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Energy-exergy and exergoeconomic analysis of a hydrogen-enriched spark-ignition engine fueled with premium gasoline-ethanol blends

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International Journal of Hydrogen Energy 2025年 137卷 689-709页

作者： Kumbhar, Sujit Khot, Sanjay Bhapkar, Udaysinh Patil, Vishal Singh, Paramvir Husainy, Avesahemad Department of Technology Shivaji University Kolhapur India Automation and Robotics Department Sharad Institute of Technology College of Engineering Yadrav Ichalkaranji India Mechanical Engineering Department Sharad Institute of Technology College of Engineering Yadrav Ichalkaranji India Kolhapur India Department of Mechanical Engineering National Institute of Technology Agartala India

Hydrogen is a promising alternative fuel for internal combustion engines due to its renewable nature, low emissions, and superior combustion performance. In the current research, the effects of hydrogen enrichment were studied on the thermodynamic analysis of spark ignition engines using premium gasoline-ethanol blends. The blends were prepared with a partial addition of ethanol (10 % and 20 % by volume) in premium gasoline and hydrogen was injected during combustion for 2, 3, 4, and 5 μs. The testing was done on the varying engine speeds at 1500, 2000, 2500, 3000, and 3500 rpm. Energy and exergy analyses, entropy generation, and sustainability index were assessed for different fuel blends and contrasted with premium gasoline. The brake thermal efficiency and exergy efficiency were found maximum at 2500 rpm engine speed for all tested fuel blends. The BTE of E10H5 fuel blend is 18 % higher than premium gasoline and the exhaust gas energy of the E10H5 fuel blend is 12 % higher than premium gasoline at 2500 rpm. Among all tested fuel blends, the E10H5 fuel blend showed prominent results. The present experimental investigation focuses on energy-exergy analyses of premium gasoline-ethanol blends with enriched hydrogen at different injection times to assess the potential fuel blends. These blends will help to reduce dependency on conventional fossil fuels by enriching hydrogen without modification of the engine. © 2025 Hydrogen Energy Publications LLC

关键词： Hydrogen engines

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Global Localization of Mobile Robots Based on Dynamic Partitioning Global Descriptor

Global Localization of Mobile Robots Based on Dynamic Partit...

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2024 IEEE International Conference on Real-Time Computing and robotics, RCAR 2024

作者： Xue, Shiyun Wang, Jingchuan Xiao, Peng Guo, Rui Shanghai Jiao Tong University Institute of Medical Robotics Department of Automation China State Grid Intelligence Technology CO. LTD China

ISBN: (纸本)9798350372601

Global localization is a challenging problem as it is difficult for a mobile robot to obtain the current pose without the prior pose. It relies on prior environmental maps and sensor information. When the robot is in an environment with similar features or sparse features, using existing global localization methods may cause localization failure. In order to solve the localization failure of mobile robots in both indoor and outdoor environments, this paper proposes a global localization system based on dynamic partition global descriptors for 3D point cloud maps. The system is evaluated in indoor corridors and outdoor campus environments. The results show that dynamic partition global descriptors can improve the overall success rate of localization, which reaches more than 90% in different scenarios. The method effectively balances the accuracy and speed of global localization, optimizing the global localization system. © 2024 IEEE.

关键词： Mobile robots

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Integrated DOB-Based Approach for Admittance Control of an Industrial Robot 23

Integrated DOB-Based Approach for Admittance Control of an I...

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23rd International Conference on Control, automation and Systems, ICCAS 2023

作者： Samuel, Kangwagye Haninger, Kevin Oh, Sehoon Dgist Department of Robotics and Mechatronics Engineering Daegu42988 Korea Republic of Fraunhofer Ipk Department of Automation Berlin10589 Germany

ISBN: (纸本)9788993215274

Admittance control can improve robot performance and robustness in interactive tasks, but is still limited by stability when implemented on low-admittance hardware, such as position-controlled industrial robots. This limits applications which require the payload, reach, or positioning accuracy. While the idealized reference admittance behavior would be stable with any passive environment, real robots can be unstable, especially with high-stiffness environments. Thus, instability comes from deviation from the ideal reference model, due to either inner-loop bandwidth, time-delay, or other model error. To improve accuracy of rendered dynamics and reduce contact forces, a novel integrated disturbance observer-based admittance control method which is implemented on a position/velocity-controlled industrial robot in task space is proposed. The multisensor information is integrated to estimate and cancel the disturbances, outside the position/velocity control loop, all in task space. Experiments on the actual robot show that the proposed method is able to improve accuracy and reduce contact forces even at higher admittance. © 2023 ICROS.

关键词： Industrial robots

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Design and Development of IoT Based Weather and Air Quality Monitoring Station

Design and Development of IoT Based Weather and Air Quality ...

