Search results for "Control system"
showing 10 items of 971 documents
Three-month-old infants’ sensitivity to horizontal information within faces
2015
An approach to the measurement of the nonlinear refractive index of very short lengths of optical fibers
2018
A method for the measurement of the nonlinear-refractive index coefficient in single-mode optical fibers is presented. It takes advantage of the high sensitivity of the acousto-optic interaction effect in optical fibers to the fiber properties. Direct measurement of the nonlinear-refractive index change resulting from cross-phase modulation between a probe and a pump signal is obtained from the fiber's acousto-optic interaction performance. It is a non-interferometric method in which a very short length of fiber (<0.25 m) is required.
Optimal design of tube hydroforming processes: A fuzzy-logic-based approach
2004
In recent years, tube hydroforming has become an economic and industrially suitable alternative to various traditional stamping processes, in particular for small batch production. In the present paper, an artificial intelligence system based on fuzzy logic was implemented for tube hydroforming process design. The aim was to achieve a process design procedure able to prevent forming defects and guarantee the achievement of the desired final shape of the component. In particular, the process design concerns the internal pressure history and the axial feeding. The fuzzy system is able to provide optimal trajectories for both the controlled parameters, producing a defect-free final part.
Scope Oriented Thermoeconomic analysis of energy systems. Part II: Formation Structure of Optimality for robust design
2010
This paper represents the Part II of a paper in two parts. In Part I the fundamentals of Scope Oriented Thermoeconomics have been introduced, showing a scarce potential for the cost accounting of existing plants; in this Part II the same concepts are applied to the optimization of a small set of design variables for a vapour compression chiller. The method overcomes the limit of most conventional optimization techniques, which are usually based on hermetic algorithms not enabling the energy analyst to recognize all the margins for improvement. The Scope Oriented Thermoeconomic optimization allows us to disassemble the optimization process, thus recognizing the Formation Structure of Optimal…
Optimal design of complex passive-damping systems for vibration control of large structures: An energy-to-peak approach
2014
Published version of an article in the journal: Abstract and Applied Analysis. Also available from the publisher at: http://dx.doi.org/10.1155/2014/510236 Open Access We present a new design strategy that makes it possible to synthesize decentralized output-feedback controllers by solving two successive optimization problems with linear matrix inequality (LMI) constraints. In the initial LMI optimization problem, two auxiliary elements are computed: a standard state-feedback controller, which can be taken as a reference in the performance assessment, and a matrix that facilitates a proper definition of the main LMI optimization problem. Next, by solving the second optimization problem, the …
Optimal design of an electro-hydraulic valve for heavy-duty vehicle clutch actuator with certain constraints
2016
Abstract The main objective of this paper is to investigate the sensitivity analysis and optimal design of a proportional solenoid valve (PSV) operated pressure reducing valve (PRV) for heavy-duty automatic transmission clutch actuators. The nonlinear electro-hydraulic valve model is developed based on fluid dynamics. In order to implement the sensitivity analysis and optimization for the PRV, the PSV model is validated by comparing the results with data obtained from a real test-bench. The sensitivity of the PSV pressure response with regard to the structural parameters is investigated by using Sobol׳s method. Finally, simulations and experimental investigations are performed on the optimi…
Clustering the mediators between the sales control systems and the sales performance using the AMO model: A narrative systematic literature review
2018
[EN] Purpose: To identify all types of sales force control systems in the academic literature, and to cluster the mediators between these controls and the performances, according to the AMO model (abilities, motivations, and opportunities), analysing how each of these three groups of mediators are influenced by control systems, and how they impact on the sales performance, using a systematic literature review. Design/methodology: Scientific papers published during the last 32 years, using as databases: Business Source Premier (EBSCO), Science Direct, Scopus, Web of Science, and Google Scholar. Business, Management and Social Sciences were taken as selection fields. False positives identific…
Probabilistic Fuzzy Approach to Evaluation of Logistics Service Effectiveness
2014
Received: 9 September 2014 Abstract Accepted: 11 October 2014 Logistics service providers offer a whole or partial logistics business service over a certain time period. Between such companies, the effectiveness of specific logistics services can vary. Logistics service providers seek the effective performance of logistics service. The purpose of this paper is to present a new approach for the evaluation of logistics service effectiveness, along with a specific computer system implementing the proposed approach – a sophisticated inference system, an extension of the Mamdani probabilistic fuzzy system. The paper presents specific knowledge concerning the relationships between effectiveness i…
Special Issue: Current Trends in Research in Accounting Finance and Management Control
2017
On January 27, 2016, an agreement was signed with OmniaScience to select articles to be published in the journal Intangible Capital, in a special issue titled "Current Trends in Research in Accounting, Finance and Management Control." The agreement was reached within the framework of three events at the University of Valencia, from June 27 to 30, 2016: XXI Workshop on Accounting and Management Control. “Memorial Raymond Konopka”, X Iberoamerican Congress of Management Accounting, III International Congress on Port Management.More than 200 papers were presented to these events. After being peer-reviewed by a scientific committee made up of 50 professionals, 123 papers were selected. Then, t…
Sensitivity Analysis Of Key Customers And Revenue-Oriented Admission Control And Scheduling Algorithm
2013
Received: 15 January 2013 Abstract Accepted: 2 February 2013 The paper deals with the problem of Quality of Web Service (QoWS) in e-commerce Web servers, i.e. in retail Web stores. It concerns the admission control and scheduling algorithm for a Web server system, which aims at preventing the system from overload to provide high QoWS level and ultimately, to increase Web site’s conversion rate, i.e. to turn more visitors into customers. The sensitivity of the algorithm to changes in its basic parameter values was analyzed by using a simulation-based approach. Special attention was paid to evaluation of the parameter impact on conventional and business-related system performance metrics.