Multi-directional random ball generator based on impact characteristics without inter-frame interface

Abstract

Tennis is a popular sport because of its excellent physical benefits; however, many individuals abandon the sport owing to the lengthy training period required to acquire game-ready skills. This is often due to the challenges of adapting to real game conditions on tennis courts after lessons. On the court, balls exhibit random positions and unpredictable timing; traditionally, players can only improve their adaptability through actual matches. This paper presents a multi-directional random ball generator that features randomness in ball placement and timing based on impact characteristics. The device uses a single ball that returns to the user with random bounce location and timing when struck. With this device, users can practice independently without requiring a skilled partner and can develop the ability to respond effectively to varying ball positions and timings on their own. By replicating the characteristics of a tennis court, consistent practice with this device helps players adapt more efficiently to real game conditions.