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Electrocorticogram (ECoG) is a promising long-term signal acquisition platform for brain-computer interface (BCI) systems such as upper extremity prostheses. Several studies have demonstrated decoding of arm and finger trajectories from ECoG high-gamma band (80–160 Hz) signals. In this study, we systematically vary the velocity of three elementary movement types (pincer grasp, elbow and shoulder flexion/extension)...
Replication of human body motion is a very important means to maintain a subject's emotion, knowledge and experience. The replication process requires accurate motion capturing system with sensor technologies to measure postures of human bodies and posture transmission, as well as feedback systems to adjust postures to fit into targeted ones. The sensing and feedback technologies are fundamental building...
Chip attachment is an important step in packaging light-emitting diode (LED) chips. The attachment material provides mechanical support and heat dissipation. As high-power LED chips are targeted at general illumination applications, the thermal property of the die-attach material is critical to the light output and degradation of the lighting device. Silver epoxy, lead-free solder paste, and nanosilver...
In this paper, a 6-axis hybrid vibration isolation system based on a cubic configuration of Stewart platform is explored and the dynamic model of the developed 6-axis hybrid vibration isolation platform, in which both the displacement excitations on the lower platform and the force excitations due to payloads on the upper platform are simultaneously considered, is established based on the Newton-Euler...
Many assembly tasks such as gear mating, fine polishing or deburring need to use both force and position control in the cartesian coordinate to avoid damaging parts and achieve the desired smoothness. It is ineffective to control force variable in the joint coordinate. In the past, several position control methods in the cartesian coordinate were proposed. However, none of them can maintain fast and...
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