Oscillator Vibration Compensation with Lookup-Table Correction
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Solution Overview
Problem
Existing vibration correction methods for communication and radar equipment are inadequate, particularly at higher vibration frequencies, as they fail to provide exact correction and are limited by cost and size in passive approaches, and by the ability to handle modulation and g-sensitivity frequency response in active approaches.
Innovation Solution
A method that senses vibrations using accelerometers, determines corrective factors through a look-up table, and controls the oscillator based on these factors to mitigate the effects of vibrations, enhancing active compensation theory and providing exact correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive vibration correction approaches are used, then device complexity is reduced, but manufacturing precision and correction accuracy deteriorate
Solution Approach 1:
The patent replaces passive mechanical vibration isolation systems with an active electronic compensation system. Accelerometers sense vibrations and generate correction signals that are electronically applied to the oscillator, substituting mechanical damping with electronic signal processing to achieve higher precision correction.
Solution Approach 2:
The patent implements a feedback mechanism where accelerometers continuously monitor vibrations and feed this information to correction circuitry that adjusts oscillator parameters in real-time. This closed-loop feedback system enables dynamic compensation that adapts to varying vibration conditions, achieving high manufacturing precision.
2Manufacturing precision
If active vibration correction approaches are used, then phase and amplitude correction accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces accelerometers as intermediary sensing devices that measure vibrations and convert them into electrical signals. These intermediary sensors bridge the physical vibration environment and the electronic correction system, enabling accurate measurement without directly complicating the oscillator structure.
Solution Approach 2:
The patent changes operational parameters of the oscillator based on sensed vibrations, adjusting frequency and phase parameters dynamically. By modifying oscillator parameters in response to vibration conditions, the system achieves high correction accuracy without requiring complete system redesign.
3Reliability
If existing vibration correction methods are used, then basic vibration mitigation is achieved, but correction accuracy at higher vibration frequencies deteriorates
Solution Approach 1:
The patent implements a dynamic correction system that adapts to varying vibration frequencies and amplitudes. The correction circuitry continuously adjusts its response based on real-time accelerometer measurements, enabling effective compensation across a wide frequency range including high frequencies where static correction methods fail.
Solution Approach 2:
The patent applies preliminary correction by anticipating vibration effects through accelerometer sensing and pre-adjusting oscillator parameters before significant phase and amplitude errors develop. This proactive correction approach maintains accuracy at high frequencies by preventing error accumulation.
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
This approach effectively reduces phase and amplitude errors, improving spectral purity and stability of RF signals, enhancing the performance of communication systems under vibrating conditions by accurately compensating for vibration-induced noise.
Implementation Method 1
senses vibrations along one or more axes via at least one accelerometer mounted on the oscillator
Data Source
AI summary
A method and system for vibration correction in an oscillator. The method includes sensing vibrations along one or more axes via at least one accelerometer mounted on the oscillator, determining corrective factors based on an acceleration signal received from the at least one accelerometer by referencing a look-up table; and controlling the oscillator based on at least the corrective factors.