Bilateral drive gear—a highly backdrivable reduction gearbox for robotic actuators

H Matsuki, K Nagano, Y Fujimoto - IEEE/ASME Transactions on …, 2019 - ieeexplore.ieee.org
For safety purposes, cooperative robots are installed with an actuator composed of a low-
power servo motor, a reduction gearbox, and a torque sensor. When cooperative robots …

Precise joint torque control method for two-inertia system with backlash using load-side encoder

S Yamada, H Fujimoto - IEEJ Journal of Industry Applications, 2019 - jstage.jst.go.jp
Force/torque control is attracting considerable attention for the realization of compliant
motion in mechatronic systems such as industrial robots and human-support robots. They …

Fine load-side acceleration control based on torsion torque sensing of two-inertia system

Y Yokokura, K Ohishi - IEEE Transactions on Industrial …, 2018 - ieeexplore.ieee.org
Torsion-torque-sensing-based load-side acceleration control is proposed for a two-inertia
resonance system in this paper. This control uses a torsion torque sensor installed in a …

Smooth human interaction control using torsion torque controller and motor-side normalization compensator focusing on back-forward drivability

Y Kawai, Y Yokokura, K Ohishi… - IEEJ Journal of Industry …, 2019 - jstage.jst.go.jp
This paper focuses on back-forward drivability and defines the ideal drivability. This paper
proposes a new backforward drivable control method that achieves vibration suppression …

Ultra–thin joint torque sensor with enhanced sensitivity for robotic application

DY Seok, YB Kim, SY Lee, J Kim… - IEEE Robotics and …, 2020 - ieeexplore.ieee.org
As advanced robotic technologies such as human-robot interaction and automatic assembly
processes have emerged, torque sensors have become an essential component for robots …

High-robust force control for environmental stiffness variation based on duality of two-inertia system

Y Kawai, Y Yokokura, K Ohishi… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
The conventional force control has proposed load-side torque control based on the
resonance ratio control (RRC) enhanced by an instantaneous state observer using the …

Torque sensor embedded actuator module for robotic applications

YB Kim, U Kim, DY Seok, J So, YH Lee… - … ASME Transactions on …, 2018 - ieeexplore.ieee.org
Measuring accurate torque is a core ability of advanced robotic technologies. However,
embedding torque-sensing systems into robot joints are still a challenge due to limitations …

Force sensorless fine force control based on notch-type friction-free disturbance observers

H Nakamura, K Ohishi, Y Yokokura… - IEEJ Journal of …, 2018 - jstage.jst.go.jp
In order to realize force sensorless fine force control, this paper proposes a new notch-type
friction-free disturbance observer (DOB) and a new notch-type friction-free reaction force …

Development of an inherently safe nasopharyngeal swab sampling robot using a force restriction mechanism

CY Maeng, J Yoon, DY Kim, J Lee… - IEEE Robotics and …, 2022 - ieeexplore.ieee.org
The demand for autonomous nasopharyngeal swab sampling robot systems is increasing
owing to the recent outbreak of the respiratory virus pandemic. To protect the medical staff …

Torque-sensorless control of stepper motors for low-cost compliant motion generation

YL Huang, CH Liang, BH Chen, CC Lan - Ieee Access, 2021 - ieeexplore.ieee.org
Actuators that can generate controllable compliant output motion are suitable for robots that
need to interact safely with humans or the environment. To obtain the accurate output torque …