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Journal articles on the topic 'THROTTLE BASED APPROACH'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

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1

Wang, Dapeng, Shaogang Liu, Youguo He, and Jie Shen. "Barrier Lyapunov Function-Based Adaptive Back-Stepping Control for Electronic Throttle Control System." Mathematics 9, no. 4 (2021): 326. http://dx.doi.org/10.3390/math9040326.

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This paper presents an adaptive constraint control approach for Electronic Throttle Control System (ETCS) with asymmetric throttle angle constraints. The adaptive constraint control method, which is based on barrier Lyapunov function (BLF), is designed not only to track the desired throttle angle but also to guarantee no violation on the throttle angle constraints. An ETC mathematic model with complex non-linear system is considered and the asymmetric barrier Lyapunov function (ABLF) is introduced into the design of the controller. Based on Lyapunov stability theory, it can be concluded that t

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2

Zuti, Zhang, Cao Shuping, Luo Xiaohui, Shi Weijie, and Zhu Yuquan. "New approach of suppressing cavitation in water hydraulic components." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 21 (2016): 4022–34. http://dx.doi.org/10.1177/0954406216657847.

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Cavitation frequently appears in high pressure water hydraulic components and leads to serious hydraulic erosions and horrible hydrodynamic noises. In this paper, a novel approach of suppressing cavitation was proposed, inducing the outlet pressure back to the orifice to improve the pressure distribution of throttle valves. In order to realize this approach, an optimized throttle valve chamber structure was designed. After that, the anticavitation performance of the valve was investigated. A theoretical cavitation cloud model was built based on bubble dynamics. In order to solve the mathematic

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3

Wan, Junli. "Nonlinear Control of Electronic Throttle Based on Backstepping Approach." American Journal of Electromagnetics and Applications 4, no. 1 (2016): 1. http://dx.doi.org/10.11648/j.ajea.20160401.11.

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4

Wang, Haihang, He Xu, Vishwanath Pooneeth, and Xiao-Zhi Gao. "A Novel One-Camera-Five-Mirror Three-Dimensional Imaging Method for Reconstructing the Cavitation Bubble Cluster in a Water Hydraulic Valve." Applied Sciences 8, no. 10 (2018): 1783. http://dx.doi.org/10.3390/app8101783.

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In order to study the bubble morphology, a novel experimental and numerical approach was implemented in this research focusing on the analysis of a transparent throttle valve made by Polymethylmethacrylate (PMMA) material. A feature-based algorithm was written using the MATLAB software, allowing the 2D detection and three-dimensional (3D) reconstruction of bubbles: collapsing and clustered ones. The valve core, being an important part of the throttle valve, was exposed to cavitation; hence, to distinguish it from the captured frames, the faster region-based convolutional neural network (R-CNN)

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Liu, Yong Gang, Zhen Zhen Lei, Li Lai Lu, and Liang Chen. "Control System Integration for Dual Clutch Transmissions Based on Modular Approach." Applied Mechanics and Materials 390 (August 2013): 419–23. http://dx.doi.org/10.4028/www.scientific.net/amm.390.419.

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Modular approach has been adopted in this paper to divide DCT transmission control unit into four modules, which are clutch control, synchronizer control, shift assembly control and vehicle control respectively. The function for each module has been analyzed and the control logic relations among these modules have also been established for modular integration. Moreover, the modeling process and control strategies for each module have been established for respective control objection. On this basis, the simulation model of transmission control unit for DCT has been built using the Matlab/Simuli

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6

Phan, Van Du, Van Nam Dinh, Phuc Ngoc Nguyen, et al. "LQG-based optimal control approach of an electronic throttle valves using DC servo system." International Journal of Power Electronics and Drive Systems (IJPEDS) 16, no. 2 (2025): 882. https://doi.org/10.11591/ijpeds.v16.i2.pp882-890.

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A direct current (DC) motor is used for automotive electronic throttle valves (AETV) to adjust incoming air into the engine’s combustion system, which has many advantages such as smooth, fast response, and simplicity. However, high-accuracy tracking control for AETV faces various obstacles because of the nonlinear features, hard identification, and noise. In this paper, a model of the AETV with four states in the form of a state space is developed. Then, a Kalman filter is formulated to eliminate the impact of measurement noise. The Kalman filter gain is obtained via the solve the linear quadr

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7

Zhang, Feitie, Shoudao Huang, Xuelong Li, and Fengjin Guan. "Research on Control-Oriented Modeling for Turbocharged SI and DI Gasoline Engines." Journal of Chemistry 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/765083.

