Motorized Device Sympathetic Resonance Noise Mitigation
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Solution Overview
Problem
Motorized devices, such as vehicles, generate noise through sympathetic resonance, where vibrations from the devices cause nearby structures to resonate, leading to increased noise levels and potential structural damage.
Innovation Solution
A system that uses resonance sensors to detect vibrations in nearby structures and adjusts the operational parameters of the motorized device, such as switching to electric motors or altering engine RPMs, to mitigate the resonance-triggering frequencies and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motorized device operates at high power output, then productivity is improved, but noise generated by sympathetic resonance increases
Solution Approach 1:
The system dynamically adjusts operational parameters such as engine RPM in real-time based on detected resonance conditions. The controller continuously monitors vibration sensors and modifies engine operation to avoid resonant frequencies, enabling the system to maintain high productivity when safe while reducing noise when resonance is detected.
Solution Approach 2:
The invention changes operational parameters (engine speed, power output) to avoid resonance frequencies. By adjusting these parameters dynamically, the system can operate at high power levels when they do not coincide with resonant frequencies of nearby structures, thereby maintaining productivity while minimizing noise generation from sympathetic resonance.
2Object-generated harmful factors
If the operational parameters are adjusted to avoid resonance frequencies, then noise is reduced, but productivity may decrease
Solution Approach 1:
The system employs continuous feedback from vibration sensors to the controller, which adjusts operational parameters in real-time. This closed-loop control enables the system to maintain high productivity by operating at high power levels when resonance is not detected, while automatically reducing noise-generating operations only when and where resonance frequencies are actually present, rather than applying blanket restrictions.
Solution Approach 2:
The dynamic adjustment of operational parameters allows the system to optimize between productivity and noise reduction on a moment-by-moment basis. Rather than operating conservatively at all times, the system can exploit opportunities to run at high power output when environmental conditions permit, thereby minimizing the impact on overall productivity while still achieving noise reduction when needed.
3Object-generated harmful factors
If resonance sensors and control systems are added, then noise mitigation is improved, but device complexity increases
Solution Approach 1:
The system is self-regulating, using its own sensors to detect resonance conditions and automatically adjusting its operational parameters through the controller. This self-service capability eliminates the need for external monitoring and manual intervention, making the noise mitigation system relatively simple to implement and maintain despite the added sensors and control electronics.
Solution Approach 2:
The control system serves multiple functions: it manages normal engine operation, monitors for resonance conditions, and adjusts parameters to prevent both resonance-induced noise and potential structural damage. By combining these functions into a single integrated controller, the system achieves comprehensive noise mitigation without proportionally increasing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively reduces noise pollution and minimizes structural damage by dynamically adjusting the device's operation to avoid resonance frequencies, enhancing both environmental and operational efficiency.
Implementation Method 1
detect vibration caused by sympathetic resonance in a structure that is physically proximate to the machine
Implementation Method 2
adjust the machine component in order to mitigate the vibration
Data Source
AI summary
A method, system, and/or computer program product mitigate vibration caused by sympathetic resonance in a structure that is physically proximate to a machine. One or more processors, based on readings from a resonance sensor, detect vibration caused by sympathetic resonance in a structure that is physically proximate to the machine. One or more processors then direct a machine component controller to adjust the machine component in order to mitigate the vibration.