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2023 International Conference on robotics and automation in Industry, ICRAI 2023

作者： Haris, Muhammad Ubaid, Bilal Bibi, Uzma Said, Ameer Us Saqib, Syed Najm Khan, Shahbaz Tufail, Muhammad Advanced Robotics and Automation Lab National Center of Robotics and Automation Peshawar Pakistan University of Engineering and Technology Department of Mechatronics Engineering Peshawar Pakistan Institute of Manufacturing Engineering Management University of Engineering and Applied Sciences Swat Swat Pakistan

ISBN: (纸本)9781665464727

This paper presents the Design and Development of IoT Based Weather and Air Quality Monitoring stations that provide weather-related information for agriculture, and aviation climate forecasting purposes. The prototype is made up of an outdoor unit that consistently monitors numerous climatic variables such as temperature, humidity, barometric pressure, wind speed, wind direction, rainfall, and air quality using sensors with high accuracy. The air quality index(AQI) is also calculated using the sensors values which tell us whether the atmosphere is safe or polluted. ESP32(Microcontroller) which has a WiFi module is used to gather and send the sensor data through the Internet of things (IoT) to a ThingSpeak channel (IoT cloud), an internet platform where the data is saved, analyzed and read the data remotely. The weather station makes use of photovoltaic power and a rechargeable lead-acid battery to sustain the system. This paper also discusses the obvious strengths and shortcomings of the system and suggests plausible upgrades to assist the system in obtaining higher and long-term performance. © 2023 IEEE.

关键词： Internet of things

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Real-Time Operating System for Multitasking Control in the robotics and automation Industry

Real-Time Operating System for Multitasking Control in the R...

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2023 International Conference on Intelligent Data Communication Technologies and Internet of Things, IDCIoT 2023

作者： Sayyad, Javed Jatti, Ashwini Attarde, Khush Ramesh, B.T. Deokar, Shubhangi Robotics and Automation Department Lavale Maharashtra Pune India Computer Science and Engineering Lavale Maharashtra Pune India

ISBN: (纸本)9781665474511

Real-Time Operating System (RTOS) is an Operating System (OS) that does a task in a constrained time. The RTOS is integrated with the microprocessor or microcontroller for specialized applications where the time-bound completion of the task is very much substantial. ESP32 is a microcontroller that comes with a package of advantageous and suitable features for RTOS. The ability of equipment like motors, sensors, and actuators to multitask is critical in the robotics and automation (R&A) industry. In industries, a dedicated/centralized system allocated for a particular activity is not economically feasible;yet, when performing several tasks, some delay or lag is introduced in the task. Consequently, the proposed solution for industrial multitasking is cost-effective and efficient. The RTOS is suitable for machines constrained to do painstaking work, like a robotic arm or CNC drilling. In the R&A industry, a hardware interruption is often critical for an emergency, which may also be accomplished using RTOS. In such applications, implementing a software timer is also essential to delay a task for a period of time. Stepper and servo motors are widely employed in the R&A industries for various applications. This article presents the multitasking of four stepper motors and the introduction of a software timer, which will be developed when the stepper motor multitasking is implemented. For multitasking, the FreeRTOS library will be utilized. © 2023 IEEE.

关键词： Microcontrollers

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Wear behavior of A356/ Al2O3/MoS2 hybrid nanocomposites

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Materials Today: Proceedings 2022年 54卷 409-414页

作者： Ajay Kumar, K. Mallikarjuna, C. Department of Mechanical Engineering MIT Thandavapura Mysore571302 India Department of Industrial Automation and robotics PG studies VTU Mysore 570029 India

A356 composites with alumina and molybdenum disulfide nanoparticles are a distinct category of engineered materials developed for tribological use. This evolution has led to an attempt to investigate the microstructure and wear behavior of A356 hybrid nanocomposites reinforced with nano Al2O3 (0.5, 1, and 1.5 wt% of Al2O3) and nano MoS2 (0.5 wt% of MoS2) is fabricated by stir casting technique. Wear behavior of A356/ Al2O3/ MoS2 nanocomposites was tested by using the pin on disc equipment. The sliding wear tests were carried out at 10–50 N normal load insteps of 10 N, 2 m/s sliding velocity and 1000–5000 m sliding distance insteps of 1000 m/s. Results have shown that the increase of alumina and the addition of MoS2 nano particles have a positive impact on the improvement of tribological properties of the hybrid nanocomposites. The coefficient of friction and wear rate of hybrid nanocomposites are reduced with the addition of Al2O3 and a solid lubricant MoS2 particle. © 2021

关键词： Wear of materials

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Investigations on the Design and Simulation of Smart Irrigation Robot for Nurseries 3

Investigations on the Design and Simulation of Smart Irrigat...

