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RISInvestigating Trajectory-Based Combustion Control Using a Controlled Trajectory Rapid Compression and Expansion Machine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents a systematic framework for the real-time implementation of a new combustion control strategy—trajectory-based combustion control—for the operation of free piston engines (FPEs). The free piston engine ...
Analysis and Synthesis of Spool Valves With Arbitrary Metering Area Variation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a systematic method for analyzing and designing the notches on the spool of a flow control valve to influence the areaschedule, i.e., relationship between the spool position and the metering area. The ...
Spectral Analysis of Electrohydraulic System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents spectral analysis of an electrohydraulic system. For a linear system, spectral analysis using a frequency response function (FRF) offers great insight into system dynamics and controls. The objective ...
A Control-Oriented Model for Trajectory-Based HCCI Combustion Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Previously, the authors have proposed the concept of piston trajectory-based homogeneous charge compression ignition (HCCI) combustion control enabled by a free piston engine (FPE) and shown its benefits on both engine ...
Robust Tracking Control for Electrohydraulic System Using an Internal Model-Based Sliding Surface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An electrohydraulic system, which is widely applied in practice, is a highly nonlinear system with uncertainty. In order to improve the control performance, the nonlinearity and uncertainty should be taken into consideration. ...
Design and Experimental Investigation of Rotational Angle Based Tracking Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates tracking control in the rotational angle domain based on the timevarying internal model principle. The objective is to enable precise, reliable, and computationally efficient output tracking of ...
Design, Modeling, and Control of a Hardware-in-the-Loop Testbed for Off-Road Vehicles1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the design, modeling, and control of a hardware-in-the-loop (HIL) testbed for off-road vehicles. The proposed HIL testbed employs a transient hydrostatic dynamometer to load a diesel engine to emulate ...
A Control Oriented Two Zone Charge Mixing Model for HCCI Engines With Experimental Validation Using an Optical Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A controloriented twozone charge mixing model is developed to simplify, but to describe mixing of fresh charge and residual gas during the intake stroke. Engine valve timing has a strong influence on the realization of ...
Control of Combustion Phasing Using Accelerometer-Based Non-Intrusive Sensing1
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measuring the combustion phasing of an engine using in-cylinder pressure sensors is well established. However, pressure sensors need to be directly exposed to the in-cylinder environment, requiring changes to the cylinder ...