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We propose a novel method for movement assistance that is based on adaptive oscillators, i.e., mathematical tools that are capable of extracting the high-level features (amplitude, frequency, and offset) of a periodic signal. Such an oscillator acts like a filter on these features, but keeps its output in phase with respect to the input signal. Using a simple inverse model, we predicted the torque...
Passive and active movement therapies are essential in the rehabilitation process post stroke and other neurological disorders. Considering the shortage of therapists and limited insurance coverage, qualified healthcare services are not always available to patients. There is also a lack of compact rehabilitation robots powerful enough to perform forceful stretching of spastic joint and yet flexible...
In this paper the trajectory tracking control of the arm rehabilitation robot for stroke patients is investigated by an interactive robust control approach. The functions of patients' voluntary joint torques are designed depending on the motion ability of their arms, and the dynamic model of the human-robot system is presented. Based on the dynamic model, an interactive controller is designed to provide...
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