Design Of Reconfigurable System Research Articles

Performance Improvement for Reconfigurable Processor System Design in IoT Health Care Monitoring Applications

Performance Improvement for Reconfigurable Processor System Design in IoT Health Care Monitoring Applications

NSGA-III-based multi-objective approach for reconfigurable manufacturing system design considering single-spindle and multi-spindle modular reconfigurable machines

NSGA-III-based multi-objective approach for reconfigurable manufacturing system design considering single-spindle and multi-spindle modular reconfigurable machines

Design and Implementation of a Reliable Reconfigurable Imaging System

Because of SRAM sensitivity to radiation, SRAM-based FPGA systems deployed in harsh environments require error mitigation methods to reduce their overall downtime. This paper presents a fault-tolerant reconfigurable imaging system that relies on the DPR feature for correcting errors in the configuration memory and loading camera system IPs. The system reliability is evaluated by injecting faults in the FPGA configuration memory at runtime using the Xilinx SEM IP. The faults are injected internally using the Internal Configuration Access Port (ICAP), which is shared between the fault injection core and system parts. The results showed that 95% of the errors can by corrected automatically. This paper also proposes a fast-Built-in-Self-Test (BIST) mitigation technique to reduce the overall downtime in case of errors. This technique can reduce the recovery time by 80%. Moreover, Triple Modular Redundancy (TMR) is used to increase the overall reliability without significantly increasing the resource overhead.

Reconfigurable Robotic System Design With Application to Cleaning and Maintenance

Abstract The design of cleaning and maintenance (CaM) robots is generally limited by their fixed morphologies, resulting in limited functions and modes of operation. Contrary to fixed shape robots, the design of reconfigurable robots presents unique challenges in designing their system, subsystems, and functionalities with the scope for innovative operational scenarios and achieving high performance in multiple modalities without compromise. This paper proposes a heuristic framework using three layers, namely input, formulation, and output layer, for designing reconfigurable robots with the aid of established transformation principles including expand/collapse, expose/cover, and fuse/divide observed in several products, services, and systems. We apply this heuristic framework approach to the novel design of a pavement CaM robotic system and subsystems, namely, (i) varying footprint, (ii) transmission, (iii) outer skin or cover, (iv) storage bin, (v) surface cleaning, and (vi) vacuum/suction and blowing. The advances in the design method using the heuristic approach are demonstrated by developing an innovative reconfigurable design for the CaM task. Kinematic analysis and control architecture enables the unique locomotion behavior and gaits, namely, (a) static reconfiguration and (b) reconfiguration while locomotion, supported by the control architecture. Experiments were conducted, and outcomes were discussed along with the failure mode analysis to support the design robustness and limitations through the observations made from the development to testing phase over one year. A detailed video demonstrating the design capabilities is linked.

A simulated annealing approach for optimizing layout design of reconfigurable manufacturing system based on the workstation properties

The problem studied focuses on facility layout problems (FLP) that arise in reconfigurable manufacturing systems. The goal is to reduce the distance traveled by an automatic guided vehicle (AGV) to move products between several workstations. The proposed solving approach takes into account the empty and loaded travels made by this vehicle as well as the machine's properties (i.e. layout, orientations, shapes of workstations). We use simulated annealing to optimize this problem. The findings demonstrate the impact of the modification of the layout, the orientation, the shape, and the benefits of using the three together. In addition, we study two different ways to optimize the solution: each property independently (i.e. sequentially) or all properties together. Preliminary results show that the sequential method outperforms the latter in terms of distance gain.

Sustainable reconfigurable manufacturing system design using adapted multi-objective evolutionary-based approaches

Nowadays, manufacturing systems should be cost-effective and environmentally harmless to cope with various challenges in today’s competitive markets. This paper aims to solve an environmental-oriented multi-objective reconfigurable manufacturing system design (i.e., sustainable reconfigurable machines and tools selection) in the case of a single-unit process plan generation. A non-linear multi-objective integer program (NL-MOIP) is presented first, where four objectives are minimized respectively, the total production cost, the total production time, the amount of the greenhouse gases emitted by machines, and the hazardous liquid wastes. Second, to solve the problem, we propose four adapted versions of evolutionary approaches, namely two versions of the well-known non-dominated sorting genetic algorithm (NSGA-II and NSGA-III), weighted genetic algorithms (WGA), and random weighted genetic algorithms (RWGA). To show the efficiency of the four approaches, several instances of the problem are experimented, and the obtained results are analyzed using three metrics respectively hypervolume, spacing metric, and cardinality of the mixed Pareto fronts. Moreover, the influences of the probabilities of genetic operators (crossover and mutation) on the convergence of the adapted NSGA-III are analyzed. Finally, the TOPSIS method is used to help the decision-maker ranking and select the best process plans.

