YaBeSH Digital Library: Recent submissions
Now showing items 14021-14040 of 316660
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State Identification Via Symbolic Time Series Analysis for Reinforcement Learning Control
(The American Society of Mechanical Engineers (ASME), 2024)This technical brief makes use of the concept of symbolic time-series analysis (STSA) for identifying discrete states from the nonlinear time response of a chaotic dynamical system for model-free reinforcement learning ... -
Continuous-Time Algebraic Riccati Equation Solution for Second-Order Systems
(The American Society of Mechanical Engineers (ASME), 2024)The continuous-time algebraic Riccati equation (ARE) is often utilized in control, estimation, and optimization. For a linear system with a second-order structure of size n, the ARE required to be solved to get the control ... -
Reduced-Order Model Parameterization for Uncertain LTI SISO Systems
(The American Society of Mechanical Engineers (ASME), 2024)The primary goal of this paper is to develop a formal foundation to design an adaptive output feedback predictor for a class of unknown systems where parameters and order are unknown or high-dimensional. We present a ... -
Convex Optimization Based Design of Finite Impulse Response Filters for Reference Shaping
(The American Society of Mechanical Engineers (ASME), 2024)This paper explores design of finite impulse response (FIR) filters for controlling underdamped systems while dealing with uncertainties in model parameters. By setting magnitude constraints in the frequency domain within ... -
Offset-Free Koopman Model Predictive Control of Thermal Comfort Regulation for a Variable Refrigerant Flow-Dedicated Outdoor Air System-Combined System
(The American Society of Mechanical Engineers (ASME), 2024)Variable refrigerant flow (VRF) system has been an appealing solution of air conditioning for residential and commercial buildings, due to its flexibility and cost effectiveness, while lack of ventilation capability is a ... -
Reactive Gait Composition With Stability: Dynamic Walking Amidst Static and Moving Obstacles
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents a modular approach to motion planning with provable stability guarantees for robots that move through changing environments via periodic locomotion behaviors. We focus on dynamic walkers as a paradigm ... -
Integral Sliding Mode Disturbance Observer-Based Preview Repetitive Control
(The American Society of Mechanical Engineers (ASME), 2024)This paper deals with the problem of integral sliding mode disturbance observer (ISDOB)-based preview repetitive control (PRC) for a class of nonlinear systems subject to external disturbances and nonlinearity. First, an ... -
Transient Response Analysis of Nonlinear Oscillators With Fractional Derivative Elements Under Gaussian White Noise Using Complex Fractional Moments
(The American Society of Mechanical Engineers (ASME), 2024)Complex fractional moment (CFM), which is defined as the Mellin transform of a probability density function (PDF), has been successfully employed to find the response PDF of a wide variety of integer-order nonlinear ... -
A Time Headway Control Scheme for Virtually Coupled Heavy Haul Freight Trains
(The American Society of Mechanical Engineers (ASME), 2024)Virtual coupling of railway trains is an emerging technology that has the potential to significantly increase railway operational efficiency by reducing the train following distance from absolute braking distances to ... -
Surge-Elimination Strategy for Aero-Engine Transient Control
(The American Society of Mechanical Engineers (ASME), 2024)The fundamental principle of the transient state control method for turbofan engines, which is based on the acceleration ratio of high-pressure rotational speed (N-dot), involves sacrificing a portion of the safety margin ... -
Safe Reinforcement Learning-Based Balance Control for Multi-Cylinder Hydraulic Press
(The American Society of Mechanical Engineers (ASME), 2024)Considering the load uncertainty and unmodeled dynamics in multicylinder hydraulic systems, this paper proposes a balance control algorithm based on safe reinforcement learning to release the restrictions of classical ... -
Hierarchical Lateral Planning With Minimum Curvature Peak for Autonomous Vehicles
(The American Society of Mechanical Engineers (ASME), 2024)This study focuses on the lateral safety of autonomous vehicles. The aim is to provide greater safety margins for the motion controller under hazardous conditions by improving the planning methods. The proposed lateral ... -
Using Control Barrier Functions to Incorporate Observability: Application to Range-Based Target Tracking
(The American Society of Mechanical Engineers (ASME), 2024)In many nonlinear systems, the observability of the system is dependent on its state and control input. Thus, incorporating observability into a control scheme can enhance an observer's ability to recover accurate estimates ... -
Rejection of Sinusoidal Disturbances With Unknown Slowly Time-Varying Frequencies for Linear Time-Varying Systems
(The American Society of Mechanical Engineers (ASME), 2024)Recently, a class of adaptive schemes has been developed for rejecting sinusoidal output disturbances with unknown frequencies, phases, and amplitudes. These adaptive schemes require an accurate model of the affected ... -
Predictive Control Co-Design: A Single-Level Optimization Framework for Computationally-Efficient Approximation of Recursive Model Predictive Control in Control Co-Design
(The American Society of Mechanical Engineers (ASME), 2024)Control co-design (CCD) offers a promising solution for coordinating plant and control design of complex systems to better meet next generation demands. Most CCD algorithms optimize open-loop control signals that solve the ... -
A Graph-Based Technique for the Automated Control-Oriented Modeling of District Heating Networks
(The American Society of Mechanical Engineers (ASME), 2024)Advanced control strategies for delivering heat to users in a district heating network have the potential to improve performance and reduce wasted energy. To enable the design of such controllers, this paper proposes an ... -
Gas Path Fault Diagnosis of Turboshaft Engine Based on Novel Transfer Learning Methods
(The American Society of Mechanical Engineers (ASME), 2024)Data-driven fault diagnosis method is widely used in the field of engine health management, which uses engine sensor data as input and engine faulty components as output for component-level fault diagnosis of the engine. ... -
Nonlinear Filtering and Reinforcement Learning Based Consensus Achievement of Uncertain Multi-Agent Systems
(The American Society of Mechanical Engineers (ASME), 2024)This paper introduces a novel approach for designing estimators to achieve consensus in uncertain multi-agent systems (MAS), even when various fault conditions are present and communication is assumed to be undirected and ... -
Application of a Ranque–Hilsch Vortex Flow in an Internal Cooling of a Gas Turbine Engine Blade
(The American Society of Mechanical Engineers (ASME), 2024)The efficiency of a gas turbine engine is directly impacted by the turbine inlet temperature and the corresponding pressure ratio. A major strategy, aside from the use of costly high-temperature blade materials, is increasing ... -
A New Physics-Informed Condition Indicator for Cost-Effective Direct Current Solenoid Valves Using Significant Points of the Excitation Current
(The American Society of Mechanical Engineers (ASME), 2024)This paper proposes a new condition indicator (CI) for cost-effective industrial direct current (DC)-powered solenoid valves (SVs). First, a literature review of the failure modes for SVs is reported. The failure regarding ...