Abstract
A robotic acoustic intensity measurement system (RAIMS) was designed and constructed to automate the analysis of sound fields using acoustic intensity techniques. Key system features include a five degree of freedom manipulator arm, a six element acoustic intensity transducer, a digital control unit for the manipulator, dedicated spectrum analysis and desk top calculator. The manipulator arm was designed for a 45‐in. maximum vertical and horizontal reach. The acoustic intensity probe is attached to the robot's wrist. Scanning velocity profiles for the intensity transducer are programmable with a maximum velocity of 5 in./s and absolute position information. In addition, the manipulator/acoustic intensity transducer unit weights less than 100 lb. The acoustic intensity probe designed for this system helps minimize errors in calculating acoustic intensity by using three pairs of microphones. Preliminary results using this system and future applications will be discussed.
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