Universal Active Noise Patch Cancellation

To address the SOCOM need for an active noise cancellation system for thrust motor controllers, Physical Optics Corporation (POC) proposes to develop a new Universal Active Noise Patch Cancellation (UANPAC) system based on a multifold active reduction patch (MARP) as a smart-skin-type acoustic actuator and an adaptive time-varying controller (ATVC) as a real-time adaptive ANC controller. The UANPAC system provides an open, universal control architecture enabling easy add-on to any type of motor controller without modification. The ATVC will be based on POC’s proprietary ANC algorithms, whereas MARP will be newly developed for the UANPAC application as a flat, skin-like, stick-on actuator or a flat (or curved) plate with attached MARPs. Responding to motor controller noise, the ATVC will suppress broadband noise with the MARP actuator, reproducing antinoise through the housing surface of a motor controller. In Phase I, POC will develop and demonstrate a Phase I UANPAC prototype and a business plan for its commercialization. In Phase II, we plan to develop a functional UANPAC prototype and conduct testing in a laboratory environment to validate the accuracy, efficiency, and reliability of the prototype system while operating in a simulated environment at varying loads. BENEFITS: As an effective means of controlling structural/acoustic noise, the UANPAC system will have myriad civilian applications, including vibration suppression, noise minimization, and vibration cancellation in marine motors and engines, including quieting motors for use in auditoriums, theatres, and opera houses, or ambient noise cancellation in commercial or residential buildings.