September 8, 2022
All electronic devices must meet electromagnetic compatibility (EMC) requirements for government regulations and quality standards. Across industries, design teams seek to reduce physical prototypes and the risk of test failure using digital simulation technologies.
In the previous installment of this series, we described the computational electromagnetic concepts underlying modern simulation techniques. The full-wave electromagnetic, transmission line theory, transient circuit, and fluid solvers are the fundamental technologies that enable simulation.
This discussion will describe the platform technologies that enable importing of design information, co-simulation techniques between multiple solvers, and optimization tools used for EMC simulation to guide design and certification of products.
Figure 1. Simulated electrostatic discharge (ESD) gun and air conductivity effects using EMA3D Cable.
EMC concerns impact product development teams across a wide range of industries. This is a consequence of the “electrification” of consumer, industrial, and military/aerospace designs. The electronic components in these designs are integral to the creation of new products to enhance feature sets, expand addressable applications, and improve overall reliability and functional lifetime.
As EMC certification becomes the norm for developers, virtual prototyping is an essential component of many design methodologies. There are many advantages to prototyping designs. For example, failing EMC testing and correcting problems early in the design cycle is much less expensive than experiencing the same failure late in the design process or during testing and verification of a physical prototype. Early software prototyping also reduces the probability of an EMC certification test failure later on.
The occurrence and consequences of EMC test failures are not trivial. As an empirical rule of thumb, the lack of a virtual/software-based prototyping workflow early in development can result in 50% of new products failing one EMC test and roughly 30% failing either multiple tests or the same test repeatedly.1
Software-based prototyping is increasingly based on employing a suite of tools. Combined with new techniques to reduce the initial analysis effort, mechanical and electronic computer-aided design (CAD) permit rapid development of simulation models that are accurate representations of the actual product. The goal, of course, is to design better products by understanding and predicting electromagnetic interference (EMI) hazards. Optimization and model-based systems engineering (MBSE) enable design trade-offs before any physical prototypes are developed.
But this leads to some very natural questions from the product developers:
Ansys and EMA will discuss these questions in great depth in the second installment of the “Foundations and Integrations of EMA3D” webinar series. The webinar, on September 22, will go into technical detail on the following topics:
We look forward to seeing you at the webinar and answering your questions. Sign up for the webinar here.
We’re here to answer your questions and look forward to speaking with you. A member of our Ansys sales team will contact you shortly.