Masahiko Sakai

About

Masahiko Sakai is a leading researcher in the development of safe, force-controllable actuators and intelligent robotic systems for human-robot interaction and environmental conservation. His primary research areas include magnetic lead screw (MLS) actuators, helical teethed linear actuators, and computer vision for mobile robotics. Sakai’s most significant contribution is his work on force estimation methods for MLS-driven linear actuators, which enable high-efficiency, non-contact force transmission—critical for ensuring safety in collaborative robots. His 2018 paper on this topic has garnered 25 citations, reflecting its impact on the field. He also proposed a novel MLS actuator design without helical permanent magnets, simplifying construction while maintaining compliance for interactive robots. In environmental robotics, Sakai developed a trash detection algorithm using an improved YOLO framework, achieving 10 citations for its application in mobile robots to combat illegal dumping. Additionally, he led the creation of the underwater cultivating robot “EXPLOWER,” designed to soften seabeds for eelgrass growth, aiding coastal ecosystem restoration. Through his innovative actuator designs and vision-based systems, Sakai advances both human-safe robotics and sustainable automation.

Research Focus

Key Achievements

Top Papers

1. 1
   Force Estimation Method for a Magnetic Lead-Screw-Driven Linear Actuator

   25 citations · 2018
2. 2
   Trash Detection Algorithm Suitable for Mobile Robots Using Improved YOLO

   10 citations · 2023
3. 3
   Characteristics analysis of a helical teethed linear actuator

   7 citations · 2016
4. 4
   Proposal of a Magnetic Lead Screw Actuator without Helical Permanent Magnets

   2 citations · 2017
5. 5
   Development of Underwater Small Cultivating Robot “EXPLOWER”

   1 citations · 2022

Key Collaborators

Contact & Links