Analytical models to describe coupling between different directions of motion are derived using energy methods and verified for the U-spring, crab-leg spring and the serpentine spring. Finite element analyses (FEA) are done for a range of spring dimensions for each spring type in order to verify the models and determine the validity range. The models for the serpentine spring are then incorpora...

There is the magnetic coupling among control windings of controllable reactor of transformer type (CRT), the decoupling integrated magnetic technology is applied to the structure design of CRT in this paper. To realize the decoupling among the control windings we propose a magnetic integrated structure of CRT by providing low magnetic resistance magnetic circuit for control windings magnetic fl...

Substrate noise generated by large digital circuits degrades the performance of analog circuits sharing the same substrate. To simulate this performance degradation, the total amount of substrate noise must be known. For large digital circuits, the substrate simulation is however not feasible with a transistor-level simulator due to the long simulation times and high memory requirements. We are...

This paper presents methods for early quantification of digital to analog noise coupling at behavioral level. The methods enable designers to both verify the behavior of their mixed-signal architecture and its sensitivity to noise coupling. The high-level noise coupling simulation models are implemented as extensions to SystemC.

Energy simulation (ES) and computational fluid dynamics (CFD) provide important and complementary information for building energy and indoor environment designs. A coupled ES and CFD simulation can eliminate many assumptions employed in the separate ES and CFD computations and thus provide more accurate results. Through theoretical analysis and numerical experiment, this study verified that the...

While previous studies on substrate coupling focused mostly on noise induced through drain-bulk capacitance, substrate coupling from planar spiral inductors at radio frequency (RF) via the oxide capacitance has not been reported. This paper presents the experimental and simulation results of substrate noise induced through planar inductors. Experimental and simulation results reveal that isolat...

A component-based simulation framework is a favorable choice for many multi-scale simulations, which requires dedicated coupling to support flexible data communication/exchange between components, computational parallelism and on-demand dynamic load balancing. In this paper, authors first present the considerations in the course of design and implementation of a coupling component to support in...

This paper focuses on coupling of simulation and optimization techniques, both representing an integrated part of modern design and supervision practices in management sciences, industry and engineering. After discussing the different possible connotations of the concept of simulation optimization coupling, we explicitly describe the integration of two commercial-off-the-shelf (COTS) industry-s...

The paper documents a new transformer model in ATPDraw called XFMR. This model handles 3-phase transformers with two or three windings. Autotransformers and all Wye and Delta couplings are supported. The model includes an inverse inductance matrix for the leakage description, optional frequency dependent winding resistance, capacitive coupling, and a topologically correct core model (3and 5-leg...

Numerical simulations involving multiple, physically different domains can be solved effectively by coupling simulation programs, or solvers, in a partitioned approach. This means that it is possible to use sophisticated solvers for the individual domains. The coordination of the different solvers is commonly handled by a coupling shell. A coupling shell synchronizes the execution of the solver...