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In order to analyze system performance and develop model-based control algorithms for turbocharged spark ignition and direct injection (SIDI) gasoline engines, a control oriented mean value model is developed and validated. The model is constructed based on theoretical analysis for the different components, including the compressor, turbine, air filter, intercooler, throttle, manifold, and combustion chamber. Compressor mass flow and efficiency are modeled as parameterized functions. A standard nozzle model is used to approximate the mass flow through the turbine, and the turbine efficiency is

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8

Chopra, Kapil, V. Sahni, and R. S. Mishra. "Energetic and Exergetic Based Comparison Multiple Evaporators with Compound Compression and Flash Intercooler with Individual or Multiple Throttle Valves." International Journal of Advance Research and Innovation 1, no. 1 (2013): 67–76. http://dx.doi.org/10.51976/ijari.111309.

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The utility of second law analysis on vapour compression refrigeration systems is well defined because it gives the idea for improvements in efficiency due to modifications in existing design in terms of reducing exergy destructions in the components. Due to effect of global warming and ozone depletion the comparison and impact of environmental friendly refrigerants (R507a, R410a, R290, R600, R600a, R1234yf, R404a, R125, R717, R152a and R407C) on multiple evaporators at different temperature with compound compression and flash intercooler with individual and multiple throttle valves is importa

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9

Zhao, Zhihui, Zhe Wu, Weiqiang Wang, et al. "CFD-DPM Model of Gas–Solid Two-Phase Flow Erosion of Needle Throttle Valve." Coatings 15, no. 2 (2025): 248. https://doi.org/10.3390/coatings15020248.

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During shale gas field production, wellhead throttle valves are prone to erosion caused by solid particles carried in the gas stream, posing significant safety risks. Existing studies on erosion primarily focus on simple structure like elbows and tees, while research on gas–solid two-phase flow erosion in needle throttle valves remains limited. This paper establishes a numerical model based on the CFD-DPM approach, integrating actual shale gas field production conditions to investigate the erosion behavior of needle throttle valves under varying openings, particle sizes, inlet velocities, and

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10

B., Ashok, Denis Ashok S., and Ramesh Kumar C. "An Integrated Pedal Follower and Torque Based Approach for Electronic Throttle Control in a Motorcycle Engine." Engineering Journal 21, no. 1 (2017): 63–80. http://dx.doi.org/10.4186/ej.2017.21.1.63.

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11

Pluta, Janusz, and Marek Sibielak. "Testing of Throttle Valve Prototype Controlled by Piezoelectric Stack." Solid State Phenomena 177 (July 2011): 47–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.177.47.

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This paper aims to present the results of the testing a single-stage electrically actuated throttle valve, in which a piezoelectric stack was used for adjustment of the flow section area of the throttle aperture. The valve prototype was built based on a proprietary design, using the components of a standard manufactured overflow valve. The complete valve was designed on the basis of the results of simulation tests performed on a mathematical model. The constitutive equations presented herein, describing all critical phenomena and influences present in the component, were applied for the modell

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12

Smith, Shaun, James Knowles, and Byron Mason. "Numerical continuation applied to internal combustion engine models." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 14 (2020): 3458–75. http://dx.doi.org/10.1177/0954407020928665.

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This paper proposes tools from bifurcation theory, specifically numerical continuation, as a complementary method for efficiently mapping the state-parameter space of an internal combustion engine model. Numerical continuation allows a steady-state engine response to be traced directly through the state-parameter space, under the simultaneous variation of one or more model parameters. By applying this approach to two nonlinear engine models (a physics-based model and a data-driven model), this work determines how input parameters ‘throttle position’ and ‘desired load torque’ affect the engine’

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13

Maldonado, Bryan P., Nan Li, Ilya Kolmanovsky, and Anna G. Stefanopoulou. "Learning reference governor for cycle-to-cycle combustion control with misfire avoidance in spark-ignition engines at high exhaust gas recirculation–diluted conditions." International Journal of Engine Research 21, no. 10 (2020): 1819–34. http://dx.doi.org/10.1177/1468087420929109.

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Cycle-to-cycle feedback control is employed to achieve optimal combustion phasing while maintaining high levels of exhaust gas recirculation by adjusting the spark advance and the exhaust gas recirculation valve position. The control development is based on a control-oriented model that captures the effects of throttle position, exhaust gas recirculation valve position, and spark timing on the combustion phasing. Under the assumption that in-cylinder pressure information is available, an adaptive extended Kalman filter approach is used to estimate the exhaust gas recirculation rate into the in

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14

Миргород, В. Ф., та И. М. Гвоздева. "ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ МЕТОДІВ ТРЕНДОВОГО АНАЛІЗУ І КОНТРОЛЮ ПРИ АНАЛІЗІ ТЕХНІЧНОГО СТАНУ ГАЗОТУРБІННИХ ДВИГУНІВ". Aerospace Technic and Technology, № 7 (7 липня 2017): 151–56. http://dx.doi.org/10.32620/aktt.2017.7.21.

