Vibration Testing Table Region Control for Uniformity
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Solution Overview
Problem
Existing vibration systems face challenges in achieving uniform vibration strength across a table due to uneven table loading, variance in individual vibrator efficiencies, and transfer inefficiencies, leading to disparities between desired and actual vibration levels.
Innovation Solution
A vibration testing system with distinct regions on the table, each equipped with a vibrator and an accelerometer, where local vibration strength is measured and used to calculate individual control signals for each region, allowing for independent control of vibrators to achieve target vibration strength uniformly across the table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single averaged control signal is used for all vibrators, then the control system is simple, but the vibration uniformity across the table deteriorates
Solution Approach 1:
The patent divides the table into multiple distinct regions, with each region having its own accelerometer and control signal. This segmentation allows independent control of vibration in each region, addressing the uniformity problem without requiring complete system redesign.
Solution Approach 2:
The patent implements region-specific control signals tailored to the actual vibration conditions in each local area. Each control signal is customized based on local accelerometer feedback, ensuring optimal vibration uniformity in each region rather than applying a uniform approach across the entire table.
2Manufacturing precision
If multiple accelerometers with individual control signals are used for each region, then vibration uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent uses a single controller that performs multiple functions: it generates region-specific control signals, processes feedback from multiple accelerometers, and coordinates all vibrators. This universal controller approach manages complexity centrally rather than distributing it across multiple independent control systems.
Solution Approach 2:
The patent implements a feedback loop where accelerometers in each region continuously monitor vibration levels and send signals back to the controller. The controller adjusts control signals in real-time based on this feedback, automatically maintaining vibration uniformity without requiring manual intervention or complex mechanical adjustments.
3Manufacturing precision
If complex mechanical structures are used to increase vibration uniformity, then vibration uniformity is improved, but the device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with an electronic control system. Instead of using mechanical structures to physically adjust vibration distribution, the system uses electronically generated control signals and electronic feedback from accelerometers to achieve uniform vibration, eliminating the need for complex mechanical modification 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
This approach ensures that products on the table experience substantially uniform vibration levels, addressing the limitations of existing systems by providing region-specific control signals to maintain consistent vibration strength despite variations in loading and vibrator efficiencies.
Implementation Method 1
Local vibration strength is measured at each of the plurality of distinct regions with the corresponding accelerometer of the plurality of accelerometers
Implementation Method 2
The plurality of vibrators is operated to induce repetitive shock on the table and the at least one product received by the table
Data Source
AI summary
In operating a vibration testing system, a table is provided with a plurality of distinct regions, and each of the plurality of distinct regions is provided with at least one vibrator of the plurality of vibrators and at least one accelerometer of the plurality of accelerometers. Target vibration strengths are set for each region, and the vibrators are operated. Local vibration strength is measured at each distinct region with the corresponding accelerometer(s) of the plurality of accelerometers. A signal corresponding to each of the measured local vibration strengths is provided to a controller. An individual vibrator control signal is calculated for each distinct region based on the corresponding measured local vibration strength and the corresponding target vibration strength. The individual control signals are provided from the controller to control the vibrator(s) of each distinct region to achieve the target vibration strength at each of the distinct table regions.