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A novel 5-DOF exoskeletal rehabilitation robot for upper limbs of hemiplegic patients caused bystroke is proposed in this paper.Its hardware structure is introduced and the control methods are ana-lyzed.To implement intelligent and interactive rehabilitation exercises,motion intention of patients’ up-per limb is introduced into control methods of rehabilitation exercises.In passive motions,according tothe character of unilateral impaired,multi-channels surface electromyogram(sEMG)signals of patients’healthy arm muscles are acquired and analyzed to recognize the upper limb motions,then drive the robotand assist paralysis arm’ s rehabilitation exercises.In active-resistant motions,because patients are re-covered with some muscle forces and active motion ability after a rehabilitation period,the tenninal forceloaded on the robot by an impaired arm are estimated with multi-channel joint torque sensors,accordingto which,the terminal velocity of the robot is controlled to drive the joint motions with a damp controller.
A novel 5-DOF exoskeletal rehabilitation robot for upper limbs of hemiplegic patients caused by stroke is proposed in this paper. Its hardware structure is introduced and the control methods are ana- lyzed. To implement intelligent and interactive rehabilitation exercises, motion intention of patients’ up -per limb is introduced into control methods of rehabilitation exercises. In passive motions, according tothe character of unilateral impaired, multi-channels surface electromyogram (sEMG) signals of patients’healthy arm muscles were acquired and analyzed recognize recognize of upper limb motions, then drive the robot and assist paralysis arm’s rehabilitation exercises. In active-resistant motions, because patients are re-covered with some muscle forces and active motion ability after a rehabilitation period, the tenninal force loaded on the robot by an impaired arm are estimated with multi -channel joint torque sensors, according to which, the terminal velocity of the robot is controlled to drive the joint mot ions with a damp controller.