Internal Load Calculation via Acceleration and Skew Matrix
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Solution Overview
Problem
Current methods for calculating internal loads of components, such as the Block Force approach, face challenges like difficulty in measuring forces, inability to derive internal loads for component isolation design optimization, and assumptions about invariant interface conditions, especially when components are sourced from third-party suppliers with unknown internal loads.
Innovation Solution
A system and method that utilize acceleration measurements, skew matrices, center of gravity calculations, mass/inertia matrices, and internal load modules to determine internal loads at the center of gravity of components, allowing for optimization of attachment systems and internal force requirements based on calculated loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the Block Force approach is used to measure internal load, then force measurement is attempted, but difficulty in measuring forces arises due to requirement of force transducer
Solution Approach 1:
The patent replaces the mechanical force transducer system with an accelerometer-based measurement system. Instead of directly measuring forces through mechanical transducers, the system uses accelerometers to measure acceleration, which is then converted to force information through mathematical calculations involving mass and inertia properties. This substitution eliminates the need for complex force transducer installations while achieving the same measurement objective.
Solution Approach 2:
The patent introduces acceleration measurements as an intermediary quantity to indirectly obtain force information. Rather than directly measuring the internal load force, the system measures acceleration at multiple points and uses these intermediate measurements, combined with mass and inertia data, to calculate the internal load. This intermediary approach simplifies the measurement process while maintaining accuracy.
2Measurement precision
If the Block Force approach is used, then internal load measurement is attempted, but inability to derive internal load for component isolation design optimization occurs
Solution Approach 1:
The patent segments the measurement process into distinct components: acceleration measurements at multiple discrete points, separate mass/inertia matrix determination, and individual internal load calculations for each component. This segmentation allows the internal load to be derived specifically for isolated components rather than treating the entire assembly as a single unit, enabling component-level optimization for isolation design.
Solution Approach 2:
The patent moves from a single-point force measurement approach to a multi-dimensional measurement system using accelerometers positioned at multiple points in three-dimensional space. By measuring acceleration at multiple locations and incorporating mass and inertia matrices, the system captures the complete dynamic behavior of the component, providing comprehensive information needed for isolation design optimization across all spatial dimensions.
3Measurement precision
If the Block Force approach is used, then force measurement is attempted, but assumption that Block Force measured will be invariant due to interface condition change occurs
Solution Approach 1:
The patent adopts a dynamic measurement approach using accelerometers that capture real-time acceleration data during component operation. Unlike static force transducer measurements that assume invariant conditions, the accelerometer-based system continuously measures dynamic responses, automatically adapting to changing interface conditions. The mass and inertia matrices are determined once but applied to various operational scenarios, providing reliable internal load calculations regardless of interface condition changes.
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
Enables accurate calculation of internal loads in components, facilitating optimal design and performance by providing precise data for attachment system configuration and operational force management, overcoming limitations of existing methods.
Implementation Method 1
an acceleration module configured to obtain a plurality of acceleration measurements associated with a component
Implementation Method 2
a center of gravity response module configured to calculate a center of gravity response for the component based on the plurality of acceleration measurements and the skew matrix
Implementation Method 3
a mass/inertia module configured to determine a mass/inertia matrix based on one or more measured mass values associated with the component and one or more measured inertia values associated with the component
Data Source
AI summary
A system for calculating an internal load of a component includes an acceleration module, a skew matrix module, a center of gravity calculation module, a mass/inertia module, and an internal load module. The acceleration module may obtain a plurality of acceleration measurements associated with a component, where each acceleration measurement is associated with a response point relative to a center of gravity of the component. The skew matrix module may determine a skew matrix based on the response points. The center of gravity calculation module may calculate a center of gravity response for the component based on the plurality of acceleration measurements and the skew matrix. The mass/inertia module may determine a mass/inertia matrix based on measured mass and inertia values associated with the component. The internal load module may calculate an internal load of the component based on the calculated center of gravity response and the mass/inertia matrix.