IEEE standard VHDL packages for MEDS

IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS IEEE standard VHDL packages for MEDS

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IEEE Std 1076.1.1™-2004

IEEE Standard VHDL Analog and

Mixed-Signal Extensions—Packages for Multiple Energy Domain Support

3 Park Avenue, New York, NY10016-5997, USA

IEEE Computer Society

Sponsored by the

Design Automation Standards Committee

17 June 2005Print: SH95310PDF: SS95310

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Recognized as an

American National Standard (ANSI)

The Institute of Electrical and Electronics Engineers, Inc.

3 Park Avenue, New York, NY 10016-5997, USA

IEEE is a registered trademark in the U.S Patent & Trademark Office, owned by the Institute of Electrical and Electronics Engineers, Incorporated.

IEEE-SA Standards Board

Abstract: This standard defines a collection of VHDL 1076.1 packages, compatible with

IEEE Std 1076.1TM-1999, along with recommendations for conforming use, in order to facilitate theinterchange of simulation models of physical components and subsystems The packages includethe definition of standard types, subtypes, natures, and constants for modeling in multiple energydomains (electrical, fluidic, mechanical, etc.)

Keywords: interchange, modeling, model interchange, model portability, multidisciplinary,

multidisciplinary modeling, packages, portability, standard packages, standard VHDL packages,VHDL, VHDL-AMS

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IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the

IEEE Standards Association (IEEE-SA) Standards Board The IEEE develops its standards through a consensusdevelopment process, approved by the American National Standards Institute, which brings together volunteersrepresenting varied viewpoints and interests to achieve the final product Volunteers are not necessarily members of theInstitute and serve without compensation While the IEEE administers the process and establishes rules to promote fairness

in the consensus development process, the IEEE does not independently evaluate, test, or verify the accuracy of any of theinformation contained in its standards

Use of an IEEE Standard is wholly voluntary The IEEE disclaims liability for any personal injury, property or otherdamage, of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resultingfrom the publication, use of, or reliance upon this, or any other IEEE Standard document

The IEEE does not warrant or represent the accuracy or content of the material contained herein, and expressly disclaimsany express or implied warranty, including any implied warranty of merchantability or fitness for a specific purpose, or that

the use of the material contained herein is free from patent infringement IEEE Standards documents are supplied “AS IS.”

The existence of an IEEE Standard does not imply that there are no other ways to produce, test, measure, purchase, market,

or provide other goods and services related to the scope of the IEEE Standard Furthermore, the viewpoint expressed at thetime a standard is approved and issued is subject to change brought about through developments in the state of the art andcomments received from users of the standard Every IEEE Standard is subjected to review at least every five years forrevision or reaffirmation When a document is more than five years old and has not been reaffirmed, it is reasonable toconclude that its contents, although still of some value, do not wholly reflect the present state of the art Users are cautioned

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Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute ofElectrical and Electronics Engineers, Inc., provided that the appropriate fee is paid to Copyright Clearance Center Toarrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222 Rosewood Drive,Danvers, MA 01923 USA; +1 978 750 8400 Permission to photocopy portions of any individual standard for educationalclassroom use can also be obtained through the Copyright Clearance Center

NOTE−Attention is called to the possibility that implementation of this standard may require use of subjectmatter covered by patent rights By publication of this standard, no position is taken with respect to the exist-ence or validity of any patent rights in connection therewith The IEEE shall not be responsible for identifyingpatents for which a license may be required by an IEEE standard or for conducting inquiries into the legal valid-ity or scope of those patents that are brought to its attention

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This set of packages provides a standard for the declaration of the most frequently used constants and typesrequired for multiple energy domain modeling Use of these packages with their defined types, constants andattributes is intended to provide a mechanism for writing VHDL models (compliant with IEEE Std 1076.1-1999) that are portable and interoperable with other VHDL models adhering to this standard The standardserves a broad class of applications

Notice to users

Errata

Errata, if any, for this and all other standards can be accessed at the following URL: http://standards.ieee.org/reading/ieee/updates/errata/index.html Users are encouraged to check this URL forerrata periodically

This introduction in not part of IEEE Std 1076.1.1-2004, IEEE Standard VHDL Analog and Mixed-SignalExtenstions—Packages for Multiple Energy Domain Support

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*Member Emeritus

Also included are the following nonvoting IEEE-SA Standards Board liaisons:

Satish K Aggarwal, NRC Representative Richard DeBlasio, DOE Representative Alan Cookson, NIST Representative

Peter SchwarzMichael SeibtRichard ShiJohn ShieldsMarius SidaDarrell TeegardenAlain VachouxJohn WillisMark Zwolinski

H Alan MantoothTimothy McBrayer

Egbert MolenkampCharles NgetheSerafin A Perez-LopezFrancesco SforzaJohn ShieldsGil ShultzAlain VachouxSrinivasa VemuruPeter R WilsonMark Zwolinski

Hermann KochThomas J McGean

Daleep C MohlaPaul Nikolich

T W OlsenRonald C PetersenGary S RobinsonFrank StoneMalcolm V ThadenDoug ToppingJoe D Watson

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Contents

1 Overview 1

1.1 Scope 1

1.2 Purpose 2

1.3 System of units 2

1.4 IEEE math package 2

2 Definitions 2

3 Constants 2

3.1 Usage 3

3.2 FUNDAMENTAL_CONSTANTS 3

3.3 MATERIAL_CONSTANTS 5

4 Energy domain packages 6

4.1 ENERGY_SYSTEMS 6

4.2 ELECTRICAL_SYSTEMS 8

4.3 MECHANICAL_SYSTEMS 10

4.4 RADIANT_SYSTEMS 13

4.5 THERMAL_SYSTEMS 14

4.6 FLUIDIC_SYSTEMS 15

v

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IEEE Standard VHDL Analog and

Mixed-Signal Extensions—Packages for Multiple Energy Domain Support

This standard defines a collection of VHDL 1076.1 packages, compatible with IEEE Std 1076.1™-1999,1, 2

along with recommendations for conforming use, in order to facilitate the interchange of simulation models

of physical components and subsystems The packages include the definition of standard types, subtypes, natures, and constants for modeling in multiple energy domains (electrical, fluidic, mechanical, etc.)

The packages are intended for use primarily in the modeling of multiple energy domain systems The range

of operation of the packages is not defined in this standard, but is intended to be valid across a wide range

of disciplines and applications

This standard is embodied in the package declarations for the following packages:

2 IEEE publications are available from the Institute of Electrical and Electronics Engineers, Inc., 445 Hoes Lane, Piscataway, NJ

08854, USA (http://standards.ieee.org/).

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IEEE Std 1076.1.1-2004 IEEE Standard VHDL Analog and Mixed-Signal Extensions—Packages for Multiple Energy Domain Support

The packages were chosen for two purposes The first purpose was to define a set of basic physical constants (either with or without default values) so that models written using these packages could have a common basis for modeling physical systems The second purpose was to define a set of types and natures that would provide a common framework for modeling physical systems across a range of commonly used energy domains These purposes enable models written using this standard to contain the same physical constants, but also ensure that the interfaces are consistent, correct, and maintain interoperability

System of units

The International System of Units, universally abbreviated SI (from the French Le Système International d'Unités), is the modern metric system of measurement, and is internationally recognized The SI system of units is used in this standard to ensure that the packages are consistent, correct, and internationally

interoperable In practice this means compliance with IEEE/ASTM SI 10™-2002 Due to the inclusion of

machine readable text in this standard, it has been necessary to use mathematical notation using the syntax adopted by IEEE Std 1076.1-1999 This is a specific exception to the general SI usage in this standard

IEEE math package

This standard uses the VHDL mathematical packages in IEEE Std 1076.2™-1996 for the definition of basic mathematical types and operators

Definitions

For the purposes of this standard, the following terms and definitions apply The Authoritative Dictionary

of IEEE Standards, Seventh Edition, should be referenced for terms not defined in this clause

2.1 unit: Attribute defined as a string that is used to define the name of the fundamental unit of the declared

type For example, for the quantity voltage in electrical systems, the UNIT is defined as "volt."

2.2 symbol: Attribute defined as a string that is used to define the symbol of the fundamental unit of the

declared type For example, for the quantity voltage in electrical systems the symbol is defined as "V."