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The paper suggests an approach to joint trend analysis and trend monitoring of time series formed by the parameters of gas-turbine engines technical conditions in their long-term operation. The proposed approach is based on forming the diagnostic model in the form of a polynomial approximation of the throttle characteristics for the reference motor and selecting the deviations from this model. For the obtained multidimensional time series of deviations from the diagnostic model, the known methods of trend analysis and trend monitoring are consistently applied. The proposed approach makes it po

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15

Jan, Ahmed Zubair, Krzysztof Kedzia, and Muhammad Jamshed Abbass. "Fractional-Order PID Controller (FOPID)-Based Iterative Learning Control for a Nonlinear Boiler System." Energies 16, no. 3 (2023): 1045. http://dx.doi.org/10.3390/en16031045.

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For the boiler-turbine unit in power systems, a coordinated control structure plays a crucial role in maintaining the balance in supply and demand of energy, reducing pollutant emissions and optimizing energy efficiency. The matching requirements of the turbine and boiler, the wide range of load changes, and the cooperative operation of many devices in the power system pose many challenges to designing a coordinated control system for the boiler turbine system, thus making the control design a difficult task. In this paper, iterative learning control (ILC) is used to maintain the throttle pres

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16

Harjit, Singh*1 &. Harpreet Kaur2. "OPTIMIZED ENVIRONMENT ALLOCATION FOR STATIC AND DYNAMIC TASKS BASED ON THROTTLE ALGORITHM IN CLOUD." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 7 (2018): 1–11. https://doi.org/10.5281/zenodo.1305803.

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<strong>ABSTRACT</strong> Cloud computing is a developing computing technology that has tend to every entity in the digital organization, it can be personal or government sector. Taking into account the significance of cloud computing, finding new ideas in advancements of cloud computing services is an area of research field. With the initiation of the Cloud, deployment and hosting became easier and cheaper with the use of pay-per-use model offered by Cloud providers. Usually clouds have powerful data centers and data controller to handle large number of users. Cloud is a platform providing dy

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17

Abdalkafor, Ahmed Subhi, and Khattab M. Ali Alheeti. "A hybrid approach for scheduling applications in cloud computing environment." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (2020): 1387. http://dx.doi.org/10.11591/ijece.v10i2.pp1387-1397.

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Cloud computing plays an important role in our daily life. It has direct and positive impact on share and update data, knowledge, storage and scientific resources between various regions. Cloud computing performance heavily based on job scheduling algorithms that are utilized for queue waiting in modern scientific applications. The researchers are considered cloud computing a popular platform for new enforcements. These scheduling algorithms help in design efficient queue lists in cloud as well as they play vital role in reducing waiting for processing time in cloud computing. A novel job sche

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18

Ahmed, Subhi Abdalkafor, and M. Ali Alheeti Khattab. "A hybrid approach for scheduling applications in cloud computing environment." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (2020): 1387–97. https://doi.org/10.11591/ijece.v10i2.pp1387-1397.

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Cloud computing plays an important role in our daily life. It has direct and positive impact on share and update data, knowledge, storage and scientific resources between various regions. Cloud computing performance heavily based on job scheduling algorithms that are utilized for queue waiting in modern scientific applications. The researchers are considered cloud computing a popular platform for new enforcements. These scheduling algorithms help in design efficient queue lists in cloud as well as they play vital role in reducing waiting for processing time in cloud computing. A novel job sche

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19

Chen, Jianlin, Yang Xu, and Zixuan Zheng. "Neural Network and Extended State Observer-Based Model Predictive Control for Smooth Braking at Preset Points in Autonomous Vehicles." Drones 8, no. 6 (2024): 273. http://dx.doi.org/10.3390/drones8060273.

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In this paper, we explore the problem of smooth braking at preset points in autonomous vehicles using model predictive control (MPC) with a receding horizon extended state observer (RHESO) and a neural network (NN). An NN-based modeling method is proposed to intuitively describe the relationship between vehicle speed and the vehicle controllers (brake and throttle), and establish a dynamic model of autonomous vehicles. A sufficient condition is put forward to guarantee the convergence of the proposed NN. Furthermore, a composite MPC strategy based on RHESO is designed, which optimizes a given

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20

Hu, Yahui, Jiaqi Yan, Ertai Cao, Yimeng Yu, Haiming Tian, and Heyuan Huang. "Approach and Landing Energy Prediction Based on a Long Short-Term Memory Model." Aerospace 11, no. 3 (2024): 226. http://dx.doi.org/10.3390/aerospace11030226.

