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A power assist robot system reduces the weight of an object lifted with it. However, the root causes of the reduced heaviness as well as the factors affecting the heaviness are still unknown. The knowledge on the root causes and factors could be used to modulate the interactions between the human user and the robot when lifting objects with it. This paper investigated the reasons and factors behind...
A power assist system reduces the weight of an object lifted with it. But, the human operator cannot differentiate between the perceived weight and the actual weight and eventually applies excessive load force. This faulty force programming (excessive load force) results in faulty motions of the power assist system and jeopardizes its maneuverability, ease of use, naturalness, human-friendliness,...
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