Microelectronic Isolation System Vibration Compensation
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Solution Overview
Problem
Miniaturized sensors, particularly MEMS inertial sensors and timing systems, experience significant performance degradation due to vibrations and shocks, as existing isolation systems fail to effectively mitigate resonant frequency excitations and alignment errors caused by mechanical deformations during events like launch and maneuver.
Innovation Solution
A microelectronic isolation system comprising a base, a vibration isolator with an isolation material and sensors, and a microprocessor that measures displacement and calculates a restored primary sensor response to compensate for vibrational frequencies, ensuring accurate digital output by canceling out erroneous measurements from vibrations and shocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastomer or spring-based isolators are used to protect sensors from vibrational frequency, then high-frequency vibration attenuation is improved, but misalignments occur during acceleration events due to isolator deformation
Solution Approach 1:
The patent employs feedback by using isolation sensors to continuously monitor platform displacement caused by isolator deformation. This displacement data is fed to a microprocessor that calculates compensation values and applies them to correct sensor readings in real-time, thereby eliminating alignment errors while preserving the vibration attenuation benefit
Solution Approach 2:
The patent replaces reliance on purely mechanical isolation with an electronic compensation system. Instead of depending solely on the mechanical properties of elastomer isolators, the system uses electronic sensors and digital signal processing to detect and correct for mechanical deformations, substituting mechanical precision requirements with electronic measurement and correction
2Reliability
If isolation material is used to dampen vibrational frequencies, then resonant frequency excitation is reduced, but system complexity increases due to additional sensors and processing
Solution Approach 1:
The patent applies multi-functionality by using the same isolation material to serve both as a vibration dampening element and as a reference for measuring platform displacement. The isolation sensors mounted on the isolator structure allow the system to simultaneously attenuate vibrations and measure the resulting deformations for compensation purposes
Solution Approach 2:
The system implements self-service by using its own isolation components as the measurement reference. The isolation sensors measure displacement relative to the base through the isolation material itself, allowing the system to self-diagnose and self-correct for vibration-induced errors without requiring external reference systems
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 performance degradation by dampening vibrational frequencies and detecting misalignments, allowing the sensors to operate accurately even during shock events that would typically excite resonant frequencies, thereby maintaining system stability and accuracy.
Implementation Method 1
The isolation material supports the platform from the base and dampens vibrational frequencies experienced by the base
Data Source
AI summary
The present disclosure provides a microelectronic isolation system comprising a base, vibration isolator, primary sensor, and microprocessor. The base supports the vibration isolator, the primary sensor, and the microprocessor. The vibration isolator has a platform, isolation material, and at least one isolation sensor. The isolation material dampens an overall vibrational frequency experienced by the microelectronic isolation system. The isolation sensor measures a displacement. The displacement is a measurement of a displacement of the platform with respect to the base. The primary sensor measures a primary sensor response, which is received by the microprocessor to calculate a plurality of responses. The plurality of responses of the microprocessor being one or a combination of a measured compensation response, an inertial response, and a restored primary sensor response.