Dynamic performance of a series elastic actuator with variable stiffness logarithmic spiral spring
Tóm tắt
The present paper investigates a variable stiffness elastic actuator, which was adjusted using a special-purpose mechanism. A model was derived to obtain the response of the actuator. Concurrently, an experimental setup was designed and manufactured to validate the theoretical model. A novel control scheme is adopted to enhance the response through stiffness variation. Results showed that the time of response is reduced by 73% as compared to that of a constant stiffness actuator. In order to find the effectiveness of the proposed control scheme, a PID controller is implemented, where the response time was reduced by 58% using the former.
Tài liệu tham khảo
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