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3rd International Conference on Advances in Computing, Communication, Embedded and Secure Systems, ACCESS 2023

作者： Abhiram, B. Jha, Swati Sai Prasad, Y. Yogendra Dhanraj, Joshuva Arockia Ramkumar, V. Hindustan Institute of Technology and Science Centre for Automation & Robotics Department of Mechatronics Engineering Tamil Nadu Chennai India

ISBN: (纸本)9798350346169

The irrigation systems in nurseries can be the cause of various water supply errors- ranging from lack of sufficient water supply to over-watering and imbalance in the water pH levels. Based on the statistics recorded by the department of agriculture and farmers welfare, we have conducted we concluded that the water supply management and plant life maintenance are the major problems. Considering all these real-time errors, we have designed a smart irrigation robot functioning on the inputs from a group of soil moisture sensors which helps eliminate the monotonous task of monitoring and keeping records of the change in soil moisture. © 2023 IEEE.

关键词： Irrigation

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Assessing Lower Limb Movement Performance in Elderly Individuals Using a Nanocomposite E-Textile Sensor 16

Assessing Lower Limb Movement Performance in Elderly Individ...

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16th IEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2023

作者： Zou, Xiaoyang Li, Xiaoting Xue, Jiaqi Chan, Colin Pak Yu Li, Ziqi Zhang, Jing Lai, King Wai Chiu City University of Hong Kong Centre for Robotics and Automation Department of Biomedical Engineering Hong Kong Hong Kong

ISBN: (纸本)9798350343700

The knee joint is one of the most important joints in our lower body, affecting humans' lower limb activities. For instance, the knee joint can even bear three to four times the human body's weight when running and climbing. The knee joint is prone to degenerative lesions for older people as they age, which significantly affects their daily lives. Therefore, long-term and real-time assessment of lower-limb motions in older people is crucial for their lower-limb health detection. In this work, we developed wearable knee sensors based on nanocomposite e-textile strain sensors for detecting knee joints' range of motion (ROM) while older people perform lower-limb activities. A total of ten features were extracted to characterize their STS performance by detecting their knee joint range of motion through normal speed and fast speed sit-to-stand (STS). The elderly subjects were grouped by their age, gender, and body mass index (BMI) to assess the relationship of these three parameters with the extracted features. As a result, the stability, ROM, and gender of elderly subjects while performing fast speed STS had a significant relationship with age and BMI (P © 2023 IEEE.

关键词： Nanocomposites

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Microstructure and mechanical properties of A356/Al2O3/MoS2 hybrid nanocomposites

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Materials Today: Proceedings 2022年 54卷 415-420页

作者： Ajay Kumar, K. Mallikarjuna, C. Department of Mechanical Engineering MIT Thandavapura Mysore571302 India Department of Industrial Automation and Robotics PG Studies VTU Mysore570029 India

The technology of hybrid reinforcements responds to the ever-increasing dynamic demand for services in industries such as automobile, transportation, marine, and aerospace because of its appealing properties like high conductivity, high ductility and light weight. At this level, a study has been conducted to evaluate the microstructure and mechanical characteristics such as tensile strength and hardness of A356 hybrid nanocomposites reinforced with nano Al2O3 (0.5, 1, and 1.5 wt% of Al2O3) and soft solid lubricant nano MoS2 (0.5 wt% of MoS2) using stir casting procedure. Microstructural analysis of A356 reinforced with nano Al2O3 and nano MoS2 hybrid composites was conducted using SEM and which reveals that particles are distributed uniformly in the A356 matrix. The hardness and tensile tests have showed that adding Al2O3 and MoS2 particles to the A356 matrix resulted in a nanocomposite with excellent mechanical characteristics. Theoretical and actual densities of cast composite materials are determined by the Rule of mixture method and Archimedes principle respectively. Actual density of cast composite material is lesser when compared to the theoretical density of the material. © 2021

关键词： Tensile strength

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Development of Automated Control System for Laboratory Reactoplast Casting Unit 4

Development of Automated Control System for Laboratory React...

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4th International Conference on Technology Enhanced Learning in Higher Education, TELE 2024

作者： Prokudin, German Kondratyev, Sergey Pikalov, Vladimir Volgograd State Technical University Department of Production Process Automation Volgograd Russia Lipetsk State Technical University Department of Automated Electric Drive and Robotics Lipetsk Russia

ISBN: (纸本)9798350353532

This paper presents the development and implementation of an automated control system for the technological process of casting reactoplastic products in a laboratory environment. The primary objective is to design an integrated control system and a comprehensive software suite to manage process parameters, enabling the use of various grades of reactoplastics efficiently. The development process involved creating a detailed electrical schematic and an operational algorithm for the equipment. Essential components were meticulously selected to construct a laboratory prototype, leading to the establishment of a reliable automated control system. Additionally, a sophisticated software suite was developed and registered with Rospatent, ensuring intellectual property protection. Extensive experimental casting trials were conducted, resulting in high-quality plastic part samples that demonstrate the system's effectiveness. The proposed system showcases significant advancements in improving the quality and efficiency of small-batch production of plastic components, highlighting its potential for broader industrial applications. © 2024 IEEE.

关键词： Plastic parts

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