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The statistical analysis of civil aircraft accidents reveals that the highest incidence of mishaps occurs during the approach and landing stages. Predominantly, these accidents are marked by abnormal energy states, leading to critical situations like stalling and heavy landings. Therefore, it is of great significance to accurately predict the aircraft energy state in the approach and landing stages to ensure a safe landing. In this study, a deep learning method based on time sequence data for the prediction of the aircraft approach and landing energy states is proposed. Firstly, by conducting

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21

Sabikan, Sulaiman Bin, Nawawi S. W, and NAA Aziz. "Modelling of time-to collision for unmanned aerial vehicle using particles swarm optimization." IAES International Journal of Artificial Intelligence (IJ-AI) 9, no. 3 (2020): 488. http://dx.doi.org/10.11591/ijai.v9.i3.pp488-496.

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A method for the development of Time-to-Collision (TTC) mathematical model for outdoor Unmanned Aerial Vehicle (UAV) using Particles Swarm Optimization (PSO), are presented. TTC is the time required for a UAV either to collide with any static obstacle or completely stop without applying any braking control system when the throttle is fully released. This model provides predictions of time before UAV will collide with the obstacle in the same path based on their parameter, for instance, current speed and payload. However, this paper focus on the methodology of the implementation of PSO to devel

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Sulaiman, bin Sabikan, S. W. Nawawi., and A. A. Aziz N. "Modelling of time-to collision for unmanned aerial vehicle using particles swarm optimization." International Journal of Artificial Intelligence (IJ-AI) 9, no. 3 (2020): 488–96. https://doi.org/10.11591/ijai.v9.i3.pp488-496.

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A method for the development of Time-to-Collision (TTC) mathematical model for outdoor Unmanned Aerial Vehicle (UAV) using Particles Swarm Optimization (PSO), are presented. TTC is the time required for a UAV either to collide with any static obstacle or completely stop without applying any braking control system when the throttle is fully released. This model provides predictions of time before UAV will collide with the obstacle in the same path based on their parameter, for instance, current speed and payload. However, this paper focus on the methodology of the implementation of PSO to devel

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23

Cha, Jihyoung, Erik Andersson, and Alexis Bohlin. "A Numerical Approach to Optimize the Design of a Pintle Injector for LOX/GCH4 Liquid-Propellant Rocket Engine." Aerospace 10, no. 7 (2023): 582. http://dx.doi.org/10.3390/aerospace10070582.

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This study presents an optimal design approach of a pintle injector for a deep throttlable liquid-propellant rocket engine (LPRE). Even though the pintle injector is used in rocket engines, it has become more important since reusable launch vehicles (RLVs) recently became a trend due to their economic and environmental benefits. However, since many variables must be determined to design a pintle injector, optimizing the pintle injector design is complicated. For this, we design a pintle injector to optimize the performance parameters; the spray angle, vaporization distance, and Sauter mean dia

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24

Lee, Jin Woong, Su Chul Kim, Jooseon Oh, et al. "Engine Speed Control System for Improving the Fuel Efficiency of Agricultural Tractors for Plowing Operations." Applied Sciences 9, no. 18 (2019): 3898. http://dx.doi.org/10.3390/app9183898.

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This study was conducted to develop a load-sensitive engine speed control system to maximize the fuel efficiency of an agricultural tractor. The engine speed controller was developed through a model-based design approach using a tractor simulation model. The simulated engine speed and torque values were measured with an average error range of 1.4–4.9% compared to results obtained from field experiments. Using the tractor model, the gain parameters of the proportional–integral (PI) controller were optimized under the step, ramp, and actual load conditions. The simulation results using the actua

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25

Yuan, Rong Di, and Quan Quan Du. "A Real-Time Model of Crush Natural Gas Turbo Engine." Applied Mechanics and Materials 58-60 (June 2011): 2511–16. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.2511.

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A new approach is presented in this paper in which a Crush Natural Gas (CNG) Turbo Engine model based on Mean Value Model and transient dynamics are included. The model could simulate engine speed, torque, dynamic load, electronic throttle, turbo, temperature and emission conditions. The model was downloaded and run in a HIL platform joint with Labview and a CNG engine ECU. Simulation results indicate that it acquires good balance between Real-time response and dynamic accuracy, besides good comprehensive running status parameters including dynamic, mechanic, thermo and combustion. The model m

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26

Gibergans-Báguena, José, Pablo Buenestado, Gisela Pujol-Vázquez, and Leonardo Acho. "A Proportional Digital Controller to Monitor Load Variation in Wind Turbine Systems." Energies 15, no. 2 (2022): 568. http://dx.doi.org/10.3390/en15020568.