Constants

The constants shall be divided into two classes: fixed and user-definable The fixed constants shall be fundamental physical constants that have accepted values The user-definable constants shall be defined as deferred constants, allowing them to be defined in a package body by the user This allows the package to contain names of commonly used constants, without restricting the value to specific cases The constants package shall use the MATH_REAL package from the IEEE library

2

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This source file is an essential part of IEEE Std 1076.1.1-2004

IEEE Standard Packages for Multiple Energy Domain Support

This source file may not be copied, sold, or included with software

that is sold without written permission from the IEEE Standards

Department This source file may be used to implement this standard

and may be distributed in compiled form in any manner so long as the

compiled form does not allow direct decompilation of the original

source file

This source file may be copied for individual use between licensed users This source file is provided on an AS IS basis The IEEE disclaims ANY

WARRANTY EXPRESS OR IMPLIED INCLUDING ANY WARRANTY OF MERCHANTABILITY

AND FITNESS FOR USE FOR A PARTICULAR PURPOSE The user of the source

file shall indemnify and hold IEEE harmless from any damages or liability arising out of the use thereof

Title: Standard VHDL Packages for Multiple Energy Domain Support

(IEEE 1076.1.1–2004, FUNDAMENTAL_CONSTANTS)

Library: This package shall be compiled into a library

symbolically named IEEE

Constant Description Default value Uncertainty

- - - -

PHYS_Q Electronic charge 1.602_176_462e-19 0.000_000_063e-19

PHYS_EPS0 Permittivity of vacuum 8.854_187_817e-12 exact

PHYS_MU0 Permeability of vacuum 4.0e-7*pi exact

PHYS_K Boltzmann’s constant 1.380_650_3e-23 0.000_002_4e-23

PHYS_GRAVITY Accel due to gravity 9.806_65 exact

PHYS_CTOK Convert degrees C->K 273.15 exact

PHYS_C Velocity of light 299_792_458.0 exact

PHYS_H Planck’s constant 6.626_068_76e-34 0.000_000_52e-34

PHYS_H_OVER_2_PI Planck’s constant/2*Pi PHYS_H/MATH_2_PI 0.000_000_82e-34

- Version : 1.0

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library IEEE;

use IEEE.MATH_REAL.all;

package FUNDAMENTAL_CONSTANTS is

Declaration

attribute SYMBOL : STRING;

attribute UNIT : STRING;

Physical Constant Definitions

Electronic charge <COULOMB>

constant PHYS_Q : REAL := 1.602_176_462e-19;

Permittivity of vacuum <FARADS/METER>

constant PHYS_EPS0 : REAL := 8.854_187_817e-12;

Permeability of vacuum <HENRIES/METER>

constant PHYS_MU0 : REAL := 4.0e-7 * MATH_PI;

Boltzmann's constant <JOULES/KELVIN>

constant PHYS_K : REAL := 1.380_650_3e-23;

Acceleration due to gravity <METERS/SECOND_SQUARED>

constant PHYS_GRAVITY : REAL := 9.806_65;

Conversion between degrees Celsius and Kelvin

constant PHYS_CTOK : REAL := 273.15;

Velocity of light in a vacuum <METERS/SECOND>

constant PHYS_C : REAL := 299_792_458.0;

Planck’s constant

constant PHYS_H : REAL := 6.626_068_76e-34;

Planck’s constant divided by 2 pi

constant PHYS_H_OVER_2_PI : REAL := PHYS_H/MATH_2_PI;

common scaling factors

constant YOCTO : REAL := 1.0e-24;

constant ZEPTO : REAL := 1.0e-21;

constant ATTO : REAL := 1.0e-18;

constant FEMTO : REAL := 1.0e-15;

constant PICO : REAL := 1.0e-12;

constant NANO : REAL := 1.0e-9;

constant MICRO : REAL := 1.0e-6;

constant MILLI : REAL := 1.0e-3;

constant CENTI : REAL := 1.0e-2;

constant DECI : REAL := 1.0e-1;

constant DEKA : REAL := 1.0e+1;

constant HECTO : REAL := 1.0e+2;

constant KILO : REAL := 1.0e+3;

constant MEGA : REAL := 1.0e+6;

constant GIGA : REAL := 1.0e+9;

constant TERA : REAL := 1.0e+12;

constant PETA : REAL := 1.0e+15;

constant EXA : REAL := 1.0e+18;

constant ZETTA : REAL := 1.0e+21;

constant YOTTA : REAL := 1.0e+24;

alias DECA is DEKA;

end package FUNDAMENTAL_CONSTANTS;

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