Design Of Digital Systems Research Articles

Resource minimization and power reduction of ESPFFIR filter using unified adder/subtractor

Digital filters are the important processing elements in most of the digital signal processing system designs, ranging from medical signal processing to wireless communication. Low power and area efficient Finite Impulse Response filter is designed with the aid of parallel processing which increases the throughput. Symmetric property reduces the multipliers into half in Even Symmetric Parallel Fast Finite Impulse Response (ESPFFIR) filters. The adder and the subtractor present in the pre/post-processing blocks increase in accordance with the block size L of ESPFFIR filter which in turn increases the numbers of unified operators. The canonical signed digit representation of the coefficient in the design Multiple Constant Multiplications (MCM) based multipliers has the advantages of utilizing unified operators in sub-filter block of ESPFFIR. To reduce the power consumption and resource utilization of the ESPFFIR filter, the unified operator used in the pre/post processing and MCM blocks are replaced by unified adder subtractor (UAS). The UAS utilizes fewer resources for simultaneous calculation of sum and difference of two operands with less area and low power consumption. This paper shows the design of 16-bit Square Root (SQRT) UAS CSLA adder using UAS logical element to reduce the area utilization, power consumption and delay. Then the Heuristic of cumulative benefit (Hcub) based MCM multiplier is designed using UAS. The existing SQRT BEC CSLA adder and subtractor with same input present in the pre/post processing block of the ESPFFIR filters are replaced by a single SQRT UAS CSLA in suitable places. The Hcub MCM used in the sub-filter blocks of the ESPFFIR are replaced using SQRT UAS CSLA based MCM multiplier. The SQRT UAS CSLA consumes 78% less area, 29.51% less power and 24% less delay when compared to the BEC CSLA 2 (one BEC based CSLA Adder plus one BEC based CSLA Subtractor). Finally, the SQRT UAS CSLA adder and Hcub based UAS MCM multipliers are used to design the filter, the overall area and power consumption of UAS based ESPFFIR is reduced compared with the existing BEC based ESPFFIR filter. Cadence RC tool is used for analysis.

Wooden Structures within the Context of Parametric Design: Pavilions and Seatings in Urban Landscape

Today, on one hand while the traditional design process continues, on the other hand, digital design systems along with advances in computer technologies continue to present designers with new and effective ideas. Parametric design is preferred by designers for its relationality, contributing towards versatility, ensuring flexibility, simplifying diversification and for presenting programatic solutions. As is seen in a number of areas, we have also begun to encounter the use of parametric designs produced with parametric design systems and wooden materials in urban landscaping. The purpose of this study is to examine the upper cover application and seating elements generated by taking advantage of parametric designs from wooden construction materials in urban landscaping areas, and examine the impact of wooden material characteristics while generating behavior and parametric structures of technologies. After researching parametric design and wooden material concepts, an attempt was made to reach conclusions through analyses conducted by examining parametric wooden designed pavilion and seating element specimens applied in various regions of the world.

Wooden Structures within the Context of Parametric Design: Pavilions and Seatings in Urban Landscape

Today, on one hand while the traditional design process continues, on the other hand, digital design systems along with advances in computer technologies continue to present designers with new and effective ideas. Parametric design is preferred by designers for its relationality, contributing towards versatility, ensuring flexibility, simplifying diversification and for presenting programatic solutions. As is seen in a number of areas, we have also begun to encounter the use of parametric designs produced with parametric design systems and wooden materials in urban landscaping. The purpose of this study is to examine the upper cover application and seating elements generated by taking advantage of parametric designs from wooden construction materials in urban landscaping areas, and examine the impact of wooden material characteristics while generating behavior and parametric structures of technologies. After researching parametric design and wooden material concepts, an attempt was made to reach conclusions through analyses conducted by examining parametric wooden designed pavilion and seating element specimens applied in various regions of the world.Â

Wooden Structures within the Context of Parametric Design: Pavilions and Seatings in Urban Landscape

