In this article, we summarize system identification and dynamic system modeling. Links to related articles and explanatory articles are placed at the bottom. Overview of System Identification Model Representation Example of System Identifi…

This article summarizes the stability of systems represented by state equations. Videos related to stability are placed at the bottom. Poles of the Controlled System and Stability When the Order of the Controlled System is 1 Lyapunov's Sta…

This article summarizes state feedback control for systems expressed in state equation form. It particularly touches on gain design using pole placement methods and the relationship between pole placement and performance. At the end, you c…

This article explains controller design based on optimal regulators for linear systems represented by state equations. Optimal regulators are a type of optimal control, also known as LQ control or LQR (Linear Quadratic Regulator). For an o…

This article summarizes state estimators (state observers) for systems represented by state equations. A video explaining the state observer for systems expressed by state equations is provided at the bottom. Observers are also called soft…

This article summarizes the equivalent transformation (coordinate transformation, equivalence transformation) of a system expressed by a state equation. A video explaining the equivalent transformation of state equations is provided at the…

This article summarizes the controllability and observability of systems. First, I would like to discuss controllability. Links to videos explaining controllability and observability are provided at the bottom. The overall picture of state…

This article summarizes the state-space realization of system state equations. In control based on state equations, deriving a mathematical model is the first step. A video explaining state equation representation is placed at the bottom. …

This article explains control using MATLAB with images and videos, focusing particularly on state feedback control. The videos and related article links explaining MATLAB simulations are provided at the bottom. The following article summar…

This article summarizes partial fraction decomposition. We will explain how to decompose rational functions using partial fraction decomposition and its use in control engineering. Links to videos and related articles that explain partial …

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…