Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 129 for “"SRM"”.
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Application and enhancement of the SRM model
The main focus of this thesis has been to apply and to develop the storage routing model. The storage routing model is a method of hydraulic numer- ical calculation. It is based on the Saint-Venant equations and works under the quasi steady dynamic wave assumption. It rst creates HPGs and VPGs …
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The Development and Implementation of a TMT-SRM Assay for the Validation of Candidate Biomarkers of Alzheimer’s Disease
… assays. Selected reaction monitoring (SRM) has emerged as an accurate and precise method for targeted protein selection through signature peptide measurement in highly complex mixtures such as plasma. Quantitative SRM-based assays are an attractive alternative to immuno-based approaches …
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Impediments to Effective Safety Risk Assessment of Safety Critical Systems: An Insight into SRM Processes and Expert Aggregation
… thesis addresses both these concerns present in SRM processes. For the problem of combining safety metrics, three potential approaches have been proposed. Normative Decision Analysis tools such as Utility Theory and Multi-attribute Utility Theory were proposed in the first and second approaches. …
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INVESTIGATING THE IMPACT OF ROCK BRIDGES ON THE MECHANICAL BEHAVIOR OF JOINTED ROCK MASS USING LATTICE SPRING-BASED SYNTHETIC ROCK MASS (LS-SRM) APPROACH
… the lattice spring base Synthetic Rock Mass (LS-SRM) method was adopted to conduct the numerical models, distinguished in computational efficiency, and simulates the brittle failure and roughness of discontinuities.</p> <p>A robust approach was developed to optimize the calibration procedure to …
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Supplier relationship management : value creation via systematic management of suppliers and processes
Toimittajasuhteiden hallinta (SRM) on monivuotinen strategisen toimitusketjun hallinnan käytäntö ja suunnittelutyökalu. SRM tähtää arvon luomiseen johtamalla hankinnan toiminnot systemaattisella tavalla. Tyypillisesti yritys voi luoda arvoa hyödyntämällä SRM:n systemaattisia prosesseja kun se …
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Bipolar excitation of switched reluctance machines
… recent years, the switched reluctance machine (SRM) has become a prominent electromechanical device and is seriously considered as a candidate for such diverse areas as: aerospace, vehicular technology, home appliances, and military applications. The resurgence of the SRM has primarily been the …
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Design and Implementation of Four-quadrant Operation in Single-Switch Based Switched Reluctance Motor Drive System
… components, the Switched Reluctance Machine (SRM) has become the center of public attention. Interest in a single-phase SRM has arisen in many places, especially because of its low cost applications. However, some drawbacks have plagued single-phase SRM: the lack of self-starting capability …
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Nonlinear Deadbeat Current Control of a Switched Reluctance Motor
… to the success of the switched reluctance motor (SRM). Yet high motor phase nonlinearities in the SRM place extra burden on the current controller, rendering it the weakest link in SRM control. In contrast to linear motor control techniques that respond to current error, the deadbeat controller …
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Design and steady-state analysis of the switched reluctance motor drive
… In particular, the switched reluctance motor (SRM) has received attention mainly due to its simple construction and robustness when compared to other variable-speed drives. Considerable research has been done on topics ranging from the design to the control of the motor. Due to the high …
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High-performance torque control of switched reluctance motor
… low speed operation. Switched Reluctance Motor (SRM) produces excessive torque ripples due to discrete excitation of phase windings and its non-linear magnetization characteristics. A new polynomial model in phase current and rotor position is developed for representing SRM flux-linage and …
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Control of Pseudo-Sinusoidal Switched Reluctance Motor with Zero Torque Ripple and Damped Input Current Ripple
Switched reluctance motor(SRM)drives are favored in many industrial applications because of their cost advantage and ruggedness. However, the torque ripple and bus current ripple of SRM restrict its application range compared with traditional AC and DC motors due to the doubly salient pole …
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Single-Phase, Single-Switch, Sensorless Switched Reluctance Motor Drive Utilizing a Minimal Artificial Neural Net
… ANNs advocated in switched reluctance motor (SRM) control typically have a large number of neurons and several layers which impedes their real time implementation in embedded sys- tems. Real time estimation at high speeds using these ANNs is diffcult due to the high number of operations …
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Flow study of the nozzle region of the space shuttle solid rocket motor
… characteristics inside the solid rocket motor (SRM) used on the NASA space shuttle. The objective of this investigation was to determine whether the internal flow structure could adversely affect the nozzle/case joint and the surrounding casing. Also, it was hoped to learn more about causes of …
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Assisted history matching using pattern recognition technology
… are used to develop a Surrogate Reservoir Model (SRM) and use it as the engine to drive the history matching process. SRM is a prototype of the full field reservoir simulation model that runs in fractions of a second. SRM is built using a small number of geological realizations.;To accomplish the …
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Multi-Physics Co-Simulation of Engine Combustion and Exhaust Aftertreatment system: Development of a Multi-Physics Co-Simulation Framework of Engine Combustion and Exhaust Aftertreatment for Model-Based System Optimisation
… capability of the stochastic-based Kinetics SRM engine suite by CMCL Innovations is evaluated in depth. With the main objectives of this research to create a multi-physics co-simulation framework and improve the traditional engine modelling approach of individual simulation of engine system …
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Hybrid Dynamic Modelling of Engine Emissions on Multi-Physics Simulation Platform. A Framework Combining Dynamic and Statistical Modelling to Develop Surrogate Models of System of Internal Combustion Engine for Emission Modelling
… Framework, GT Suite + Stochastic Reactor Model (SRM), one fundamental problem is to establish a real time stochastic simulation capability. This problem can be addressed by replacing the slow combustion chemistry solver (SRM) with an appropriate NOx surrogate model. The approach taken in this …
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Hybrid Dynamic Modelling of Engine Emissions on Multi-Physics Simulation Platform. A Framework Combining Dynamic and Statistical Modelling to Develop Surrogate Models of System of Internal Combustion Engine for Emission Modelling
… Framework, GT Suite + Stochastic Reactor Model (SRM), one fundamental problem is to establish a real time stochastic simulation capability. This problem can be addressed by replacing the slow combustion chemistry solver (SRM) with an appropriate NOx surrogate model. The approach taken in this …
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Modeling and Implementation of Controller for Switched Reluctance Motor With Ac Small Signal Model
… been used for the switched reluctance motor (SRM) current controller. The Hysteresis controller induces large unpleasant audible noises because it needs to vary the switching frequency to maintain constant Hysteresis current band. In contract, the PWM controller is very quiet but difficult to …
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A microprocessor control scheme for switched reluctance motor drives
… for variable speed switched reluctance motor(SRM) drives is discussed. A particular implementation derived from first principles of the SRM is presented. The Intel 8088 microprocessor is used for the design implementation. It is shown that given the control requirements of the SRM like firing …
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Investigating the current scope and potential of forensic entomology in decomposition cases at Salt River Mortuary, Cape Town, South Africa
… cases conducted at Salt River Mortuary (SRM). With prolonged time since death and increased decomposition, entomological evidence becomes increasingly important in the estimation of minimum post-mortem interval. Currently no standard protocol exists for the handling of entomological …
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