Today, on one hand while the traditional design process continues, on the other hand, digital design systems along with advances in computer technologies continue to present designers with new and effective ideas. Parametric design is preferred by designers for its relationality, contributing towards versatility, ensuring flexibility, simplifying diversification and for presenting programatic solutions. As is seen in a number of areas, we have also begun to encounter the use of parametric designs produced with parametric design systems and wooden materials in urban landscaping. The purpose of this study is to examine the upper cover application and seating elements generated by taking advantage of parametric designs from wooden construction materials in urban landscaping areas, and examine the impact of wooden material characteristics while generating behavior and parametric structures of technologies. After researching parametric design and wooden material concepts, an attempt was made to reach conclusions through analyses conducted by examining parametric wooden designed pavilion and seating element specimens applied in various regions of the world.

Digital Sociotechnical System Design

Digital platforms increasingly are dictating how work is carried out, breaking down boundaries between companies, geographies, customers, and other stakeholders and participants, and determining who will benefit from advancing technology. Existing organization design frameworks do not adequately address the new reality where both the technical and social elements of the full ecosystem need to be designed. Work is no longer carried out within a bounded organization, and individual organizations can no longer be the focus of design. Building on both the traditional sociotechnical systems framework and strategic organization design frameworks, we propose a digital sociotechnical systems design approach. It involves multiple stakeholders and participants in codesigning the digital system and the social system at the ecosystem level. A case example from health care is described and discussed.

The design and implementation of a broadband digital low-level RF control system for the cyclotron accelerators at iThemba LABS

iThemba LABS has successfully designed a new broadband digital low-level RF control system for cyclotrons, that operates over the wide frequency range of 2–100 MHz and can achieve peak–peak amplitude and phase stabilities of 0.01% and 0.01°, respectively.The presented system performs direct digital synthesis (DDS) to directly convert the digital RF signals to analog RF and local-oscillator (LO) signals with 16-bit amplitude accuracy, programmable in steps of 1μHz and 0.0001°. Down-conversion of the RF pick-up signals to an optimal intermediate frequency (IF) of 1 MHz and sampling of the IF channels by 16-bit, single sample-latency 10 MHz ADCs was implemented to allow digital high-speed low-latency in-phase/quadrature (I/Q) demodulation of the IF channels within the FPGA. This in turn allows efficient real-time digital closed-loop control of the amplitude and phase of the RF drive-signal to be achieved.The systems have been successfully integrated at iThemba LABS into the K=8 and K=10 injector cyclotrons (SPC1, and SPC2), the K=200 separated sector cyclotron (SSC), the SSC flat-topping system, the pulse-selector system and the AX,J, and K-line RF bunchers.The systems have led to a substantial improvement in the beam quality of the SSC at iThemba LABS with a reduction in beam losses by more than 90%. The design, implementation and performance is discussed.

Research on Design and Implementation of Digital Art Examination System

With the rapid development of digital technology, multimedia technology and artificial intelligence, art learning and assessment methods have had a revolutionary change. Network-based examination uses computer and network technology to develop the examination system, which conforms to the actual requirements of the campus information construction and distance education, and becomes a new mainstream examination evaluation method. Based on the modernized development demand of art education and the theory of genetic algorithm, the research has conducted targeted design and realized the basic functions of the online examination system of art by using the test paper of genetic algorithm, ASP, SQL and Dreamweaver, and other techniques, with a relatively strong usability.

Design of Cloud-based and IPTV Digital Signage System

The purpose of this research is to control, monitoring, and broadcast video, audio, text with digital signage system based on cloud and IPTV. It also provides multi content on one screen display included YouTube channel and RSS feed. Network connection transfer using internet protocol, the component of cloud-based and IPTV included with a content management system and a broadcast management system. Companies provide digital signage services are still using one of the ads in large size, this can alleviate the cost of advertising using digital signage. Therefore, the result is a designed from a display of how the content can be variatif when displayed on a digital signage as well through cloud-based and IPTV.

