Golf Swing Torque Analysis via Inertial Sensor Coordination
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Solution Overview
Problem
Existing swing analysis devices for golf clubs primarily focus on club posture analysis without considering the force control aspect, which is crucial for understanding and improving swing motion quality.
Innovation Solution
A swing analysis method and device that utilize an inertial sensor and a head speed coordination system to calculate torque data indicating temporal changes in torque exerted on the golf club, allowing for the determination of swing feature values by analyzing forces around specific axes, including the X and Z axes, and calculating a torque ratio to assess force control and matching with an ideal swing plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If club posture analysis is used, then swing motion state can be determined accurately, but force control aspect is not considered
Solution Approach 1:
The patent combines club posture analysis with force control analysis by integrating inertial sensor data (acceleration, angular velocity) with club posture information. This merging allows simultaneous evaluation of both spatial position and force characteristics during the swing motion, resolving the contradiction between accurate motion state determination and force control information availability.
Solution Approach 2:
The patent introduces torque as an intermediary parameter that connects club posture and force control. By calculating torque around the swing axis based on inertial sensor measurements and club posture data, the system provides a quantitative measure of force control that bridges the gap between positional analysis and force analysis.
2Measurement precision
If comprehensive force control analysis is added, then swing quality assessment is improved, but analysis complexity increases
Solution Approach 1:
The patent extracts only the essential force control parameters needed for swing quality assessment, specifically torque around the swing axis and timing characteristics. By focusing on these key parameters rather than analyzing all possible force components, the system maintains high assessment accuracy while avoiding excessive complexity in the analysis system.
Solution Approach 2:
The patent transforms complex force control data into simplified evaluation parameters such as torque magnitude, torque timing, and torque integration values. These transformed parameters maintain the essential information for swing quality assessment while being more manageable and interpretable, thus reducing analysis complexity.
Data Source
AI summary
A swing analysis method includes acquiring measurement data measured by an inertial sensor in a swing motion with a golf club, and calculating torque data indicating a temporal change of a torque exerted on the golf club by analyzing the measurement data using a head speed coordination system having a first axis including a speed vector of a head of the golf club, a second axis being orthogonal to the first axis and extending along a shaft of the golf club, and a third axis orthogonal to both the first axis and the second axis.