Programming dynamic reconfigurable systems

DR-BIP is an extension of the BIP component framework intended for programming reconfigurable systems encompassing various aspects of dynamism. It relies on architectural motifs to structure the architecture of a system and to coordinate its reconfiguration at runtime. An architectural motif defines a set of interacting components that evolve according to reconfiguration rules. With DR-BIP, the dynamism can be captured as the inter-play of dynamic changes in three independent directions: (1) the organization of interactions between instances of components in a given configuration; (2) the reconfiguration mechanisms allowing creation/deletion of components and management of their interaction according to a given architectural motif; and (3) the migration of components between predefined architectural motifs which characterizes dynamic execution environments. The paper lays down the formal foundation of DR-BIP, illustrates its expressiveness on few examples and discusses avenues for dynamic reconfigurable system design.

Exterior Car Parking Assistance Algorithm Based on Reconfigurable System for Future Industry

A car accident while parking the car is caused by the car driver, who is invisible around the car. However, there are no solutions for parking assistance when the driver is outside the car. The objective of this paper is to propose a reconfigurable embedded system design by voice controlled parking assistance system for a prototype electric vehicle connected to a smartphone via Bluetooth. Hardware and software co-design using the Xilinx VIVADO as a software design tool is introduced. We design the hardware and software on an ARM multicore processor and the reconfigurable system board model ZYBO: XC7Z010 by considering it as hardware accelerator. The hardware of the proposed voice controlled exterior car parking assistance system is installed on the miniature electric vehicle. The experiments are tested successfully at the parking area for both reverse parking and reverse parallel parking. This proposed system is better suited for users so that they can control their car comfortably while parking safely.

Design of a flexible reconfigurable mobile robot localization system using FPGA technology

Mobile robot activities have variable computational requirements according to various parameters related to the robotic applications behaviour and the robot dynamic environment. This high variability puts many challenges for a complete robot navigation system design. With their high flexibility, reconfigurable architectures are a suitable choice to design such dynamic system. Mobile robot navigation steps (perception, localization, obstacle avoidance and path planning) are extremely complex to be embedded in a complete navigation controller. In this paper, we presented a generic and a flexible platform based on FPGA technology, for studying and prototyping complete unified robot navigation system. We exploited the dynamic reconfiguration mechanism that allows modifying the navigation controller according to different navigation algorithm requirements. We showed the effectiveness of this platform in the localization step. We have a dynamic reconfigurable system that switches between three different localization techniques to satisfy energy/surface ratio and exploit the released resources to implement other robot tasks.

Design and implementation of high performance reconfigurable integrated electronic system for micro/nano-satellite

Design and implementation of high performance reconfigurable integrated electronic system for micro/nano-satellite

The concept of "safety bubble" to build ethical reconfigurable assembly systems

The concept of Reconfigurable Assembly System has been proposed in the last decade to deal with mass-customization problems and volatile market environment. If physical design or control issues of these systems have been studied intensively, very few works concern the inherent ethical risks and associated safety problems. However these issues are of first interest for reconfigurable robotized systems with frequent interventions of human operators. Indeed, the re-configurability features of these manufacturing systems induce new issues in safety. The manufacturing enterprises must pay attention to the possible consequence of the Reconfigurable Assembly System design on the safety of the humans and on their possible responsibility in case of an accident. The present paper proposes the concept of safety bubble aiming to insure human’s safety by cooperation among safe robotized units. After a presentation of the ethical considerations, a design methodology of such safety bubble is detailed. The on-going works in simulation and on a real demonstrator, including collaborative robots and mobile robots, are then described.