Marginal accuracy of computer-aided design- and computer-aided manufacturing-fabricated full-arch zirconia restoration.

ObjectiveThis study evaluated marginal accuracy of full-arch zirconia restoration fabricated from two digital computer-aided design and computer-aided manufacturing (CAD-CAM) systems (Trios-3 and CS3500) in comparison to conventional cast metal restoration.Materials and methodsA stainless steel model comprising two canine and two molar abutments was used as a master model for full-arch reconstruction. The canine and molar abutments were machined in a cylindrical shape with 5° taper and chamfer margin. The CAD-CAM systems based on the digital approach were used to construct the full-arch zirconia restoration. The conventional cast metal restoration was fabricated according to a conventional lost-wax technique using nickel–chromium alloys. Ten restorations were fabricated from each system. The marginal accuracy of each restoration was determined at four locations for each abutment. An analysis of variance (ANOVA) and Tukey’s honest significant difference (HSD) multiple comparisons were used to determine statistically significant difference at 95% confidence interval.ResultsThe mean values of marginal accuracy of restorations fabricated from conventional casting, Trios-3, and CS3500 were 48.59±4.16 μm, 53.50±5.66 μm, and 56.47±5.52 μm, respectively. ANOVA indicated significant difference in marginal fit of restorations among various systems. The marginal discrepancy of zirconia restoration fabricated from the CS3500 system demonstrated significantly larger gap than that fabricated from the 3Shape system (p<0.05). Tukey’s HSD multiple comparisons indicated that the zirconia restoration fabricated from either CS3500 or Trios-3 demonstrated a significantly larger marginal gap than the conventional cast metal restoration (p<0.05).ConclusionFull-arch zirconia restoration fabricated from the Trios-3 illustrated better marginal fits than that from the CS3500, although, both were slightly less accurate than the conventional cast restoration. However, the marginal discrepancies of restoration produced by both CAD-CAM systems were within the clinically acceptable range and satisfactorily precise to be suggested for construction full-arch zirconia restoration.

The Design and Research of Digital Voltage Regulation System for YA7232B Machine Tool

YA7232B machine tool is widely used in industrial area. However, the voltage regulator circuit is composed of discrete components. That’s the reason why the dynamic response performance and reliability of it are reduced. In order to solve the above problem, we integrate those components into the STM32F103ZET6. More importantly, we write a set of software to ensure regulator circuit updated by us to be operated stably.

Design of a Robust Digital Control System for the Rectification Column Used in the Production of Divinyl

A complex optimization criterion that takes into account the integral quadratic error and the stability margin of a robust digital control system for the rectification column used for the butylene-divinyl fraction is proposed. The influence of the weight coefficient, taking into account the ratio of the performance and stability indicators, on the dynamic characteristics of the system is investigated. High system performance and system stability indices over a sufficiently broad range of variation of the parameters of the rectification column are achieved through the use of the proposed optimization criterion and a stability estimation algorithm in the synthesis of a robust digital control system.

基于优化混频器的数字下变频系统的设计与实现

基于优化混频器的数字下变频系统的设计与实现

Reversible Realization of N-bit Arithmetic Circuit for Low Power Loss ALU Applications

Today, low loss efficient digital calculating systems are among the key focus of researchers. Fast and efficient processing parts are in the concrete demands of this era. Reversible digital design approach is directed towards this need of efficient electronic system design. Arithmetic circuits are considered as the main part of any digital calculating system. Designing of these arithmetic subsystems using reversible design approach leads to the generation of low power loss efficient electronic systems. In this paper, we have proposed a novel approach to design n-bit arithmetic circuit with reversible design approach. This proposed design is compared with existing designs on the basis of some selected performance parameters. Comparison and analysis of these designs show that proposed design is the most optimized approach for reversible realization of arithmetic circuit for low power Arithmetic logic unit (ALU) circuit applications. The proposed model can be used for reversible design of digital computing systems for low power ALU designs.