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Monitoring the variation of the loading blades is fundamental due to its importance in the behavior of the wind turbine system. Blade performance can be affected by different loads that alter energy conversion efficiency and cause potential safety hazards. An example of this is icing on the blades. Therefore, the main objective of this work is to propose a proportional digital controller capable of detecting load variations in wind turbine blades together with a fault detection method. An experimental platform is then built to experimentally validate the main contribution of the article. This

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27

Xie, Fangwei, Erming Ding, Rui Xuan, Xinxing Zhang, Yixian Feng, and Jie Zhu. "Influence rules of geometric parameters on deformation of valve slices in valve-controlled adjustable damping shock absorber." International Journal of Structural Integrity 9, no. 1 (2018): 107–18. http://dx.doi.org/10.1108/ijsi-04-2017-0025.

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Purpose The purpose of this paper is to study the influence rules of geometric parameters on deformation of valve slices. Design/methodology/approach Based on the theory of flexural deformation of elastic thin slice, differential functions of deformation for both single and multi-slices are given and derived in detail. Furthermore, the effects of geometric dimensions on deformation are analyzed particularly by using Matlab/simulink. Findings The results indicated that the deformation decreases with the increment of fixed ring radius ra, slice thickness h, and its number n. Meanwhile, the defor

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28

Acho, Leonardo. "A Proportional Plus a Hysteretic Term Control Design: A Throttle Experimental Emulation to Wind Turbines Pitch Control." Energies 12, no. 10 (2019): 1961. http://dx.doi.org/10.3390/en12101961.

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Pitch control is a relevant issue in wind turbines to properly operate the angle of the blades. Therefore, this control system pitches the blades usually a few degrees every time the wind changes in order to keep the rotor blades at the required angle thus controlling the rotational speed of the turbine. All the same time, the control of the pitch angle is not easy due to the system behavior being highly nonlinear. Consequently, the main objective of this paper is to depict an easy to implement control design based on a proportional controller and a hysteretic term to an emulator pitch control

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29

Ottaviani, Marco, Luca Giammichele, and Renato Ricci. "Design, Assembly and Testing of a Mobile Laboratory Based on a VTOL Scale Motorglider." Tecnica Italiana-Italian Journal of Engineering Science 65, no. 2-4 (2021): 414–21. http://dx.doi.org/10.18280/ti-ijes.652-440.

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The objective of this paper is to explain the design steps and performance analysis of a vertical take-off and landing (VTOL) unmanned air vehicle (UAV) based on a Pilatus B4 glider scale model. Energy consumption, forces and thrust analyses are carry out to determinate the perfect match between low take-off weight and high aerodynamic performance. As a first approach a complete analysis of glider aerodynamic performances are settle to understand and design a proper support for VTOL conversion. Longitudinal static stability is fulfilled by evaluating the center of gravity location with respect

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Lim, Ducsun, Wooyeob Lee, Won-Tae Kim, and Inwhee Joe. "DRL-OS: A Deep Reinforcement Learning-Based Offloading Scheduler in Mobile Edge Computing." Sensors 22, no. 23 (2022): 9212. http://dx.doi.org/10.3390/s22239212.

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Hardware bottlenecks can throttle smart device (SD) performance when executing computation-intensive and delay-sensitive applications. Hence, task offloading can be used to transfer computation-intensive tasks to an external server or processor in Mobile Edge Computing. However, in this approach, the offloaded task can be useless when a process is significantly delayed or a deadline has expired. Due to the uncertain task processing via offloading, it is challenging for each SD to determine its offloading decision (whether to local or remote and drop). This study proposes a deep-reinforcement-l

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Beringer, Dennis B. "Issues in Using Off-the-Shelf Pc-Based Flight Simulation for Research and Training: Historical Perspective, Current Solutions and Emerging Technologies." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 38, no. 1 (1994): 90–94. http://dx.doi.org/10.1177/154193129403800117.

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Flight simulation has historically been an expensive proposition, particularly if out-the-window views were desired. Advances in computer technology have allowed a modular, off-the-shelf flight simulation (based on 80486 processors) to be assembled that has been adapted, with minimal effort, for conducting general-aviation research. This simulation includes variable flight instrumentation, forward, 45 and 90 degree left external world views, and a map display. Control inputs are provided by high-fidelity analog controls (e.g., damped and self-centering yoke, high-performance throttle quadrant,

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Trukhanov, K. A. "The use of hydraulic communication channel in technical systems." Izvestiya MGTU MAMI 11, no. 2 (2017): 54–63. http://dx.doi.org/10.17816/2074-0530-66912.

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When developing technological systems, it becomes necessary to transmit information over significant distances without the use of traditional means of communication, because they can not be used, for example, in the field of geonavigation when drilling inclined / horizontal wells. One of the possible channels for transmitting information in this area is the hydraulic communication channel (HCC). Therefore, at present, the task of developing an effective method and approach for transmitting information on the HCC becomes urgent. The purpose of this work was to create a mathematical model of the

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33

Sazgar, Hadi, Shahram Azadi, Reza Kazemi, and Ali Keymasi Khalaji. "Integrated longitudinal and lateral guidance of vehicles in critical high speed manoeuvres." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 233, no. 4 (2019): 994–1013. http://dx.doi.org/10.1177/1464419319847916.

