds for the development of biologically inspired hardware and software—machines that try to recreate billions of years of evolution with some of the abilities and characteristics of living beings. Humanoids could be especially useful for their ability to “live” in human-populated environments, occupying the same physical space as people and using tools that have been designed for people. Natural human–robot interaction is also an important facet of humanoid research. Finally, learning and adapting from experience, the hallmark of human intelligence, may require some approximation to the human body in order to attain similar capacities to humans. This chapter focuses particularly on compliant actuation, soft robotics, biomimetic robot vision, robot touch, and brain-inspired motor control in the context of the iCub humanoid robot.


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