Artificial intelligence (AI) is a fast-growing technology with the potential to transform education. While some fear it might replace teachers, AI's benefits in enhancing teaching and learning are gaining attentio...
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Intermittent circumstances for an IC-Chip can be classified as Increased gate delays, Slow-to-rise/fall signals, Degraded signals, Increased RC delays, Increased leakage, Opens, Slow-to-rise signals, Slow-to-fall sign...
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ISBN:
(纸本)9798350300284
Intermittent circumstances for an IC-Chip can be classified as Increased gate delays, Slow-to-rise/fall signals, Degraded signals, Increased RC delays, Increased leakage, Opens, Slow-to-rise signals, Slow-to-fall signals, Fails at high frequencies, Threshold voltage shifts, Weakened drive gates, Shorts, Defective interconnects, High/low Resistance interconnects, etc. Circuit configurations can significantly hinder or even block the diagnosis of these intermittent faults. Fault detection Interpretation for Intermittent failures in particular circuit configurations is limited, therefore IC-Chip Isolation and testing is necessary. This includes chip level pattern repetition, Frequency Span, Rise and Fall times settings, Hi and Lo and other test parameters settings. Hardware and behavioralmodeling is a technique of using an actual chip to model its own behavior during simulation. Chip Output vectors are processed by the LASAR and Non-LASAR simulator. The Westest Hardware Modeler is a hardware modeler, an actual ATE, a chip behavioral modeler, a TPS integration ATE and has a IC-Chip intermittent fault detection mechanism. Utilizing the same setup as Unit-Under-Test pattern settings for IC-Chip test parameter testing and diagnosis can achieve an accurate diagnosis of an intermittent circumstance. Hardware and behavioralmodeling is a simulation technique where the device or chip itself is used as the simulation model. An isolated IC-Chip can be setup not only to determine bad models and actual chip functionality but even to aid in chip diagnostics and intermittent failure detection. The detection method is setup by utilizing the actual ATE digital test unit and adjusting test parameters and test techniques as applied to the chip. In this case chip vectors and test parameters are sent to the chip by programming the digital test unit then appropriate test adjustments are made to determine if a chip fails intermittently. Intermittent Fault Detection for an individual IC-Chi
simulation-inserted optimization (SIO) is a novel optimization method in electromagnetic (EM) field recently. Quasi-Newton has been proposed to replace decomposition of Upper/Lower matrices in Newton-based SIO with ap...
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ISBN:
(纸本)9798350347401
simulation-inserted optimization (SIO) is a novel optimization method in electromagnetic (EM) field recently. Quasi-Newton has been proposed to replace decomposition of Upper/Lower matrices in Newton-based SIO with approximate inverse of Hessian matrix. This paper aims to apply the SIO using combined quasi-Newton method with Lagrangian method to optimize a four-order waveguide filter.
This paper focuses on the investigation of op amp circuit optimization based on Monte Carlo simulation and PVT simulation, focusing on the performance of the op amp in different operating environments and its optimiza...
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ISBN:
(纸本)9798350377040;9798350377033
This paper focuses on the investigation of op amp circuit optimization based on Monte Carlo simulation and PVT simulation, focusing on the performance of the op amp in different operating environments and its optimization method of key performance indexes. First, the performance of the op amp under different conditions is evaluated through pre-simulation and post-simulation performance analysis. Then, the performance under various combinations of process variables is statistically analyzed using Monte Carlo simulation, and the performance indexes such as gain bandwidth product (GBW), common mode rejection ratio (CMRR), and power supply rejection ratio (PSRR) are examined during the study, and the corresponding optimization strategies are given. Then, the selection of the op-amp structure is analyzed, and the design optimization of the current reference and bias circuits is further carried out. Through mathematical modeling and small-signal analysis, this paper proposes a method to optimize the design of the current source, thus improving the bandwidth and stability of the op amp. In addition, the study utilizes small-signal model-based gain and bandwidth calculations, voltage-swing ratio analysis, and power supply rejection ratio calculations. Finally, through design and simulation optimization, the op-amp design proposed in this paper meets the design specifications in most cases and shows high stability and performance advantages under different conditions.
This paper presents a physics-based via resistance model featuring spatially-resolved conductivity due to surface scattering based on the Fuchs-Sondheimer (FS) theory, grain boundary scattering based on Mayadas-Shatzk...
