IMPACT POINT ESTIMATION APPARATUS
First Claim
1. An impact point estimation apparatus for estimating an impact point on a face surface of a head when a golf club having a grip, a shaft and the head is swung and hits a golf ball, comprising:
- an acquisition unit configured to acquire time series sensor data that is output from at least one of an angular velocity sensor and an acceleration sensor that is attached to at least one of the grip and the shaft;
a calculation unit configured to calculate a characteristic value of an initial stress wave that occurs due to impact, based on the sensor data acquired in an analysis period including an initial period after impact; and
an estimation unit configured to estimate the impact point on the face surface, according to the characteristic value,wherein the analysis period is before a predetermined short time period has elapsed from impact.
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Accused Products
Abstract
Provided is an impact point estimation apparatus for estimating an impact point on a face surface of a head when a golf club having a grip, a shaft and the head is swung and hits a golf ball. The apparatus has an acquisition unit, a calculation unit, and an estimation unit. The acquisition unit is configured to acquire time series sensor data that is output from at least one of an angular velocity sensor and an acceleration sensor that is attached to at least one of the grip and the shaft. The calculation unit is configured to calculate a characteristic value of an initial stress wave that occurs due to impact from the sensor data acquired in an analysis period including an initial period after impact. The estimation unit is configured to estimate the impact point on the face surface, according to the characteristic value. The analysis period is before a predetermined short time period has elapsed from impact.
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Citations
20 Claims
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1. An impact point estimation apparatus for estimating an impact point on a face surface of a head when a golf club having a grip, a shaft and the head is swung and hits a golf ball, comprising:
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an acquisition unit configured to acquire time series sensor data that is output from at least one of an angular velocity sensor and an acceleration sensor that is attached to at least one of the grip and the shaft; a calculation unit configured to calculate a characteristic value of an initial stress wave that occurs due to impact, based on the sensor data acquired in an analysis period including an initial period after impact; and an estimation unit configured to estimate the impact point on the face surface, according to the characteristic value, wherein the analysis period is before a predetermined short time period has elapsed from impact. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A non-transitory computer readable medium storing an impact point estimation program for estimating an impact point on a face surface of a head when a golf club having a grip, a shaft and the head is swung and hits a golf ball, the program causing a computer to execute the steps of:
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acquiring time series sensor data that is output from at least one of an angular velocity sensor and an acceleration sensor that is attached to at least one of the grip and the shaft; calculating a characteristic value of an initial stress wave that occurs due to impact, based on the sensor data acquired in an analysis period including an initial period after impact; and estimating the impact point on the face surface, according to the characteristic value, wherein the analysis period is before 0.01 seconds have elapsed from impact.
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19. An impact point estimation apparatus for estimating an impact point on a face surface of a head when a golf club having a grip, a shaft and the head is swung and hits a golf ball, comprising:
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an acquisition unit configured to acquire time series sensor data that is output from at least one of an angular velocity sensor and an acceleration sensor that is attached to at least one of the grip and the shaft; a calculation unit configured to calculate at least one characteristic value of a first wave to a third wave of a stress wave that occurs due to impact, based on the sensor data acquired in an analysis period including an initial period after impact; and an estimation unit configured to estimate the impact point on the face surface, according to the characteristic value. - View Dependent Claims (20)
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Specification