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One of the most important and conventional manoeuvres, that is not easy to even skilled drivers, is the high-speed critical lane change on the highways. The main contribution of this study is the development of an integrated longitudinal and lateral guidance algorithm for these manoeuvres. This algorithm consists of two parts: the trajectory planning and the integrated control. In the first part, taking into account the position of the target vehicle for different accelerations, several trajectories are produced. Next, considering the dynamic capabilities of the vehicle, the most appropriate t

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Bozza, Fabio, Vincenzo De Bellis, and Luigi Teodosio. "A numerical procedure for the calibration of a turbocharged spark-ignition variable valve actuation engine at part load." International Journal of Engine Research 18, no. 8 (2016): 810–23. http://dx.doi.org/10.1177/1468087416674653.

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Referring to spark-ignition engines, the downsizing, coupled to turbocharging and variable valve actuation systems are very common solutions to reduce the brake-specific fuel consumption at low-medium brake mean effective pressure. However, the adoption of such solutions increases the complexity of engine control and management because of the additional degrees of freedom, and hence results in a longer calibration time and higher experimental efforts. In this work, a twin-cylinder turbocharged variable valve actuation spark-ignition engine is numerically investigated by a one-dimensional model

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Lu, Xiao-Jie, Hong-Ya Tuo, and Zhong-Liang Jing. "Study on Terrain Awareness and Warning System Envelope Based on Pilot Reaction Model." Journal of Computational and Theoretical Nanoscience 13, no. 10 (2016): 6867–71. http://dx.doi.org/10.1166/jctn.2016.5639.

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To solve the problem of envelope threshold for Terrain Awareness and Warning System (TAWS), this approach builds a pilot reaction model which contains two models. Pilot reaction model is built through combining the pilot delay time model and the after-alert-operation model. Warning envelope which meets the criterion is acquired through simulations using the pilot reaction model. In the discussion part, three pilot reaction elements, joystick operation speed, pilot delay and throttle operation speed, are chosen for influence analysis on TAWS warning envelope. The root-mean-square error between

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Khanzada, Feeza Khan, Elahe Delavari, Woojin Jeong, Young Seek Cho, and Jaerock Kwon. "Comparative Study on Simulated Outdoor Navigation for Agricultural Robots." Sensors 24, no. 8 (2024): 2487. http://dx.doi.org/10.3390/s24082487.

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This research presents a comprehensive comparative analysis of SLAM algorithms and Deep Neural Network (DNN)-based Behavior Cloning (BC) navigation in outdoor agricultural environments. The study categorizes SLAM algorithms into laser-based and vision-based approaches, addressing the specific challenges posed by uneven terrain and the similarity between aisles in an orchard farm. The DNN-based BC navigation technique proves efficient, exhibiting reduced human intervention and providing a viable alternative for agricultural navigation. Despite the DNN-based BC navigation approach taking more ti

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Titova, A. V., and A. I. Karpov. "Experience in application of the FlowVision software package for the prediction of the hydropneumatic suspensions parameters of heavy-duty vehicles." Himičeskaâ fizika i mezoskopiâ 27, no. 1 (2025): 94–103. https://doi.org/10.62669/17270227.2025.1.10.

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The results of the algorithm development for the prediction of dynamic parameters of hydropneumatic suspension of heavy-duty vehicles have been presented. The computational technique employs the proposed combined approach based on the joint consideration of non-dimensional statement for dynamic characteristics of overall suspension system and axisymmetric non-stationary Navier-Stokes equations for the viscous fluid motion inside the working capacity. The Navier-Stokes equations are solved by using the capabilities of the FlowVision software package. The solutions of both statements are coupled

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Lin, Peng, Cong Wang, and Min Wang. "Bifurcation Predication in Axial Compressors with Nonuniform Inflow via Deterministic Learning." International Journal of Bifurcation and Chaos 27, no. 10 (2017): 1750159. http://dx.doi.org/10.1142/s0218127417501590.

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The nonlinear dynamics of fluid instabilities such as rotating stall and surge in axial compressors are typically modeled as subcritical Hopf bifurcations with hysteresis. The bifurcation prediction provides an effective approach to avoid the occurrence of compressor’s instability. In this paper, based on a fluid dynamic model developed recently, a stall precursor detection approach employing deterministic learning (DL) is proposed for bifurcation predication in axial compressors with nonuniform inflow. The stall precursor near the bifurcation can be obtained as the throttle area parameter app

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Frank, Daniel, Stefan Wazlawik, Samara Brandao de Almeida, Christiane Bauer, and Caroline Willich. "Model-Based Development of Control Strategies for a Fuel Cell Air Supply System and Experimental Verification at Flight-Relevant Conditions." ECS Meeting Abstracts MA2024-02, no. 26 (2024): 2059. https://doi.org/10.1149/ma2024-02262059mtgabs.