Design and development of reconfigurable embedded system for real‐time acquisition and processing of multichannel ultrasonic signals

The study proposes a novel hardware-based architecture of the reconfigurable embedded system for the multi-channel immersion ultrasonic system. It provides the addressing-based analogue multiplexing scheme, which requires only one data acquisition unit and common on-chip storage for the multi-channel imaging system. It also provides unique channel reconfigurable facility to the user to modify the number of channels (up to 256 for pulse-echo and 512 for transmit-receive mode by installing only the partial front-end hardware (pulser, pre-amplifier) and without modifying the remaining data acquisition hardware (common-amplifier, digitiser) and back-end embedded system. The developed system further supports dynamic on-line reconfiguration of the analogue front-end hardware, real-time hardware-based data processing, and data transfer operation. The authors have implemented the addressing-based reconfigurable architecture of the coherent averaging for noise reduction. For the experimentation, the complete four-channel ultrasonic imaging system for immersion testing has been designed, developed, and evaluated in the laboratory. Furthermore, this study describes the capability of the proposed system by performing multi-channel real-time data acquisition, hardware-based coherent averaging, channel multiplexing-demultiplexing, reconfigurable control, and software-based post-processing. Here, they present the performance evaluation of the developed multi-channel system by carrying out the B-scan and C-scan image acquisition of the water-immersed mechanical components.

Modelling and control design of reconfigurable wireless power transfer system for transmission efficiency maximisation and output voltage regulation

In a wireless power transfer (WPT) system, higher transmission efficiency and regulated output/load voltage/power are two major design targets or criteria of interest. This study presents the modelling, control design and stability evaluation of a reconfigurable WPT (R-WPT) system which can achieve constant receiver/load's voltage/power and realises transmission efficiency maximisation under varying transmission distances (DIS) and misalignment (MIS) conditions in addition to varying load conditions. The controller is realised to adaptively switch between different sizes of drive loops and load loops. As a result, the loop-coil coupling factors are optimised to realise transmission efficiency maximisation. The small-signal modelling of the complete closed-loop control R-WPT system is derived to evaluate the system stability during different configurations and different DIS/MIS conditions. Detailed sets of experimental results are provided and discussed throughout the study to give insight on the system modelling, operation and performance.

Generic Framework for Holonic Modelling and Multi-Agent Based Verification of Reconfigurable Manufacturing Systems

Globalization and mass customization are demanding a higher level of productivity. The relevance of modelling approaches to the study and design of reconfigurable manufacturing system (RMS) is widely claimed to achieve the highest productivity. Principally, reconfigurability in manufacturing systems should support the changeability with precisely the production capacity and functionality needed and exactly when needed. Simulation of such reconfigurable systems has become more and more difficult with the increasing complexity of system requirements. In spite of the promising methodology for designing RMS, an effective framework that bridges the gap between conceptual modelling level process and simulation level process is still a major challenge for Scientist. For this reason, we propose in this paper a generic framework especially designed for building and running executable agent-based models of RMS. This framework relies on SysML (Systems Modelling Language) models specifications, the holonic system techniques and multi-agent system in order to generate executable models of RMS. The considered case study for this paper is based on a steel converter process. Results showed an increase in the productivity rate after simulating the reconfigurability test cases through the developed agent-based models.

Development of shape memory alloy actuator integrated flexible poly-ether-ether-ketone antenna with simultaneous beam steering and shaping ability

Active control of antenna radiation by mechanical reconfiguration has large potential applications in space as well as in ground segment. Such reconfigurable antenna primarily has two functionalities: beam steering and beam shaping. While previous research has shown individual control of these functions; we have developed a suitable antenna actuation system which takes care of both the functionalities. To demonstrate our concept, we have fabricated a 1-m diameterC-band flexible reflector of poly-ether-ether-ketone using precisely machined aluminum mold. A periphery feed structure is connected to the center of the reflector by a goose-neck-shaped supporting frame. Next, we have designed and developed a smart control-disk containing two types of shape memory alloy actuator-based self-locking devices. A group of actuators are used for locking/unlocking the rotational degree of freedom of the antenna; while the other group generates deformation of antenna at the desired direction. An 8-bit absolute encoder is installed with each locking device to sense and feedback the displacement of a control point. We have achieved a controllable deflection up to 25 mm with a precision of 0.3 mm with this system. A directional precision of [Formula: see text] is also achieved simultaneously. Presently, we have developed eight such actuation points on the disk to control the shape of the antenna. For numerical simulation of the structural deformation and study of the radio frequency pattern, finite element analysis is carried out using ABAQUS, and the far-field radiation pattern corresponding to the deformed shape is obtained. The electromagnetic patterns are analyzed using geometric optics technique. Finally, a methodology of achieving surface coordinates for desired radiation pattern is presented. The study provides useful insights into the design of flexible and reconfigurable antenna system.