Design of universal digital fish-eye lens testing system

Design of universal digital fish-eye lens testing system

Digital assembly instruction system design with green lean perspective-Case study from building module industry

Manual “easy jobs” need to be efficient, standardised and quality assured to remain competitive against automated production. Digitalised work instructions offer an opportunity to support standardisation and quality assurance for manual work tasks in industry. Inspired by axiomatic design this study aims at selecting design of lean methods and equipment for digital assembly instructions and standardised work. Literature regarding standardised work and green lean production system is applied in a case study. Interviews, observations and green lean equipment design methods are used to conclude system requirements of a digital work instruction-system designed for assembly of modular buildings at Husmuttern AB.

Analysis on Control System Design of Plant Simulator for Hardware-In-The-Loop Simulation Using MATLAB

This paper proposes to develop a simulation framework that can be used in the development of such digital control systems in academic environments. The Control System Plant Simulator simulates the object a digital control system designer wishes to control – referred to as a “Plant”. The Control System Plant Simulator follows the Hardware-In-The-Loop concept in that it takes the place of a physical plant. Designed and implemented controllers are attached to the Control System Plant Simulator, which will behave just as an actual plant will from the viewpoint of the controller. The simulator read input from a controller external to the host computer of the simulator. It evaluate the input in real-time, and provide output to the controller just as the actual plant will. Individuals can use the tool to prototype control systems without being forced to use expensive or limited physical resources. This allows for the education of the next generation of control system designers and implementers in a more realistic setting. The Control System Plant Simulator (CSPS) as a flexible framework for simulating plant models in control system implementation projects.

An improved spectral classification of Boolean functions based on an extended set of invariant operations

Boolean functions expressing some particular properties often appear in engineering practice. Therefore, a lot of research efforts are put into exploring different approaches towards classification of Boolean functions with respect to various criteria that are typically selected to serve some specific needs of the intended applications. A classification is considered to be strong if there is a reasonably small number of different classes for a given number of variables n and it it desir able that classification rules are simple. A classification with respect to Walsh spectral coefficients, introduced formerly for digital system design purposes, appears to be useful in the context of Boolean functions used in cryptography, since it is in a way compatible with characterization of cryptographically interesting functions through Walsh spectral coefficients. This classification is performed in terms of certain spectral invariant operations. We show by introducing a new spectral invariant operation in the Walsh domain, that by starting from n?5, some classes of Boolean functions can be merged which makes the classification stronger, and from the theoretical point of view resolves a problem raised already in seventies of the last century. Further, this new spectral invariant operation can be used in constructing bent functions from bent functions represented by quadratic forms.

Design of Game and Digital Contents Distribution System based on Block Chain

Design of Game and Digital Contents Distribution System based on Block Chain

The Design and Research of Digital Voltage Regulation System for YA7232B Machine Tool

The Design and Research of Digital Voltage Regulation System for YA7232B Machine Tool

FPGA Logic Circuit Implementation and Synthesis with VHDL Programming: A Learning Approach

There are significant numbers of relevant research works available that concerns VHDL programming and Field Programmable Gate Array (FPGA) based hardware design, simulation and implementation. This is because; both the FPGA design and VHDL programming realization are quiet new and useful to accomplish various tasks in the field of research for digital system designed and development of miniaturized embedded system. It is found difficult to understand and put into practice by the learners in the tertiary institution, which still requires rapid training and development. In this paper, we design and demonstrate an FPGAlogic circuit using 4-bit BCD adders and parallel 4-bit comparator with a stepwise development of the vital soft logic design flow, simulation and timing analysis. It also presents an educational concept designed for complementing courses offered like FPGA prototype and ASIC design. This perception of FPGA-based design flow will facilitate learner’s understanding, skills and it will provide detailed insights into various aspects of microelectronics, digital logic systems design and VHDL programming. Keywords: Behavioral synthesis, BCD Adder, Four-bit comparator, FPGA prototype, Hardware design, Microelectronic, VHDL programming.