Hiroshi Okajima

42 papers B 6C 2Journal 21Unranked 13

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	From Noise to Knowledge: System Identification with Systematic Polytope Construction via Cyclic Reformulation. CoRR Hiroshi Okajima, Shun Shirahama, Tatsunori Hayashi, Nobutomo Matsunaga
2026	J	`jnl`	LMI Optimization Based Multirate Steady-State Kalman Filter Design. CoRR Hiroshi Okajima
2026	J	`jnl`	LMI Optimization-Based Multirate Steady-State Kalman Filter Design. IEEE Access Hiroshi Okajima
2026	J	`jnl`	Stable Inversion of Discrete-Time Linear Periodically Time-Varying Systems via Cyclic Reformulation. CoRR Hiroshi Okajima
2025	J	`jnl`	Cyclic Reformulation-Based System Identification for Periodically Time-Varying Systems. IEEE Access Hiroshi Okajima, Yusuke Fujimoto, Hiroshi Oku, Haruto Kondo
2025	J	`jnl`	Special Issue on Vehicle and Mobile Robot Technology (Part 1). J. Robotics Mechatronics Yuki Minami, Kenji Sawada, Yuichiro Sueoka, Hiroshi Okajima, Kazuma Sekiguchi
2025	J	`jnl`	Special Issue on Vehicle and Mobile Robot Technology (Part 2). J. Robotics Mechatronics Yuki Minami, Kenji Sawada, Yuichiro Sueoka, Hiroshi Okajima, Kazuma Sekiguchi
2025	J	`jnl`	System Identification Under Multi-rate Sensing Environment. CoRR Hiroshi Okajima, Risa Furukawa, Nobutomo Matsunaga
2025	J	`jnl`	System Identification Under Multirate Sensing Environments. J. Robotics Mechatronics Hiroshi Okajima, Risa Furukawa, Nobutomo Matsunaga
2024	J	`jnl`	Cyclic Reformulation Based System Identification for Periodically Time-varying Systems. CoRR Hiroshi Okajima, Yusuke Fujimoto, Hiroshi Oku, Haruto Kondo
2023	J	`jnl`	Design of Observer-Based Feedback Controller for Multi-Rate Systems With Various Sampling Periods Using Cyclic Reformulation. IEEE Access Hiroshi Okajima, Kenta Arinaga, Atsuo Hayashida
2023	J	`jnl`	Navigation System for Personal Mobility Vehicles Following a Cluster of Pedestrians in a Corridor Using Median of Candidate Vectors Observer. J. Robotics Mechatronics Nobutomo Matsunaga, Ikuo Yamamoto, Hiroshi Okajima
2023	J	`jnl`	Robust Cooperative Transport System with Model Error Compensator Using Multiple Robots with Suction Cups. J. Robotics Mechatronics Nobutomo Matsunaga, Kazuhi Murata, Hiroshi Okajima
2023	J	`jnl`	Special Issue on Navigation and Control Technologies for Autonomous Mobility. J. Robotics Mechatronics Yuki Minami, Hiroshi Okajima, Kenji Sawada, Kazuma Sekiguchi
2023	J	`jnl`	State Observer Under Multi-Rate Sensing Environment and Its Design Using l IEEE Access Hiroshi Okajima, Yohei Hosoe, Tomomichi Hagiwara
2022	J	`jnl`	Analysis of Measuring Precision of 3D Model of Ishigaki Stone in Kumamoto Castle Using Automatic CMG Crane System. J. Robotics Mechatronics Nobutomo Matsunaga, Masaki Kuwahara, Hiroshi Okajima, Gou Koutaki
2022	—	`conf`	Crowd Tracking of Electric Wheelchair using RGB-D Camera with Median of Candidate Vectors Observer. SICE Ikuo Yamamoto, Kouich Nakamura, Nobutomo Matsunaga, Hiroshi Okajima
2020	—	`conf`	A Design Method of Model Error Compensator using Meta-Heuristics and LMIs. SICE Ryuichiro Yoshida, Yuki Tanigawa, Hiroshi Okajima, Nobutomo Matsunaga
2020	—	`conf`	A Proposal of Collation Method Using Nonlinear SVM for Restoration of Stone Wall in Kumamoto Castle. SICE Yusuke Take, Shin-ya Tokunaga, Hiroshi Okajima, Nobutomo Matsunaga
2019	—	`conf`	Archive Method of Stone Wall in Kumamoto Castle Lifted by Small CMG Crane using Model Error Compensator. ASCC Nobutomo Matsunaga, Naufal Bayu Fauzan, Hiroshi Okajima, Gou Koutaki
2019	—	`conf`	Basic Idea of Periodically Time-Varying Dynamic Quantizer in Networked Control Systems. SICE Hiroshi Okajima, Yohei Hosoe, Tomomichi Hagiwara, Yuki Minami
