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IEEE International Conference on engineering Technologies and Applied Sciences (ICETAS)

作者： Suha S. Husain Luay T. Rasheed Rawnaq A. Mahmod Ekhlas K. Hamza Noaman M. Noaman Amjad Jaleel Humaidi Department of Construction and Projects University of Technology Baghdad Iraq Control and Systems Eng. Department University of Technology Baghdad Iraq Training & Energy Researches Office Ministry of Electricity Baghdad Iraq Department of Mechatronics Engineering University of Technology Bahrain Control and Systems Eng. Dept. University of Technology Iraq-Baghdad

In this study, a new control strategy is presented and proposed, which is the Robust Integral of the Sign of Error (RISE). The RISE control strategy is designed to track the airway pressure in the mechanical ventilate process. The respiratory model is designed by combining a blower hose model and a single compartmental lung system with nonlinear lung compliance. For comparison purposes, the Sliding Mode control (SMC) strategy is designed and compared to the proposed control mechanism. RISE controller generates a smooth function; therefore, RISE is able to avoid the chattering phenomenon caused by the discontinuous part of the SMC. In addition, RISE control provides better performance than SMC and fewer tracking error.

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An Approach to eye-brain-computer interface development

An Approach to eye-brain-computer interface development

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International Youth Conference on Radio Electronics, Electrical and Power engineering (REEPE)

作者： Leonid R. Kondaurov Ekaterina A. Baykova Alexander N. Dmitriev Elizaveta S. Boeva Ekaterina A. Romanova Nekoula Haddad Department of Biomedical Engineering Bauman Moscow State Technical University Moscow Russian Federation Department of Information Processing and Control Systems Bauman Moscow State Technical University Moscow Russian Federation

Existing brain-computer interface (BCI) technologies used to improve the quality of life or rehabilitation of patients with motor disorders have a number of drawbacks, such as recorded signal instability during long-term use due to habituation, as well as relatively low information transfer rate. A possible alternative is the use of hybrid BCIs, particularly those based on an eyetracker. However, their widespread distribution for home use application limits the cost of such a complex. This paper describes an approach to developing an eye-brain-computer interface prototype. To test the developed prototype of eye-brain-computer interface (EBCI) complex an experimental study was performed involving 3 healthy subjects with synchronous EEG and an eyetracker signal recording. Stimulus frequency and target stimulus coordinates were varied. Evoked potential P300 parameters and eyetracker spatial errors during fixations on the monitor's reference points, as well as EEG and eyetracker synchronization accuracy were evaluated. As a result, P300 of typical shape was identified in 3 subjects. It was concluded that it is possible to use EBCI and further modify the synchronization algorithm.

关键词： Power engineering Tracking Shape Prototypes Synchronous motors Electroencephalography Brain-computer interfaces

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Infrastructure-dependent ramp-metering control for METANET-s

Infrastructure-dependent ramp-metering control for METANET-s

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IEEE Conference on Decision and control

作者： Ayda Kamalifar Carlo Cenedese Michele Cucuzzella Antonella Ferrara Department of Electrical Computer Science and Biomedical Engineering University of Pavia Pavia Italy Department of Information Technology and Electrical Engineering ETH Zürich Zürich Switzerland Center for Systems and Control ENTEG Faculty of Science and Engineering (FSE) University of Groningen (UG) Nijenborgh 4 Groningen the Netherlands

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

In this paper, we propose a novel infrastructure-dependent ramp-metering control for the recently proposed METANET with service station (METANET-s) model, i.e., a second-order macroscopic traffic model that, compared to the classical METANET, incorporates the dynamics of service stations on highways. We study the effect of a ramp-metering control scheme on a highway stretch with a service station and show that it is capable of actively regulate internal traffic demand attempting to exit the service station via its on-ramp, on top of contributing to decrease the traffic congestion on the mainstream. In fact, the proposed control scheme effectively prevents the backlog of vehicles attempting to merge back onto the mainstream. This dynamic control mechanism is further endowed by a route guidance control strategy increasing the share of vehicles stopping at the service station during main-stream congestion periods, e.g. via incentives. The combined effect of our control schemes allows to take full advantage of the presence of service stations, reducing the overall traffic congestion. Simulation results demonstrate the effectiveness of the proposed control strategies.

