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In traditional system designs for feedback structural control systems, the structure is assumed to be linear time invariant (LTI). However, extreme load events on the structure can damage the structure leading to violation of the time invariance assumption. This study proposes an online adaptive control strategy that tracks the time varying characteristics of a structural system with the optimal control...
The aim of this research is to expand the access of hands-on controls education at the undergraduate level with an affordable laboratory kit. A kit was assembled for around $130 while replicating the educational functionality of a typical station in an introductory controls laboratory. The kit consists of a Raspberry Pi, a DC motor, and various circuits required for the lab exercises. Details of each...
In this paper we propose an autotuning methodology for a symmetrical send-on-delta PI controller for integral processes. In particular, a technique already proposed for self-regulating processes is extended to deal with non self-regulating processes. It is based on the estimation of the parameters of an integrator-plus-dead-time transfer function by means of a single relay-feedback experiment where...
Recent rapid development of information and communication technology enables cloud computing to be utilized in many engineering applications. A state estimation of a large-scale system consisting of several subsystems needs a large amount of computational resources. So, this paper proposes an observer that estimates all states of the system using cloud computing. We will call such an observer a cloud-assisted...
Energy efficiency of buildings has been identified as a core element in facing the climate change and the scarcity of energy resources. The energy supply system for a building is, especially with view on thermal interrelations, a highly complex and heterogeneous system that emerges jointly with the building construction, the user's behavior, the weather conditions and the surrounding energy and price...
This paper presents the development of a multivariable control system for regulation of the physical quantities associated to the fouling phenomena on an experimental platform. This platform is considered as a two-by-two system, i.e., the voltage and current as the inputs system and the flow and pressure as the outputs system. In the Matlab scripts, the plant model was identified as a set of first-order...
In Indonesia, river water plays important roles in human life; for example, for transportation and economic activities of the inhabitants. However, industrial, agricultural and domestic water is discarded into rivers directly in many developing countries, since drainage systems have not been completely constructed. Water quality monitoring using radio-controlled submarine provide an opportunity to...
The proposed work aims to describe the “V-FIDES” project, focused on developing a new generation of agile, over-actuated, long endurance Autonomous Underwater Vehicles, for deep underwater exploration, operation and environmental monitoring. The project, co-funded by Tuscany Region (Italy), has been developed by a team lead by WASS S.p.A. (Whitehead Sistemi Subacquei, Livorno), with the participation...
As power and mechatronics systems become increasingly more complex, graduating engineers are required to have a deeper understanding of various electrical engineering topics such as: electronics, controls, electro-magnetism, electrical power, electric machines, communications, software, data acquisition and signal processing. To train electrical engineers of the future, conversant in these multi-disciplinary...
Internet of Things (IoT) is extension of current internet to provide communication, connection, and inter-networking between various devices or physical objects also known as “Things.” In this paper we have reported an effective use of IoT for Environmental Condition Monitoring and Controlling in Homes. We also provide fault detection and correction in any devices connected to this system automatically...
In this paper, a variable rate fertilization control system for use on granular fertilizer applicator based on DC motors is proposed. It is composed of an embedded terminal and a variable rate controller. By analysis the fertilization theory, the relationship between the parameters affecting the application rate and the position of the gearbox setting lever can be established. The embedded terminal...
We study an intelligent control system for LED (light emitting diode) street lamp based on illumination sensing and PWM (pulse width modulation). Experiment results show that the system can achieve energy-saving, environment-friendly and long life, and avoid human audible noise by using 25kHz as PWM modulation frequency.
In this study, an irrigation system which has an adaptive control system fed from the photovoltaic panels was designed and developed. The control system was designed as an electromechanical system which photovoltaic panel follows the sun on two axes, including both azimuth angle and zenith angle. In the executed system, the tracking of the sun was performed in both axes using dsPIC. Moreover, the...
This paper presents a combined control system for mobile robot. The developed system allows to teleoperate a mobile robot and switches to autonomous movement when the connection with the mobile robot is lost. To create this control system the comparative analysis of existing sensors was performed, based on this analysis the sensors for localization robot were chosen, the virtual model of the 4-wheeled...
The interaction of a cyber-physical system (CPS) may impose additional constraints upon cyber aspects of the system. For instance, sensing and actuation often require nonpreemption to ensure “accuracy” in data acquisition (e.g., radar sensors in automotive a cruise control system). Furthermore, CPS may require that a system adapts to changing environment which requires support for multiple operating...
This paper discusses an approach to robust control law design for fault-tolerant systems. Based on the assumption that the effects of faults can be expressed in Linear-Fractional-Transformation (LFT) forms, a fault-tolerant control systems design problem is formulated and solved via a linear matrix inequality (LMI)-based synthesis approach, to recover the convexity of the design problem whilst considering...
For automatic control of a gait neuroprosthesis utilizing functional neuromuscular stimulation, a new supervisory finite-state controller, and an low-level closed-loop knee extension controller are introduced. Experimental results with complete thoracic spinal cord injured patients are presented. The objective is to provide users with increased control over their desired movement while reducing excessive...
In this paper a new software architecture is introduced which combines and adapts effective design patterns for the development of cloud-based algorithms in cyber-physical control systems (CPCS). The integration of cloud computing and cyber-physical systems (CPS) allows the flexible use of IT-Services and offers nearly infinite amount of storage space and computing capacities for embedded systems...
Today's manufacturing enterprises are characterised by frequently changing market demands, time-to-market pressure, continuously emerging new technologies and global competition. The traditional manufacturing control systems are often lacking in terms of the capabilities of responsiveness, flexibility, robustness and re-configurability. Therefore, there is a need of interoperability and integration...
This study proposes a vehicle-following control system for personal electric vehicles (EV). Recently, projects aimed at using personal vehicles to solve vehicle transportation problems associated with overcrowding in cities and depopulation in mountain villages have been under way in several regions in Japan. This study was conducted to contribute to improving mobility in depopulated regions by applying...
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