Research on the Functional Design of Reconfigurable Manufacturing System Under Mass Customization Environment

Firstly, clarify the background of the reconfigurable manufacturing system and the axiomatic design theory, axiomatic design has two axioms including independent axiom and information axiom. This paper is based on Axiomatic Design, Using the independent axiom to the function design of the reconfigurable manufacturing system, the overall goal of three-level decomposition, each level of decomposition will list the corresponding design matrix to verify whether it meets the independence, and then summarizes the integrity of the decomposition of the design, finally, the feasibility of the design scheme is verified by an example.

Exploring the design process of reconfigurable industrial production systems

PurposeThe purpose of this paper is to explore activities, challenges, and suggest tactics for the design of industrial reconfigurable production systems that can easily adapt to changing market opportunities.Design/methodology/approachThe paper synthesizes the empirical findings of seven case studies including 47 in-depth interviews at four manufacturing companies.FindingsA conceptual production system design process and including activities that enables a long-term perspective considering reconfigurability is proposed. Additionally, critical challenges indicating that reconfigurable production system design is not a trivial issue but one that requires separate control and coordination are identified and tactics to overcome the challenges described.Research limitations/implicationsThe authors propose a process for designing reconfigurable production systems that are better suited to adjust to future needs. The knowledge of reconfigurability from the reconfigurable manufacturing system literature is applied in the general production system literature field. This study contributes to a clearer picture of managerial challenges that need to be dealt with when designing a reconfigurable production system.Practical implicationsBy clarifying key activities facilitating a long-term perspective in the design process and highlighting challenges and tactics for improvement, the findings are particularly relevant to production engineers and plant managers interested in increasing the ability to adapt to future changes through reconfigurability and improve the efficiency of their production system design process.Originality/valueAlthough reconfigurable production systems are critical for the success of manufacturing companies, the process of designing such systems is not clear. This paper stretches this by giving a comprehensive picture of the production system design process and the activities that need to be considered to meet these challenges.

Design and Implementation of Zynq-Based Reconfigurable System for Jpeg 2000 Compression

Design and Implementation of Zynq-Based Reconfigurable System for Jpeg 2000 Compression

Modularity assessment in reconfigurable manufacturing system (RMS) design: an Archived Multi-Objective Simulated Annealing-based approach

Enhancing productivity, reducing inaccuracy and avoiding time waste at changeover are considered major drivers in manufacturing system design. One of the emerging paradigms concerned with these characteristics is reconfigurable manufacturing systems (RMSs). The high responsiveness and performance efficiencies of RMS make it a convenient manufacturing paradigm for and flexible enabler of mass customization. The RMS offers customized flexibility and a variety of alternatives as features thanks to its reconfigurable machine tool (RMT). These machines represent a major component of RMS and are based on an adjustable, modular and reconfigurable structure. Hence, the system modularity is of great importance. This paper outlines a multi-objective approach to optimize the RMS design. Three objectives are considered: the maximization of the system modularity, the minimization of the system completion time and the minimization of the system cost. We developed a modularity-based multi-objective approach that uses an adapted version of the “Archived Multi-Objective Simulated Annealing” (AMOSA) method to solve the optimization problem by selecting from a set of candidate machines the most suitable ones. Implemented, the decision maker can use a multi-objective decision making tool based on the well-known “Technique for Order of Preference by Similarity to Ideal Solution” (TOPSIS) to choose the best solution in the Pareto front according to his preferences. We demonstrated the applicability of the proposed approach through an illustrative example and an analysis of the obtained numerical results.

Layout evolution effort for product family in Reconfigurable Manufacturing System design

This paper describes a multi-objective approach that assesses the evolution and layout transition efforts between products of a product family in reconfigurable manufacturing systems (RMS) design. The layout evolution effort is minimized and system performance metrics (i.e., average machine utilization and alternative replacement machines within the system) are maximized. The problem considers various manufacturing constraints as well as various metrics to ensure the high performance of the designed reconfigurable manufacturing system following the generated layouts. The effectiveness of the developed approach is evaluated using an illustrative numerical example. The results show the effectiveness of the multi-objective approach to help decision maker’s designing RMS. The approach can be used later to guarantee a better system performance when solving the problems of machine layout in the context of RMS.