关键词： Simulation Merging Numerical models Vehicle dynamics Traffic congestion

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Additively manufactured metallic biomaterials

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Bioactive Materials 2022年第9期7卷 214-249页

作者： Elham Davoodi Hossein Montazerian Anooshe Sadat Mirhakimi Masoud Zhianmanesh Osezua Ibhadode Shahriar Imani Shahabad Reza Esmaeilizadeh Einollah Sarikhani Sahar Toorandaz Shima ASarabi Rohollah Nasiri Yangzhi Zhu Javad Kadkhodapour Bingbing Li Ali Khademhosseini Ehsan Toyserkan Multi-Scale Additive Manufacturing(MSAM)Laboratory Mechanical and Mechatronics Engineering DepartmentUniversity of WaterlooWaterlooOntario N2L 3G1Canada Department of Bioengineering University of CaliforniaLos AngelesCalifornia 90095United States California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCalifornia 90095United States Terasaki Institute for Biomedical Innovation Los AngelesCalifornia 90024United States Department of Mechanical Engineering Isfahan University of TechnologyIsfahanIsfahan 84156-83111Iran School of Biomedical Engineering University of SydneySydneyNew South Wales 2006Australia Department of Nanoengineering Jacobs School of EngineeringUniversity of CaliforniaSan DiegoCalifornia 92093United States Mechanical and Aerospace Engineering Department University of CaliforniaLos AngelesCalifornia 90095United States Department of Mechanical Engineering Shahid Rajaee Teacher Training UniversityTehranTehran 16785-163Iran Institute for Materials Testing Materials Science and Strength of MaterialsUniversity of StuttgartStuttgart 70569Germany Department of Manufacturing Systems Engineering and Management California State UniversityNorthridgeCalifornia 91330United States

Metal additive manufacturing(AM)has led to an evolution in the design and fabrication of hard tissue substitutes,enabling personalized implants to address each patient’s specific *** addition,internal pore architectures integrated within additively manufactured scaffolds,have provided an opportunity to further develop and engineer functional implants for better tissue integration,and long-term *** this review,the latest advances in different aspects of the design and manufacturing of additively manufactured metallic biomaterials are *** introducing metal AM processes,biocompatible metals adapted for integration with AM machines are ***,we elaborate on the tools and approaches undertaken for the design of porous scaffold with engineered internal architecture including,topology optimization techniques,as well as unit cell patterns based on lattice networks,and triply periodic minimal ***,the new possibilities brought by the functionally gradient porous structures to meet the conflicting scaffold design requirements are thoroughly ***,the design constraints and physical characteristics of the additively manufactured constructs are reviewed in terms of input parameters such as design features and AM processing *** assess the proposed applications of additively manufactured implants for regeneration of different tissue types and the efforts made towards their clinical ***,we conclude the review with the emerging directions and perspectives for further development of AM in the medical industry.

关键词： Additive manufacturing Metal implant Porous scaffold Tissue engineering Biomaterials

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Pulsating Fluidic Sensor for Sensing of Location, Pressure and Contact Area

Pulsating Fluidic Sensor for Sensing of Location, Pressure a...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Joanna Jones Marco Pontin Dana D. Damian Department of Automatic Control and Systems Engineering Sheffield Biomedical Robotics Laboratory University of Sheffield United Kingdom Sheffield Robotics University of Sheffield UK Insigneo Institute for in Silico Medicine University of Sheffield UK

ISBN: (数字)9798350384574

ISBN: (纸本)9798350384581

Designing information-rich and space-efficient sensors is a key challenge for soft robotics, and crucial for the development of safe soft robots. Sensing and understanding the environmental interactions with a minimal footprint is especially important in the medical context, where portability and unhindered patient/user movement is a priority, to move towards personalized and decentralized healthcare solutions. In this work, a pulsating fluidic soft sensor (PFS) capable of determining location, pressure and contact area of press events is shown. The sensor relies on spatio-temporal resistance changes driven by a pulsating conductive fluid. The sensor demonstrates good repeatability and distinction of single and multiple press events, detecting single indents of sizes greater than 1 cm, forces larger than 2 N, and various locations across the sensor, as well as multiple indents spaced 2 cm apart. Furthermore, the sensor is demonstrated in two applications to detect foot placement and grip location. Overall, the sensor represents an improvement towards minimizing electronic hardware, and cost of the sensing solution, without sacrificing the richness of the sensing information in the field of soft fluidic sensors.