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The performance of hydrogen PEM fuel cell systems can be optimized by means of pressurization of the cathode air, especially in aviation, where at in-flight conditions the pressure of the ambient air is significantly lower as at on-ground conditions. To provide the inlet air at optimal conditions (p, T, rH) during flight, an air supply system is required and in an all-electric aircraft the compression should happen by means of an electric centrifugal compressor. A challenge for the operation of a pressurised fuel cell system at high altitudes is the control of the compression system. Any unsta

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Sun, Zonghua, Liaoni Wu, and Yancheng You. "Automatic Landing System Design for Unmanned Fixed-Wing Vehicles via Multivariable Active Disturbance Rejection Control." International Journal of Aerospace Engineering 2023 (September 9, 2023): 1–18. http://dx.doi.org/10.1155/2023/9395447.

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Landing control of unmanned aerial vehicles (UAVs) is challenging because of the strong nonlinear dynamics, multivariable, model uncertainties, wind variations, and sensor noise. Motivated by this fact, this paper investigates an automatic landing system (ALS) that includes trajectory generation and guidance law for the first flight test of a turbine-based combined cycle technology demonstrator. Specifically, the control scheme increases the original model’s order to generate a reasonable monotone-decreasing throttle reference flare trajectory by the pseudospectral method. Subsequently, the gu

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Alsuwian, Turki, Muhammad Sajid Iqbal, Arslan Ahmed Amin, Muhammad Bilal Qadir, Saleh Almasabi, and Mohammed Jalalah. "A Comparative Study of Design of Active Fault-Tolerant Control System for Air–Fuel Ratio Control of Internal Combustion Engine Using Particle Swarm Optimization, Genetic Algorithm, and Nonlinear Regression-Based Observer Model." Applied Sciences 12, no. 15 (2022): 7841. http://dx.doi.org/10.3390/app12157841.

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In this article, three distinct strategies for designing an Active Fault-Tolerant Control System (AFTCS) for Air-Fuel Ratio (AFR) control of an Internal Combustion (IC) engine in a process plant to avoid engine shutdown, are presented. The proposed AFTCS employs a Genetic Algorithm (GA), Particle Swarm Optimization (PSO), and a Nonlinear Regression (NLR)-based observer model in the Fault Detection and Isolation (FDI) unit for analytical redundancy. A comparison between these three proposed techniques is carried out to determine the least expensive and most accurate approach. The results show t

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Du, Qiuying, Mingzhong Li, Chenwei Liu, Zhifeng Bai, Chenru Zhou, and Xiangyu Wang. "A Numerical Simulation Approach for Superheated Steam Flow during Multipoint Steam Injection in Horizontal Well." Geofluids 2024 (January 19, 2024): 1–9. http://dx.doi.org/10.1155/2024/4572483.

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Superheated steam flow during multipoint steam injection technology has a good effect on improving the steam absorption profile of heavy oil thermal recovery wells, enhancing the production degree of horizontal section of thermal recovery wells, and enhancing oil recovery. Based on the structure of multipoint steam injection horizontal string, considering the characteristics of variable mass flow, pressure drop of steam-liquid two-phase flow, and throttling pressure difference of steam injection valve in the process of steam injection, this paper establishes the calculation model of various pa

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S.K., Sreekala, and Thirumalini S. "Effect of cage configurations on flow characteristics of globe valves." World Journal of Engineering 13, no. 1 (2016): 61–65. http://dx.doi.org/10.1108/wje-02-2016-007.

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Purpose Globe valves have good throttling ability, which permits its use in regulating flows. This paper aims to understand in detail the globe valve with different cage configurations and its impact on the flow characteristics that was carried out. Design/methodology/approach The computational study was carried out using FLUENT, a finite volume-based numerical code. Grid sensitivity tests were done and the results were validated experimentally. The effect of cage configuration on flow characteristics and valve coefficient was studied and optimised. Findings Valve coefficient was found to be d

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Rahul Sharma and Sharad Chaudhary. "Performance Analysis of Two-Phase Constant Pressure Ejector Used in Ejector Expansion Refrigeration System (EERS)." International Research Journal on Advanced Engineering and Management (IRJAEM) 3, no. 06 (2025): 2218–23. https://doi.org/10.47392/irjaem.2025.0350.

