| 摘要 |
Golf practice apparatus, comprising two sphere segments of a simulated golf ball mounted on opposing sides of a pivotal structure, strain gauges mounted on the structure to measure strains caused by a strike force to the simulated ball, an electronics unit for digitally encoding voltages resulting from the strains, and software for determining a three-dimension strike force, torque content thereof, and strike force duration. Strain gauges mounted on the structure between the ball segments determine one component of the strike force and torque about both horizontal and vertical axes. Strain gauges mounted on a support column of the pivotal structure determine the remaining strike force components. Additional software is disclosed for deriving an initial three-dimension velocity vector and spin rates about both horizontal and vertical axes of a free ball similarly struck whereby a three-dimension trajectory of a free golf ball may be computed.
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