Robust and Optimal Control
A Two-port Framework Approach
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Article
Integrating machine learning and multi-objective optimization to investigate the magnetic and mechanical properties of FeSiCr soft magnetic composite processed by selective laser melting
Soft magnetic composite (SMC) products have been widely used in electromagnetic applications due to their unique properties, including extremely low eddy current loss and relatively low total core loss at medi...
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Article
Machine learning applied to property prediction of metal additive manufacturing products with textural features extraction
Laser powder bed fusion (LPBF) is one of the common metal additive manufacturing technologies, which has been increasingly applied across various industries, including healthcare, manufacturing, and aerospace,...
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Article
3D magnetic flux density measurement with reduced sampling and high accuracy using visual localization and adaptive mesh generation
Accurate measurement of magnetic flux density distribution is paramount for various industrial applications, including but not limited to automotive design, electronics, and renewable energy systems. Tradition...
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Article
Novel diagonal scanning strategy for the laser powder bed fusion process
Under the current scanning strategy, the qualities of contour accuracy and workpiece porosity are still major problems in the laser powder bed fusion (LPBF) process. This study proposes a diagonal scanning str...
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Article
Predicting magnetic characteristics of additive manufactured soft magnetic composites by machine learning
Selective laser melting (SLM) is one of the widely used metal additive manufacturing techniques. While SLM is able to produce high-quality products, the parameter selection process can be very complicated, esp...
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Article
Advanced Application of Centralized Control for a Scanning Mirror System Based on EtherCAT Fieldbus
Distributed control is the most popular control strategy for controlling numerous slave devices. However, the performance of slave devices is hard to improve because the control algorithm is handled by the com...
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Chapter and Conference Paper
Design and Realization of a Performance and Reliability Evaluation Module for Commercialized Anti-lock Braking Systems
A novel testing system is designed and realized for fulfilling the performance and durability tests of commercial ABS modules. Instead of using real rotating component to generate slip** condition for trigge...
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Book
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Chapter
Introduction
This book presents a fresh approach to optimal controller synthesis for linear time-invariant (LTI) control systems. The readers are assumed to have taken taught modules on automatic control systems, including...
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Chapter
Preliminaries
Classical control design and analysis utilizes the frequency domain tools to specify the system performance. The background of operator theories and single-input and single-output, linear systems is required. ...
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Chapter
Linear Fractional Transformations
This chapter introduces the linear fractional transformation (LFT), which is a convenient and powerful formulation in control system analysis and controller synthesis. The LFT formulation employs a two-port ma...
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Chapter
Coprime Factorizations
Coprime factorization originates from algebra studied by French mathematician E. Bezout [1]. In recent years, it has been used to describe dynamic systems [6]. Coprime factorization can be applied in controlle...
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Chapter
CSD Approach to Stabilization Control and H 2 Optimal Control
For a control system under investigation, an important design objective is to find a controller such that the closed-loop system satisfies a set of desired specifications. Furthermore, it is desirable to chara...
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Chapter
Two-Port Networks
This chapter will briefly introduce two-port network descriptions which are closely related to that of the general control framework involving descriptions using LFT and CSD. The two-port network was developed...
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Chapter
Chain Scattering Descriptions
The chain scattering-matrix description (CSD) of a two-port network, first introduced in Chap. 2, originated from the conventional electrical circuit theory. In contrast to the LFT, the CSD developed in the ne...
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Chapter
Algebraic Riccati Equations and Spectral Factorizations
In the last chapter, it was discussed that the algebraic Riccati equation (ARE) need be solved in order to obtain the state-space solutions of the normalized coprime factorizations. In Chap. 2, the Lyapunov eq...
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Chapter
Design Examples
In this chapter, several design examples are illustrated to demonstrate the validity of the CSD two-port framework. Two different design methodologies with respect to speed control of DC servomotors are presen...
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Chapter
A CSD Approach to H-Infinity Controller Synthesis
H ∞ optimal control, which minimizes the H ∞-norm of a closed-loop system, has been developed in the last 30 years and been applied in various domains. The original H ...
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Article
High-speed contouring control with NURBS-based C2 PH spline curves
This paper presents a C2 Pythagorean hodograph (PH) spline curve constructed by the non-uniform rational B-spline (NURBS) curve for high-speed contouring control. With the knot vector, weights, and control points...
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Article
A stand-alone peristaltic micropump based on piezoelectric actuation
Despite significant efforts to develop micropumps, cumbersome driving equipment means that the design of portable micropumps remains a challenge. This study presents a stand-alone micropump system, which inclu...