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As the urgency to reduce high-grade energy consumption grows, it is crucial to investigate innovative alternatives to energy-intensive technologies like vapor compression refrigeration. One promising approach is the integration of a two-phase ejector in place of the traditional throttle valve, which can significantly lower power usage in standard vapor compression refrigeration systems. This study focuses on designing a constant-pressure two-phase flow ejector and assessing the performance of an ejector expansion refrigeration system using R134a as the refrigerant. To optimize performance, a s

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Грызунов, А. В., И. И. Верлока, А. Б. Капранова, and Е. Ф. Скурыгин. "MODERN ANTI-CAVITATION SOLUTIONS VARIETIES ANALYSIS IN CONTROL VALVE DESIGNS." Южно-Сибирский научный вестник, no. 3(55) (June 30, 2024): 223–34. http://dx.doi.org/10.25699/sssb.2024.55.3.030.

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Проблема обеспеченияпроходной способности регулирующей арматуры регламентным значениям актуальна для многих химических производств, в том числе нефтеперерабатывающего характера. Достижение эффективных условий работы клапанов связано или с эффективным выбором параметров процесса дросселирования потоков рабочей среды для имеющихся установок, или совершенствованием / модернизацией самих конструкций регулирующей арматуры. Для успешного проектирования данных устройств с целью эксплуатации в нефтегазовой отрасли требуется выявление значимых факторов, влияющих на борьбу с кавитационными эффектами в и

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Spender, J. C., and Jeroen Kraaijenbrink. "The Paradox of Strategizing: Embracing Managerial Agency without Throttling it." Journal of Business Strategy Finance and Management 04, no. 01 (2022): 12–37. http://dx.doi.org/10.12944/jbsfm.04.01.03.

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Strategizing implies making agentic choices in some middle ground between un-analyzable free will and agency-denying determinism. Paradoxically, neither view can capture the strategist’s situation or process. So how are strategy theorists approach agency? In our opening sections, we review the mainstream literature and find seven main arguments or tracks. Five, by improving methodological accuracy and reducing variance, effectively throttle or deny the strategist’s agency. The two other tracks offer agency an ontological or epistemological place in the analysis but underplay the synthetic natu

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Franchek, Matthew A., Patrick J. Buehler, and Imad Makki. "Intake Air Path Diagnostics for Internal Combustion Engines." Journal of Dynamic Systems, Measurement, and Control 129, no. 1 (2006): 32–40. http://dx.doi.org/10.1115/1.2397150.

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Presented is the detection, isolation, and estimation of faults that occur in the intake air path of internal combustion engines during steady state operation. The proposed diagnostic approach is based on a static air path model, which is adapted online such that the model output matches the measured output during steady state conditions. The resulting changes in the model coefficients create a vector whose magnitude and direction are used for fault detection and isolation. Fault estimation is realized by analyzing the residual between the actual sensor measurement and the output of the origin

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Krepelka, Michal, and Jiri Vrany. "Synthesizing Vehicle Speed-Related Features with Neural Networks." Vehicles 5, no. 3 (2023): 732–43. http://dx.doi.org/10.3390/vehicles5030040.

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In today’s automotive industry, digital technology trends such as Big Data, Digital Twin, and Hardware-in-the-loop simulations using synthetic data offer opportunities that have the potential to transform the entire industry towards being more software-oriented and thus more effective and environmentally friendly. In this paper, we propose generative models to synthesize car features related to vehicle speed: brake pressure, percentage of the pressed throttle pedal, engaged gear, and engine RPM. Synthetic data are essential to digitize Hardware-in-the-loop integration testing of the vehicle’s

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Yin, Shutong, Chunlin Yang, Ibna Kawsar, Haifeng Du, and Yongjun Pan. "Longitudinal Predictive Control for Vehicle-Following Collision Avoidance in Autonomous Driving Considering Distance and Acceleration Compensation." Sensors 22, no. 19 (2022): 7395. http://dx.doi.org/10.3390/s22197395.

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In response to the widespread adoption of vehicle-following systems in autonomous applications, the demand for collision warning to enable safer functionalities is increasing. This study provides an approach for automated vehicle guidance to follow the preceding vehicles longitudinally and puts emphasis on the performance of collision avoidance. The safety distance model is established, which contains a distance compensation algorithm to deal with the special case on curved roads. By introducing the algorithm of velocity and distance prediction, the collision risks are detected and measured in

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Kumar, M. Naveen, Vishal Jagota, and Mohammad Shabaz. "Retrospection of the Optimization Model for Designing the Power Train of a Formula Student Race Car." Scientific Programming 2021 (November 29, 2021): 1–9. http://dx.doi.org/10.1155/2021/9465702.

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This article describes the power train design specifics in Formula student race vehicles used in the famed SAE India championship. To facilitate the physical validation of the design of the power train system of a formula student race car category vehicle engine of 610 cc displacement bike engine (KTM 390 model), a detailed design has been proposed with an approach of easing manufacturing and assembly along with full-scale prototype manufacturing. Many procedures must be followed while selecting a power train, such as engine displacement, fuel type, cooling type, throttle actuation, and creati

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