Abstract
<p class="0abstract">This paper introduces a device to support lower extremity rehabilitation for stroke patients. First, the device's mechanical structure has been presented; the device has a simple structure and fully meets the exercise function for the patient. The equipment is controlled by control and monitoring software, which is designed from Visual Basic software. The control circuit is the Arduino 2560 circuit, responsible for receiving the angle sensor signal and measuring the current during operation. In addition, the control circuit provides control signals to the actuator and communicates with the software using the rs232 cable. Next, the mathematical model of the device has been established, and we use MatLab software to simulate the response of the device to the PID controller. Simulation results for fast response time and slight overshoot. Finally, an experiment on volunteers was conducted, the results showed that the device was stable and safe to operate. Thus, the RHleg device has been successfully designed and manufactured, tested on volunteers with good results, and this is the basis for us to continue moving towards patient testing.</p>
Highlights
Stroke patients are increasing; the disease occurs in the elderly and in young people who are likely to get sick
In order to help stroke patients soon integrate into everyday life, patients need to be rehabilitated as soon as possible [5]
Automated rehabilitation device applications help doctors and technicians reduce labor and increase the number of patients supported with exercise during the day
Summary
Stroke patients are increasing; the disease occurs in the elderly and in young people who are likely to get sick. The authors have developed a training device that allows patients to exercise the ankle, knee, and hip joints. The authors have developed a Lambda training device based on a parallel movement that allows patients to exercise the lower extremity joints. The test result for the reciprocating motion error of the mechanism is 0.05-0.3 mm The advantage of this group is that it supports the patient to regain the leg after a stroke. A device to support lower extremity rehabilitation with 3 degrees of freedom is introduced for hip, knee, and ankle joints flexion/extension exercise. The current sensor is used to measure the torque of the machine during operation This device is a new research model in Vietnam to create lower limb rehabilitation equipment for the treatment of patients.
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