| 2024 | IECON | Basic Study on Vortex Ring State Detection of Multi-rotor UAV Using Motor Counter Torque Observer. | Manto Kamiya, Sakahisa Nagai, Hiroshi Fujimoto |
| 2024 | IECON | Two-pulse Width Modulation for Voltage Regulation and Reduction of Electromagnetic Field Radiated by Third Harmonic Current in Wireless Power Transfer System. | Sakahisa Nagai, Toshiyuki Fujita, Osamu Shimizu, Hiroshi Fujimoto |
| 2023 | IECON | Test Bench Study on Attitude Estimation in Ground Effect Region Based on Motor Current for In-Flight Inductive Power Transfer of Drones. | Kota Fujimoto, Sakahisa Nagai, Nguyen Binh Minh, Hiroshi Fujimoto |
| 2023 | IECON | Learning-Based Distributed Approach to Energy-Optimized Speed Trajectory for Electric Vehicles at Multiple Signalized Intersections. | Yuki Hosomi, Binh-Minh Nguyen, Sakahisa Nagai, Hiroshi Fujimoto |
| 2023 | IECON | Multirate Attitude Control of Dual-Rotor System Considering Propeller Loss of Effectiveness. | Binh-Minh Nguyen, Sakahisa Nagai, Hiroshi Fujimoto |
| 2023 | IECON | Basic Study on Received Power Control of In-Flight Inductive Power Transfer for Drones by Active Rectifier Switching and Altitude Regulation. | Yusuke Satoh, Kota Fujimoto, Ryo Matsumoto, Nguyen Binh Minh, Sakahisa Nagai, Hiroshi Fujimoto |
| 2019 | IECON | Position/Force Sensorless Force Control Using Reaction Force Observer for Compact Dual Solenoid Actuator. | Sakahisa Nagai, Atsuo Kawamura |
| 2018 | IECON | Sensorless Position Estimation with Thermal Compensation for Compact Dual Solenoid Actuator. | Sakahisa Nagai, Atsuo Kawamura |
| 2017 | IECON | Fast force control using acceleration-aided Kalman filter and reaction force observer for probing systems. | Sakahisa Nagai, Roberto Oboe, Tomoyuki Shimono, Atsuo Kawamura |