Realization of a virtual sports training system with parallel wire mechanism

Morizono, Tetsuya; Kurahashi, Kazuhiro; Kawamura, Sadao

doi:10.1109/robot.1997.606747

Cited by 40 publications

(14 citation statements)

References 8 publications

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“…Typical illustrations of such systems for sports analysis involve the use of accelerometers for upperextremity lawn bowling analysis [2], smart floor development for ground reaction force measurements [3], vision-based systems for badminton, golf swing, walking, and karate movement [4,5], and a combination of sensor and vision technology for soccer gait recognition [6]. Morizono et al [7] and Hamalainen et al [8] proposed virtual-reality-based sports training for 'playing catch' and martial arts. The use of such systems has contributed to the improvement in sports performance, detection of improper movements, identification of injury prevention techniques, and long-term examination of sports movements.…”

Section: Introductionmentioning

confidence: 99%

A real-time interactive biofeedback system for sports training and rehabilitation

Alahakone

Senanayake

2010

Proceedings of the Institution of Mechanical Engineers, Part P:

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Biofeedback systems have become a prominent component in the sports domain as a means of motor training and rehabilitation. This paper presents the development of a biofeedback prototype and system software framework facilitating its functionality in real time. The prototype incorporates an inertial measurement sensor unit, a wireless vibration stimulus module for vibrotactile biofeedback, and interactive system software behaving as the backbone of the system. The functionality of the prototype was tested with a stability test during which biofeedback was provided to improve postural control based on trunk tilt displacements. The test involved subjects standing in the tandem Romberg position during which their medial-lateral trunk tilt was measured, and postural sway biofeedback was conveyed via vibrotactile actuators placed on either side of the trunk. Two conditions were tested, namely eyes open and eyes closed, and postural sway with biofeedback was evaluated, as opposed to with no feedback. A 15.2 per cent sway reduction resulted in the eyes-open condition, and a significant reduction of 55.2 per cent was reported for the eyes-closed condition. The results demonstrate that instantaneous feedback provided via vibration stimulus can reduce postural sway based on trunk tilt measurements. Hence, the system's pertinence to comparable approaches employed in sports training and rehabilitation is foreseen.

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Section: Introductionmentioning

confidence: 99%

A real-time interactive biofeedback system for sports training and rehabilitation

Alahakone

Senanayake

2010

Proceedings of the Institution of Mechanical Engineers, Part P:

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“…Some designs involving cable-driven mechanisms were devised as the primary haptic display in a virtual environment. For instance, cable-driven devices have proven their efficiency as haptic interfaces in virtual sport training such as a tennis force display (Kawamura et al, 1995) and a catch playing simulator (Morizono et al, 1997). In this chapter, it is shown that a hybrid admittance/impedance strategy for controlling the CDLI combines the benefits of both control classes and exploits the contact points geometry and the physical properties (stiffness, friction, etc.)…”

Section: Reviewmentioning

confidence: 99%

Cartesian Control of a Cable-Driven Haptic Mechanism

Otis¹,

Duchaine²,

Billette³

et al. 2010

Advances in Haptics

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“…After neglecting the passive joints and considering the twist of the i-th wire, the unit screw expression of the i-th wire is: (8) …”

Section: Fig 3 Screw Axes Of Joints Of the I-th Wiresmentioning

confidence: 99%

A Unified Approach for the Kinematic and Force Analysis of Simple Wire-Driven Platform Mechanisms

Lin

Liu

2004

J. mech.

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In the analysis of simple wire-driven platform (SWDP) mechanisms, the tension and the posture of each wire can be formulated, and expressed in an integrated screw representation naturally. In this study, a unified approach for analyzing the kinematics and kinetics of SWDP mechanisms based on the screw theory is proposed and developed, which includes the screw-based Jacobian, the static and dynamic equilibrium of wires and platform, and the singularity analysis. Via using the unified screw-based approach, the investigation on the characteristics of SWDP mechanisms, therefore, can be more efficient and simplified. An example is presented to demonstrate this unified approach.

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Realization of a virtual sports training system with parallel wire mechanism

Cited by 40 publications

References 8 publications

A real-time interactive biofeedback system for sports training and rehabilitation

A real-time interactive biofeedback system for sports training and rehabilitation

Cartesian Control of a Cable-Driven Haptic Mechanism

A Unified Approach for the Kinematic and Force Analysis of Simple Wire-Driven Platform Mechanisms

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