2019	—	`conf`	Driver's Gaze-point Analysis of Virtual Platoon Driving for Welfare Vehicle using Direct Eye Measurement Device with HMD. ASCC Nobutomo Matsunaga, Yudai Takeuchi, Hiroshi Okajima
2019	—	`conf`	Dynamics modeling of necessary quantity of relief supplies in large-scale disasters. SICE Shizuku Kai, Minori Watanabe, Hiroshi Okajima
2019	—	`conf`	Restoration of Stone Wall "ISHIGAKI" Using Dropposition Information. SICE Yusuke Take, Hiroshi Okajima, Gou Koutaki, Nobutomo Matsunaga
2019	—	`conf`	State Estimation By Observer Using Median Operation for Observed Output with Outliers. SICE Hiroshi Okajima, Yasuaki Kaneda, Nobutomo Matsunaga
2018	B	`conf`	Driving Assistance of Welfare Vehicle with Virtual Platoon Control Method which has Collision Avoidance Function Using Mixed Reality. SMC Nobutomo Matsunaga, Ryota Kimura, Haruya Ishiguro, Hiroshi Okajima
2018	B	`conf`	Inter-Vehicle Distance Stabilization in Adaptive Cruise Control Using Signal Limitation Filter. SMC Yuta Nakabayashi, Hiroshi Okajima, Nobutomo Matsunaga
2016	J	`jnl`	Color quantization and optimization of luminance for digital mirror device-based projector. IEEE Trans. Consumer Electron. Gou Koutaki, Hiroshi Okajima, Nobutomo Matsunaga, Keiichi Uchimura
2016	B	`conf`	Demand Responsive Mobility as a Service. SMC Jecinta Kamau, Ashir Ahmed, Andrew Rebeiro-Hargrave, Hironobu Kitaoka, Hiroshi Okajima, Zahidul Hossein Ripon
2016	J	`jnl`	Dynamic Quantizer Design Under Communication Rate Constraints. IEEE Trans. Autom. Control. Hiroshi Okajima, Kenji Sawada, Nobutomo Matsunaga
2016	B	`conf`	Providing safe and affordable transportation to reduce female students dropout: A case study on college girls in rural Bangladesh. SMC Nuren Abedin, Jecinta Kamau, Hironobu Kitaoka, Hiroshi Okajima, Masaharu Okada, Akira Fukuda, Ashir Ahmed
2015	—	`conf`	Disturbance rejection performance limit for a class of disturbance signals. CDC Hiroshi Okajima, Toru Asai, Nobutomo Matsunaga
2015	B	`conf`	Optimization of color quantization with total luminance for DLP projector and its evaluation system. ICIP Gou Koutaki, Hiroshi Okajima, Nobutomo Matsunaga, Keiichi Uchimura
2015	C	`conf`	Robust and precise platoon driving control of welfare vehicles along wheel track by using model error compensator. IECON Tatsuya Sugano, Hiroshi Okajima, Nobutomo Matsunaga
2014	J	`jnl`	Impedance Control of Two d.o.f. CPM Device for Elbow Joint. J. Robotics Mechatronics Nobutomo Matsunaga, Shota Miyaguchi, Hiroshi Okajima, Shigeyasu Kawaji
2014	B	`conf`	Villager centered transport system in unreached communities. SMC Jecinta Kamau, Andrew Rebeiro-Hargrave, Emran Abdullah, Rafiqul Islam Maruf, Kunihiro Nobuhara, Hiroshi Okajima, Ashir Ahmed
2011	J	`jnl`	Emulation of Fast and Slow Pains Using Multi-Layer Sensor Modeled the Layered Structure of Human Skin. J. Robotics Mechatronics Nobutomo Matsunaga, Aydin Tarik Zengin, Hiroshi Okajima, Shigeyasu Kawaji
2011	J	`jnl`	Performance Limitation of Tracking Control Problem for a Class of References. IEEE Trans. Autom. Control. Hiroshi Okajima, Toru Asai
2010	C	`conf`	An Implementation of Fractional-order PID Controller with Dynamic Quantizer Considering the Memory Constraint. CCA Nobutomo Matsunaga, Koji Sasano, Hiroshi Okajima
2010	—	`conf`	Optimal quantization interval design of dynamic quantizers which satisfy the communication rate constraints. CDC Hiroshi Okajima, Nobutomo Matsunaga, Kenji Sawada
2009	—	`conf`	Unified form of performance limitations in reference tracking control problem for discrete time systems. CDC Hiroshi Okajima, Toru Asai, Shigeyasu Kawaji
2008	—	`conf`	Performance limitation of tracking control problem for a class of references. CDC Hiroshi Okajima, Toru Asai