Abstract
In this study, the proposed design of a motion chair with four degrees of freedom (DoF) provides the pilot with the tactile sensations required by the human body to increase the immersion of flight simulation training. The chair includes a seat pan, a back pad, and a seat height. For the development of the proposed mechanism structure, the modular design is used to achieve the required displacement and acceleration. In addition, inverse kinematics is also constructed to meet the actuation needs. The control system can achieve real-time closed-loop control using an industrial computer, a motion control card, servo motors and drivers. This enables the structure to reach destinations with the shortest motion time and completes the required T-curve motion trajectory. The displacement, velocity, and acceleration of the designed structure are analyzed using SimWise4D software to verify the performance specifications of the structure. The experimental results indicate that the four-DoF control meets requirements of displacement, velocity, and acceleration.
Highlights
The training of pilots worldwide is typically lengthy.flight training simulators are in high demand and serve as essential tools in flight training
The contact sensations of the human body differ from the spatial sensations generated by the six-degrees of freedom (DoF) platform
Because each component has a single level of motion DoF, the researchers refer to the method used in [16]-[18] and identified inverse kinematic model based on the geometrical relationship between the connecting rods
Summary
The training of pilots worldwide is typically lengthy. flight training simulators are in high demand and serve as essential tools in flight training. In 1976, Cardullo et al [7] engaged in chair design with the hope of using a chair to stimulate the tactile sensory system They hoped that the seat would independently produce the expected skeletal posture changes, simulate regions related to skin contact changes, and reflect variation in the muscular pressure gradient. In [10], the researchers designed a single DoF seat simulator to examine the fatigue the body perceived after prolonged driving. Because each component has a single level of motion DoF, the researchers refer to the method used in [16]-[18] and identified inverse kinematic model based on the geometrical relationship between the connecting rods. It is very difficult to use the Stewart platform to train pilots as a simulator, especially for the sense of gravity in a short distance movement. This paper presents some new ideas in the implementation of motion chair control systems, including an adjustable speed control system and short distance stroke control system
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