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System Modeling Blog

2 Mar, 2012

Analog Modeling - Part 4

Posted by Mike Jensen

Mike Jensen It’s time to dig a little deeper into the incandescent lamp behavior I introduced in Part 3 of this blog series. My goal is to select a set of equations that best describe the elements of the lamp’s behavior that I want to quantify during simulation. Recall my comment in Part 3 that a lamp has several characteristics worth analyzing including electrical properties, thermal properties, aging … Read More

vhdl-ams training, HDL, analog modeling, Modeling

10 Feb, 2012

Analog Modeling - Part 3

Posted by Mike Jensen

Mike Jensen Welcome to the third installment in my Analog Modeling blog series. In Part 1 I wrote about why equations are important for simulation. In Part 2 I suggested a process flow for turning device equations into a simulation model, and introduced the basic structure of a VHDL-AMS model. Now it’s time to begin the model definition process. As I outlined in Part 2, the first step is deciding what you want … Read More

HDL, analog modeling, Modeling

2 Feb, 2012

Analog Modeling - Part 2

Posted by Mike Jensen

Mike Jensen In Analog Modeling – Part 1 I reviewed the importance of equation selection in the analog modeling process. In a nutshell, the first step in getting good simulation results is choosing equations that best describe the behavior or device you want to analyze. Your analog equation set could be as simple as a single transfer function describing the relationship between the inputs and outputs of a … Read More

HDL, Modeling, analog modeling

25 Jan, 2012

Analog Modeling - Part 1

Posted by Mike Jensen

Mike Jensen I recently spent some time rummaging around my basement. I suppose my basement is not unlike many others — it’s kind of my family’s catch-all storage place for items too big to fit in a closet. Besides housing my HVAC and water heating systems, my basement is home to a variety of holiday decorations, lots of canned, bottled, and bulk food items, a small collection of mismatched folding tables … Read More

Modeling, analog modeling

13 Jan, 2012

Connecting Tools and Processes

Posted by Mike Jensen

Mike Jensen Searching the Internet is like having a giant, international reference library at your fingertips. If you know what you’re looking for and have a reasonable idea of where to look, with a little patience you can usual find some pretty interesting material related to your search topic – okay, you can also find a bunch of stuff you aren’t looking for, but as I often say, “That’s a topic for a different … Read More

Mechatronics, Hardware/software co-design, SystemVision SVX

10 Dec, 2011

Use vs. Experience

Posted by Mike Jensen

Mike Jensen

Whether your company creates airplanes, cars, widgets, or software, product planning is an essential part of the development process. And if your group is like mine, product planning meetings are seldom boring. I am privileged to work with some pretty sharp folks who are very capable engineers, and very passionate about what they do. Our planning discussions are always interesting, and often animated.

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engineering

2 Dec, 2011

Analyzing the Big Picture

Posted by Mike Jensen

Mike Jensen As engineers we often use “system” to describe different levels of design abstraction. Chip designers refer to integrated circuits as systems on chips. Audio designers refer to an amplifier as a system. Aircraft brake designers create systems for stopping aircraft. There truly are a variety of ways to define and implement a system. And most things we call a system are really just a subsystem … Read More

Modeling

21 Nov, 2011

Simulating for Reliability

Posted by Mike Jensen

Mike Jensen An important performance metric for any system is reliability — does the system do what it’s supposed to do, when it’s supposed to do it, time after time, without fault or failure. Obviously, system reliability doesn’t just happen; it’s not just dumb luck when a system delivers flawless performance, whether it’s your car, your cell phone, your garage door opener, or your … Read More

Minitab, Reliability, Experiment Manager

21 Oct, 2011

SystemVision 5.8

Posted by Mike Jensen

Mike Jensen It’s software release time in the SystemVision® offices, and we are pleased to announce that SystemVision 5.8 is ready for immediate download. I say “pleased” for two reasons. First, users will no doubt find good value in the many new features and updates. And second, SystemVision Engineering can take a break from their keyboards, and maybe even take a well-deserved nap (getting a … Read More

LabVIEW, Simulink, Experiment Manager

12 Oct, 2011

Mike Jensen Once in awhile I work with customers who want to move VHDL-AMS models between multiple simulators. The ability to do so is one of the great promises of standard modeling languages and, at face value, should be an easy task. After all, if a language is an industry standard, and multiple simulation tools claim to support it, then moving models between tools should be a plug-and-play process, right? Well, … Read More

Modeling, IEEE 1076.1

26 Sep, 2011

IESF 2011 Moves to Frankfurt

Posted by Mike Jensen

Mike Jensen If you plan to be in Frankfurt, Germany on November 17, mark your calendars for Mentor Graphics’ Automotive and Commercial Vehicles Integrated Electrical Solutions Forum (IESF). You’ll enjoy 26 industry sessions planned specifically for E/E design engineers, engineering managers, and executives in the automotive and commercial vehicle industries. This IESF event will be particularly interesting if your … Read More

IESF

16 Sep, 2011

Simulation Troubleshooting

Posted by Mike Jensen

Mike Jensen

I’ve spent a fair amount of time recently troubleshooting a system simulation from a prospective customer. It’s always an interesting, and sometimes frustrating, process. Fixing simulations can be slow going work. Simulation error messages are often cryptic at best, and the customer’s system is sometimes based on a technology that I know little about. Despite these challenges, however,

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troubleshooting

22 Aug, 2011

Qualities of VHDL-AMS Quantities

Posted by Mike Jensen

Mike Jensen One of the most important things I’ve learned during my 20+ years working with simulation tools is simply this: my simulation results will only be as good as my models. While not a revolutionary concept, it’s none the less a fact of system simulation that anyone using a simulator in their design process knows. But there is an equally important companion principle: my model will only give me the … Read More

Mixed-Signal, IEEE 1076.1, Modeling

11 Aug, 2011

Military & Aerospace IESF 2011

Posted by Mike Jensen

Mike Jensen Mentor Graphics’ Military & Aerospace Integrated Electrical Solutions Forum (IESF) 2011 is coming up fast on the calendar – Tuesday, September 13 in Long Beach, California. This is a companion event to our Automotive IESF 2011 held in Detroit, Michigan in early June. And just like the June event, Military & Aerospace IESF will be chock-full of technical content. The September 13 event focuses … Read More

IESF, Military, Aerospace, System Design

3 Aug, 2011

Touring Johnson Space Center

Posted by Mike Jensen

Mike Jensen There are times in each of our lives when preparation and opportunity come together in a single moment for once in a lifetime experiences. Then there are times when dumb luck rules the day but produces the same result. I would like to say that I am regularly prepared to open the door when opportunity knocks, but more often than not I stumble into worthwhile opportunities, some of which truly are once … Read More

space program, engineering

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