|How to Design Effective Computer-driven Measurement Systems|
ATI's Applied Measurements Engineering course
This three-day course is for engineers, scientists, and managers
who must use systems to understand experimental test
measurements on a daily basis. How do you know your test measurements are valid?
Since NIST traceability actually guarantees little about
your test data, how do you know? Could you prove
validity to your customer? What is the right
measurements solution for your testing requirements? Is it
really as simple as the vendors say? What is your real cost
of invalid, ambiguous data causing retest or, worst of all,
Learn how to design, buy
and operate effective automated measurement systems
providing demonstrably valid test data, the first time.
Fundamental & underlying engineering principles
governing the design and operation of effective automated
systems are demonstrated experimentally.
The result? Skilled people running more effective
testing programs generating unambiguous data, lowered
design verification risk and cost, and delighted customers.
Attendees receive a workbook and the instructor's book,
Applied Measurements Engineering.
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Mr. Charles Wright is a Senior Engineering Specialist in the Environments, Test and Assessment Department, Engineering Technology Group of The Aerospace Corporation. He works in the areas of test measurements, environments, and methods, and assessments of test effectiveness from a cross program perspective. Mr. Wright came to The Aerospace Corporation in 2001 from Northrop Grumman Aerospace Systems. During his three plus decade career there, he lead and managed the provision of advanced test measurement engineering services for space system development, integration and test. He is the author of Applied Measurements Engineering (Prentice Hall, 1995), and100 test-related technical publications. He has taught this course on more than 100 occasions all over North America to clients from US and Government national laboratories and agencies, commercial companies and in academic settings. Mr. Wright has a BS Mechanical Engineering and MS Measurements Engineering from Arizona State University, and an MS in Systems Management from the University of Southern California.
Our counsel is leaning toward the position that there is no conflict of interest but wants to double check. We do need to focus on the test aspects of AEDC's work. I would prefer to teach off-base is possible. It's better for me and the clients. If the venue had to be on the base, I would prefer it in the operating contractor's facility, rather than a a USAF facility. We need to get as far away from the Air Force and AEDC programs as we can on this one.
Contact this instructor (please mention course name in the subject line)
What you will learn:
- How to guarantee your data.
- How to set the crucial system transfer functions to assure
- How to follow the rules for waveshape and spectral
reproduction of data.
- The twelve things you have to control before you can
- How to absolutely eliminate deadly aliasing.
- How to identify and prevent 40% errors in 0.1%
- Foolproof automated methods for noise level
identification and control.
- How to operate successfully in the PC-based data
acquisition system market.
- Basic Measurement Concepts. Fourteen real measurement horror stories and
why they happened. Measurements or instrumentation? Data validity or data
accuracy? Why you want less than 1/16th of the information from your system.
- Measurement System Transfer Functions and Linearity. Frequency and
phase responses -- more complicated than most think. First, second and higher
order systems. Single degree-of-freedom systems and damping. Output/input
- Frequency Content or Wave Shape Reproduction? Rules for the
reproduction of frequency content. Rules for the reproduction of wave shape.
What price do you pay when you violate the rules? How can you recover?
- Non-Self Generating Transducers. Load cells, strain gages, resistance
temperature transducers, piezoresistive and servo transducers, etc. The basic
transducer model. Proper techniques for system set-up and operation.
- Wheatstone Bridge. The bridge as a computer. Bridge equations. Valid shunt
calibration techniques and calculation. The three wire circuit. Up to ten wire
- Self Generating Transducers. Piezoelectric transducers. "Charge" amplifiers
and why they work. Thermoelectricity and thermocouples. The gradient
approach to thermocouple temperature measurements.
- The General Transducer Model and Noise. How all transducers and
components really work. Bulletproof noise level hunting and documentation
procedures. Differential systems and common mode performance.
- Information Conversion. Carrier systems and why they work. Sinusoidal
excitation. Pulse train excitation--zero based and zero centered. Real examples.
- Frequency Analysis. Fourier spectra. Power or auto spectral density. Octave
and one-third octave analyses. Shock response spectra--what do they really tell
- Sampled Measurement Systems. The twelve things you must know before
you sample. Nonsimultaneous or simultaneous sample and hold? Aliasing and
undersampling errors and how to prevent them. What antialiasing filters should
you use and why?
- Data Validation Methodologies. How do you know your data is valid? How
to use your software to answer the question.
- Knowledge-Based System Design Principles. The highest level of system
design. Operating effective measurement systems. World-class examples from
the spacecraft dynamics, thermal, and quasi-static structural test worlds.
- The Subject of Software. Commercial software. Commercial vs. in-house
developed software. Where's the risk?
- The Crucial Stuff They Didn't Teach You in College. The subjects of craft,
skill, responsibility, and professionalism as they relate to test measurements.
For dedicated on-site pricing and availability request information HERE.