Design and Control of a Discrete Variable Stiffness Actuator With Instant Stiffness Switch for Safe Human-Robot Interaction

Variable Stiffness Actuators (VSA) have been proposed as an alternative actuation system for manipulators that are utilized for safe physical Human-Robot Interaction (pHRI).However, in the incidents of collision, the need of a fast response in stiffness tuning would rise to ensure safety.In this paper, we present a novel Discrete Variable Stiffness

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Mitigation of drought stress effects on soybean gas exchanges induced by Azospirillum brasilense and plant regulators

Drought stress is a limitation for the agricultural production, having as a primary effect the reduction of plant gas exchanges, and the continuity of its incidence results in a lower yield.This study aimed to evaluate the photosynthetic responses and the soybean yield, concerning the seed inoculation and foliar spray with Azospirillum brasilense a

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