Active Anti-Vibration Suspension Beater Control
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Solution Overview
Problem
Existing aircraft vibration suspension systems are ineffective in minimizing vibrations across various flight configurations and frequencies, often requiring complex adjustments and heavy, costly actuators, while passive systems lack adaptability and active systems are limited in their vibration control.
Innovation Solution
An active anti-vibration suspension device with a beater performing pendulum movements, equipped with a force generator and a computer system that actively adjusts the amplitude and phase of the beater's movement based on real-time vibration measurements, allowing for optimal vibration minimization regardless of flight conditions or loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a passive suspension system with swinging masses is used, then the system structure is simple, but the vibration reduction effectiveness is insufficient across various flight configurations and frequencies
Solution Approach 1:
The patent transforms the static passive suspension system into a dynamic active suspension system by introducing controllable actuators that can adjust the position of swinging masses in real-time. The computer-controlled actuators modify the suspension characteristics dynamically to adapt to different flight configurations and frequency ranges, resolving the contradiction between structural simplicity and vibration reduction effectiveness.
Solution Approach 2:
The patent changes the physical parameters of the suspension system by actively adjusting the position of swinging masses through actuators. This allows modification of the suspension stiffness and damping characteristics to optimize vibration reduction for different flight conditions, thereby improving reliability without excessive complexity.
2Reliability
If an active vibration control system with actuators is implemented, then the vibration control effectiveness is improved, but the system mass and cost increase
Solution Approach 1:
The patent applies partial action by implementing active control only where most needed - through strategically positioned actuators that adjust swinging masses rather than controlling the entire suspension system. This selective approach achieves effective vibration control while minimizing the addition of heavy actuators, thus reducing overall system mass compared to full active control systems.
3Ease of operation
If the swinging masses are fixed in position, then the system is simple to operate, but the adjustment is not optimal over the entire flight spectrum
Solution Approach 1:
The patent implements feedback control where a computer receives data about flight conditions and automatically adjusts actuator positions to optimize vibration reduction. This closed-loop system maintains ease of operation through automation while achieving optimal adjustment across the entire flight spectrum, resolving the contradiction between operational simplicity and adaptability.
Solution Approach 2:
The active suspension system performs self-adjustment through computer-controlled actuators that automatically reposition swinging masses based on detected flight conditions. This self-service capability eliminates the need for manual adjustment while maintaining operational simplicity, allowing the system to adapt optimally across different flight configurations without user intervention.
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
The system effectively reduces vibrations across a wide frequency band, minimizing discomfort for occupants and equipment, with a lightweight and cost-effective design that adapts to changing flight dynamics, unlike traditional passive systems.
Implementation Method 1
at least one suspension means 20, the suspension means comprising a beater 21 performing a pendulum movement
Implementation Method 2
The suspension device comprises at least one force generator acting on the amplitude and the phase of the balance movement of the beater
Implementation Method 3
Thus, the suspension device comprises one elastic element per beater to provide stiffness between the mechanical assembly and the supporting structure
Data Source
AI summary
The present invention relates to a suspension device (10) comprising at least one suspension means (20) including a beater (21) performing a rocking motion, the beater (21) being provided with a mass support (25) supporting at least one striking mass (30). The mass support (25) is articulated to a load-bearing structure (2) to be isolated and to a retaining bar (15) of a mechanical assembly. The suspension device (10) includes at least one force generator (70), said suspension device (10) having at least one computer (50) connected to a measurement system (55) measuring vibration levels and to said force generator (70) for actively adjusting the amplitude and phase of the rocking motion by controlling the force generator (70) according to at least one measurement signal from said measurement system (55).