METHOD FOR SIMULATING RUN

• US 20130226541A1
• Filed: 02/27/2013
• Published: 08/29/2013
• Est. Priority Date: 02/29/2012
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Dunlop Sports Co. Ltd. (Sumitomo Rubber Industries Limited)
• Inventors: KAMINO, Kazuya
• Granted Patent: US 9,460,242 B2
• Time in Patent Office: Days
• US Class Current: 703/2
• CPC Class Codes: A63B 2069/403 back or reverse spin
• CPC Class Codes: A63B 2220/20 Distances or displacements
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

This method simulates a run which is a distance between a landing point and a final arriving point using an initial condition of a hit ball and an actually measured falling condition. Preferably, the initial condition includes initial side spin. Preferably, the falling condition is a falling velocity. Preferably, a calculation formula of the run is a quadratic function having the initial condition and the falling condition as variables. Preferably, when the run is defined as Dr (yard); a target direction component of the falling velocity is defined as Vx (m/s); a vertical direction component of the falling velocity is defined as Vy (m/s); and the initial side spin is defined as S (rpm), the run is calculated according to the following formula (1):

Dr=C₁×Vx²−C₂×Vx+C₃Vy²+C₄×Vy−C₅×S+C₆  (1)

Claims

1. A method for simulating a run which is a distance between a landing point and a final arriving point using an initial condition of a hit ball and an actually measured falling condition.

2. The method according to claim 1, wherein the initial condition comprises initial side spin.

3. The method according to claim 1, wherein the falling condition is a falling velocity.

4. The method according to claim 1, wherein a calculation formula of the run is a quadratic function having the initial condition and the falling condition as variables.

5. The method according to claim 1, wherein when the run is defined as Dr (yard);

a target direction component of the falling velocity is defined as Vx (m/s);

a vertical direction component of the falling velocity is defined as Vy (m/s); and

initial side spin is defined as S (rpm), the run is calculated according to the following formula (1);

Dr=C₁×

Vx²−

C₂×

Vx+C₃Vy²+C₄×

Vy−

C₅×

S+C₆ 

 

(1)

wherein C₁, C₂, C₃, C₄, C₅, and C₆ are positive constants.

6. The method according to claim 1, wherein the initial condition is other than a initial back spin.

7. The method according to claim 2, wherein the initial condition is only the initial side spin.