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ISBN:
(纸本)9798350385182;9798350385175
This paper presents a physics-based via resistance model featuring spatially-resolved conductivity due to surface scattering based on the Fuchs-Sondheimer (FS) theory, grain boundary scattering based on Mayadas-Shatzkes (MS) theory and temperature dependence incorporated in bulk conductivity, spatially-resolved FS (SRFS) and MS models. Based on this comprehensive modeling approach, we develop a 3D simulation framework for copper-based tapered via structure with Ta liner and TaN barrier to evaluate the via resistance. Our results show that the temperature-sensitivity of via resistance mainly stems from the bulk conductivity of copper. Utilizing our physics-based SRFS model, we confirm that the resistance due to surface scattering has a negligible temperature-dependence across a wide range of specularity and interconnect dimensions.
This paper reports on efforts to improve collaboration, traceability, and integrated analysis across development teams in Systems Engineering (SE), namely systems architecting (modeling) and systems verification (simu...
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ISBN:
(纸本)9798350358810;9798350358803
This paper reports on efforts to improve collaboration, traceability, and integrated analysis across development teams in Systems Engineering (SE), namely systems architecting (modeling) and systems verification (simulation) in an industrial SE workflow. Higher process safety and efficiency demand seamless integration between these historically separated domains that handle different levels of detail and maturity with corresponding models. A practical gap is the level of information needed for physical simulation, contra the specified logical system descriptions from a functional perspective in system architectures. We demonstrate a cross-domain collaboration by aligning system interfaces across model abstractions in an integrated tooling approach, augmenting logical models with physical information. We utilize an industrial use case to make the paper more concrete and, in addition to the initial results, report on the lessons learned throughout the design process application and open challenges in real-life continuous engineering environments.
The power oscillation has a bad impact on the safety and economy of power plants and power grids, and the causes and solutions of the power oscillation problem of secondary reheat units are not mature. In order to qui...
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ISBN:
(纸本)9798350377477;9798350377460
The power oscillation has a bad impact on the safety and economy of power plants and power grids, and the causes and solutions of the power oscillation problem of secondary reheat units are not mature. In order to quickly solve the power oscillation problem of the secondary reheat unit, a simulation and analysis method of the power oscillation of the secondary reheat unit considering the characteristics of the valve adjustment was proposed. By analyzing the influence of operating parameters and adjusting parameters on the characteristics of the valve, the modular modeling of the secondary reheat unit is carried out, and the power model considering the secondary reheating process and the actuator model considering the adjusting characteristics of the valve are proposed, then the optimized adjusting parameters are proposed based on this. The simulation analysis was carried out with reference to the actual power oscillation case, which verified the correctness of the theoretical analysis and the effectiveness of the proposed method are provided an effective decision-making reference for the cause finding of the power oscillation of the secondary reheat unit.
In this paper, a new frequency-division control for the energy management of parallel Hybrid Electric Vehicles is proposed. A simplified model of the considered parallel Hybrid Electric Vehicle is introduced, based on...
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ISBN:
(纸本)9798350358513;9798350358520
In this paper, a new frequency-division control for the energy management of parallel Hybrid Electric Vehicles is proposed. A simplified model of the considered parallel Hybrid Electric Vehicle is introduced, based on which the control problem is stated and solved using the proposed frequency-division control algorithm. simulation results showing the operation of the proposed algorithm are finally given and discussed in detail.
Automatic control design for robotic systems is becoming more and more popular. However, this usually involves a significant computational cost, due to the expensive and noisy evaluation of candidate solutions through...
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ISBN:
(数字)9781665479271
ISBN:
(纸本)9781665479271
Automatic control design for robotic systems is becoming more and more popular. However, this usually involves a significant computational cost, due to the expensive and noisy evaluation of candidate solutions through high-fidelity simulation or even real hardware. This work aims at reducing the computational cost of automatic design of behavioral arbitrators through the introduction of a two-step approach. In the first step, the structure of the finite state machine governing the behavioral arbitrator is optimized. To this purpose, a more abstracted model of the robotic system is leveraged in order to significantly reduce the computational cost. In the second step, the close-to-hardware, behavioral parameters are fine-tuned using a high-fidelity model. We show that, for a scenario involving a single robot and multiple tasks to be solved sequentially, using the proposed method results in a significant decrease of the computational cost while reaching the same controller performance both in simulation and reality.
The focus of this research is on simulationmodeling and a multi-agent-based system for consumer deshopping behavior. Most recent work on deshopping analysis has been focused on case studies and theory building. This ...
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