Linear matrix inequalities (LMIs) and controller design The method using Linear Matrix Inequality (LMI) is one of the most powerful controller design methods in the field of control engineering. The usefulness of controller design using LM…

Discretization of Continuous-Time Control Systems When expressing the characteristics of a control target based on physical laws, it is often represented in the form of differential equations, which are treated within the framework of cont…

This blog is about state estimation method unaffected by sensor outliers. Explanation of state observer in the below. The state estimation problem for systems where observation outputs include outliers is addressed herein. When the observa…

Optimal Velocity Control Method in Path Following Control Problem IFAC World Congress 2008 youtu.be Conference paper link: Optimal Velocity Control Method in Path Following Control Problem - ScienceDirect

Unified Form of Performance Limitations in Reference Tracking Control Problem for Discrete-Time Systems Hiroshi Okajima, Toru Asai, Shigeyasu Kawaji the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese …

Optimal quantization interval design of dynamic quantizers which satisfy the communication rate constraints Hiroshi Okajima, Kenji Sawada, Nobutomo Matsunaga 49th IEEE Conference on Decision and Control (CDC) youtu.be Conference paper link…

Model Error Compensator for adding robustness for existing systems IFAC world congress 2023, Yokohama, Japan youtu.be Conference paper link: Model Error Compensator for adding Robustness toward Existing Control Systems⋆ - ScienceDirect Add…

Direct Yaw-moment Control method for electric vehicles to follow the desired path by driver Hiroshi Okajima; Shouhei Yonaha; Nobutomo Matsunaga; Shigeyasu Kawaji Proceedings of SICE Annual Conference 2010 youtu.be Proceedings link: Direct …

A Design Method of Delta-Sigma Data Conversion System with Pre-Filter Hiroshi Okajima; Maho Honda; Rei Yoshino; Nobutomo Matsunaga SICE Journal of Control, Measurement, and System Integration Volume 8, 2015 - Issue 2: Special Issue on SICE…

State Estimation By Observer Using Median Operation for Observed Output with Outliers Hiroshi Okajima; Yasuaki Kaneda; Nobutomo Matsunaga 2019 58th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE) youtu.…

Basic Idea of Periodically Time-Varying Dynamic Quantizer in Networked Control Systems Hiroshi Okajima; Yohei Hosoe; Tomomichi Hagiwara; Yuki Minami 2019 58th Annual Conference of the Society of Instrument and Control Engineers of Japan (S…

Integrated Design of Filter and Interval in Dynamic Quantizer under Communication Rate Constraint H. Okajima, K. Sawada, N. MatsunagaIFAC World Congress 2011 youtu.be Conference paper link: Integrated Design of Filter and Interval in Dynam…

This article discusses control methods for systems with unstable zeros. Characteristics and limits of the system with unstable zeros are introduced. Unstable Zeros Examples of Systems with Unstable Zeros Representation of Systems with Unst…