Patent ID: 9440112
Filing Date: 2016-09-13
CPC Classification: A63B

Claim Text:
1. A bat selection device, comprising: a parameter input unit configured to receive an input of a swing parameter value relevant to swing of a batter, for each of at least two or more bats having moments of inertia and total lengths different from one another swung by said batter at an object, of a plurality of bats; an estimation unit configured to estimate said swing parameter value corresponding to each of said plurality of bats based on each said swing parameter value received by said parameter input unit; a selection unit configured to calculate an index parameter value indicative of an index for selecting a bat suitable for said batter who has swung the bats from said plurality of bats, for each of said plurality of bats, based on said estimated swing parameter value corresponding to the bat, and select the bat suitable for said batter from said plurality of bats based on said calculated index parameter values; wherein said swing parameter value includes a hitting position for hitting said object on the bat, and a swing speed at said hitting position immediately before said object is hit by the bat; wherein said estimation unit is configured to convert, for each of said at least two or more bats which have been swung, said swing speed into an angular velocity about a grip end portion of the bat, obtain a relational expression between the moment of inertia and said angular velocity, and estimate the swing speed corresponding to each of said plurality of bats based on said obtained relational expression and moments of inertia of said plurality of bats; and wherein said selection unit is configured to calculate, for each of said plurality of bats, a speed of said object hit by the bat immediately after hitting, based on said hitting position and said swing speed corresponding to the bat, and select a bat having the maximum calculated speed as the bat suitable for said batter, from said plurality of bats.