关键词： Presses Fluids Soft sensors Medical services Soft robotics Robot sensing systems Hardware

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Fabrication of helical flutes on the micro-drill surface by micro-EDM using composite disc foil electrodes

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International Journal of Advanced Manufacturing Technology 2025年第5期138卷 2357-2367页

作者： Xu, Bin Liu, Weitong Lian, Manqun Lei, Jianguo Wu, Xiaoyu Fu, Lianyu Zhao, Chunyang Zhang, Canbin Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control Engineering Shenzhen University Guangdong Shenzhen518060 China Shenzhen Jinzhou Precision Technology Corp Shenzhen518116 China State Key Laboratory of Ultra-Precision Machining Technology Department of Industrial and Systems Engineering The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong

Micro-drills are widely used in the micro-hole machining of printed circuit boards. Helical flutes, the core feature of micro-drills, play a crucial role in chip discharge. Precision grinding technology is commonly used for machining the helical flutes in micro-drills. Grinding is a contact machining technology that generates a grinding force during the process. When the diameter of the micro-drill is minimal (Φ ≤ 100 µm), the grinding force is extremely prone to cause deformation or even fracture of the micro-drill, leading to a decreased yield. To overcome the above problem, the paper proposed an approach to fabricate a helical flute structure on the surface of a micro-drill by micro electrical discharge machining (micro-EDM) using a beryllium-copper-tin composite disc foil electrode (CDFE). Micro-EDM, a type of non-contact machining, can effectively avoid the disadvantage of grinding the helical flute of the micro-drill. Through an orthogonal experiment, the effects of the rotation velocity of the CDFE, machining voltage, and pulse duration ratio on the machining quality of the helical flutes were analysed in detail. Finally, with 4000 r/min CDFE rotation velocity, 24 V machining voltage, 1 µs pulse duration and 3 µs pulse interval, a helical flute structure with a surface roughness Ra of 0.381 µm was successfully machined on the surface of a 70 µm diameter micro-drill. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2025.

关键词： Surface roughness

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Global solution to sensor network localization: A non-convex potential game approach and its distributed implementation

arXiv

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arXiv 2024年

作者： Xu, Gehui Chen, Guanpu Hong, Yiguang Fidan, Baris Parisini, Thomas Johansson, Karl H. Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Beijing100190 China The Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Sweden Digital Futures StockholmSE-10044 Sweden Department of Control Science and Engineering Tongji University Shanghai201804 China Shanghai Research Institute for Intelligent Autonomous Systems Shanghai201210 China The Department of Mechanical and Mechatronics Engineering University of Waterloo WaterlooONN2L 3G1 Canada The Department of Electrical and Electronic Engineering Imperial College London LondonSW7 2AZ United Kingdom The Department of Engineering and Architecture University of Trieste Trieste34127 Italy

Consider a sensor network consisting of both anchor and non-anchor nodes. We address the following sensor network localization (SNL) problem: given the physical locations of anchor nodes and relative measurements among all nodes, determine the locations of all non-anchor nodes. The solution to the SNL problem is challenging due to its inherent non-convexity. In this paper, the problem takes on the form of a multi-player nonconvex potential game in which canonical duality theory is used to define a complementary dual potential function. After showing the Nash equilibrium (NE) correspondent to the SNL solution, we provide a necessary and sufficient condition for a stationary point to coincide with the NE. An algorithm is proposed_ to reach the NE and shown to have convergence rate O(1/√k). With the aim of reducing the information exchange within a network, a distributed algorithm for NE seeking is implemented and its global convergence analysis is provided. Extensive simulations show the validity and effectiveness of the proposed approach to solve the SNL problem. Copyright © 2024, The Authors. All rights reserved.

关键词： Game theory

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An Estimation Perspective on Breathing Effort Disturbances in Mechanical Ventilation

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IFAC-PapersOnLine 2023年第2期56卷 8215-8220页

作者： Lars van de Kamp Bram Hunnekens Nathan van de Wouw Tom Oomen Demcon Advanced Mechatronics Best 5600 MB Eindhoven Netherlands. Department of Mechanical Engineering Eindhoven University of Technology 5612 AZ Eindhoven Netherlands Department of Civil Environmental and Geo-Engineering University of Minnesota Minneapolis MN 55455 USA Delft Center for Systems and Control Delft University of Technology 2628 CD Delft Netherlands

Estimation of relevant lung parameters and the breathing effort of a ventilated patient is essential to keep track of the patient's clinical condition. The aim of this paper is to investigate the major challenges of estimating the patient's condition with parametric models. The main method is a linear regression framework, where identifiability and persistence of excitation aspects are clearly unraveled. Different approaches for improving estimation accuracy are outlined. As an illustration, one of the solution strategies is implemented, which leads to accurate estimates of the breathing effort and relevant lung parameters.

关键词： mechanical ventilation linear regression parameter estimation respiratory systems system identification

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Investigating the dynamic memory effect of human drivers via ON-LSTM

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Science China(Information Sciences) 2020年第9期63卷 83-93页

作者： Shengzhe DAI Zhiheng LI Li LI Dongpu CAO Xingyuan DAI Yilun LIN Department of Automation Tsinghua University Shenzhen International Graduate School Tsinghua University Department of Mechanical and Mechatronics Engineering University of Waterloo State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of Sciences

It is a widely accepted view that considering the memory effects of historical information(driving operations) is beneficial for vehicle trajectory prediction models to improve prediction accuracy. However,many commonly used models(e.g., long short-term memory, LSTM) can only implicitly simulate memory effects, but lack effective mechanisms to capture memory effects from sequence data and estimate their effective time range(ETR). This shortage makes it hard to dynamically configure the most suitable length of used historical information according to the current driving behavior, which harms the good understanding of vehicle motion. To address this problem, we propose a modified trajectory prediction model based on ordered neuron LSTM(ON-LSTM). We demonstrate the feasibility of ETR estimation based on ON-LSTM and propose an ETR estimation method. We estimate the ETR of driving fluctuations and lane change operations on the NGSIM I-80 dataset. The experiment results prove that the proposed method can well capture the memory effects during trajectory prediction. Moreover, the estimated ETR values are in agreement with our intuitions.

关键词： driving behavior memory effect trajectory prediction historical information ON-LSTM

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On the Existence and Uniqueness of Steady State Solutions of a Class of Dynamic Hydraulic Networks via Actuator Placement

On the Existence and Uniqueness of Steady State Solutions of...

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IEEE Conference on Decision and control

作者： Mark Jeeninga Juan E. Machado Michele Cucuzzella Giacomo Como Jacquelien Scherpen Department of Automatic Control Lund University Lund Sweden Chair of Control Systems and Network Control Technology Faculty 3 Mechanical Engineering Electrical and Energy Systems Brandenburg University of Technology Cottbus - Senftenberg Cottbus Germany Department of Electrical Computer Science and Biomedical Engineering Univeristy of Pavia Pavia Italy Department of Mathematical Science “G.L. Lagrange” Politecnico di Torino Torino Italy Department of Automatic Control Lund University Faculty of Science and Engineering Jan C. Willems Center for Systems and Control ENTEG University of Groningen Groningen the Netherlands

In this paper, using tools from graph theory we provide verifiable necessary and sufficient conditions for the existence of a unique hydraulic equilibrium in district heating systems of meshed topology and containing multiple heat sources. Even though numerous publications have addressed the design of efficient algorithms for numerically finding hydraulic equilibria in the general context of water distribution networks, this is not the case for the analysis of existence and uniqueness. Moreover, most of the existing work dealing with these aspects exploit the equivalence between the nonlinear algebraic equations describing the hydraulic equilibria and the KKT conditions of a suitably defined nonlinear convex optimization problem. Differently, this paper proposes necessary and sufficient graph-theoretic conditions on the actuator placement for the existence and uniqueness of a hydraulic equilibrium, independent of the actuators' control objective. An example based on a representative district heating network is considered to illustrate the key aspects of our contribution, and an explicit formulation of the steady state solution is given for the case in which pressure drops through pipes are linear with respect to the flow rate.

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