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diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/interface_models/parallel-plates4.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/interface_models/parallel-plates4.ams new file mode 100644 index 000000000..a4ebbe219 --- /dev/null +++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/interface_models/parallel-plates4.ams @@ -0,0 +1,161 @@ + +-- Copyright (C) 2000-2002 The University of Cincinnati. +-- All rights reserved. + +-- This file is part of VESTs (Vhdl tESTs). + +-- UC MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE +-- SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +-- IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, +-- OR NON-INFRINGEMENT. UC SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY +-- LICENSEE AS A RESULT OF USING, RESULT OF USING, MODIFYING OR +-- DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. + +-- By using or copying this Software, Licensee agrees to abide by the +-- intellectual property laws, and all other applicable laws of the U.S., +-- and the terms of this license. + +-- You may modify, distribute, and use the software contained in this +-- package under the terms of the "GNU GENERAL PUBLIC LICENSE" version 2, +-- June 1991. A copy of this license agreement can be found in the file +-- "COPYING", distributed with this archive. + +-- You should have received a copy of the GNU General Public License +-- along with VESTs; if not, write to the Free Software Foundation, +-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +-- --------------------------------------------------------------------- +-- +-- $Id: parallel-plates4.ams,v 1.1 2002-03-27 22:11:17 paw Exp $ +-- $Revision: 1.1 $ +-- +-- --------------------------------------------------------------------- + +-- This model was tested and compared with SPICE. +-- The results match with SPICE +-- The model implements a simple parallel plate cap with just +-- one top and one bottom plate. +-- The top and bottom plates have been divided into 4 sub plates. +-- Actually its like 4 parallel-plate subsections have been connected +-- to form the capacitor. +-- simulation time 2e11. +-- Initially proposed by Dr. Carter. + +PACKAGE electricalSystem IS + NATURE electrical IS real ACROSS real THROUGH GROUND REFERENCE; + FUNCTION SIN (X : real ) RETURN real; +END PACKAGE electricalSystem; + +use work.electricalSystem.all; +entity plate is + generic ( + cell_resistance : real := 1000.0 + ); + + port ( + terminal up, down, left, right, top : electrical + ); +end entity plate; + +architecture behav of plate is + +quantity Vup across Iup through up to top ; +quantity Vdown across Idown through down to top ; +quantity Vleft across Ileft through left to top ; +quantity Vright across Iright through right to top ; + +begin + + Rup : Vup == Iup * cell_resistance ; + Rdown : Vdown == Idown * cell_resistance ; + Rleft : Vleft == Ileft * cell_resistance ; + Rright : Vright == Iright * cell_resistance ; +end behav ; + + +use work.electricalSystem.all; + +entity parallel_plate_cap is + port ( + terminal up1, up2, down1, down2, left1, left2, right1, right2, top1, top2: electrical + ); +end entity; + +architecture struc of parallel_plate_cap is + component plate is + generic ( + cell_resistance : real := 1000.0 + ); + port ( + terminal up, down, left, right, top : electrical + ); + end component ; + for all : plate use entity work.plate(behav); + + -- this need not be in the port list but i am adding it + -- to observe vcap uniquely. + --terminal top1, top2 : electrical ; + quantity vcap across icap through top1 to top2 ; + quantity vrgnd across irgnd through top2 ; +-- quantity vs1 across left1 to left2; +-- quantity vs2 across right1 to right2; +-- quantity vs3 across up1 to up2; +-- quantity vs4 across down1 to down2; + + constant cell_cap : real := 1.0e-8; + +begin + plate1 : plate port map ( up1, down1, left1, right1, top1) ; + plate2 : plate port map ( up2, down2, left2, right2, top2) ; + --plate2 : plate port map ( up2, down2, left2, right2, ground) ; + + capeqn : icap == cell_cap * vcap'dot; + -- there should be some ground + resgnd : vrgnd == irgnd * 1000.0 ; +-- vsrc1 : vs1 == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + -- * real(time'pos(now)) * 1.0e-15); + -- vsrc2 : vs2 == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + -- * real(time'pos(now)) * 1.0e-15); + -- vsrc3 : vs3 == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + -- * real(time'pos(now)) * 1.0e-15); + -- vsrc4 : vs4 == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + -- * real(time'pos(now)) * 1.0e-15); + +end struc ; + +use work.electricalSystem.all; + +entity real_cap is +end entity ; + +architecture struct of real_cap is + component parallel_plate_cap is + port ( + terminal up1, up2, down1, down2, left1, left2, right1, right2, top1, top2: electrical + ); + end component ; + + for all : parallel_plate_cap use entity work.parallel_plate_cap(struc); + + terminal u1, u2, u3 , u4, d1, d2, d3, d4, l1, l2 , r1, r2, r3, r4 , t1, t2, t3, t4: electrical ; + terminal d11, d21, d31, d41, l11, l21 , r11, r21, r31, r41 , t11, t21, t31, t41: electrical ; + -- not needed. + --terminal l3 , l4 : electrical ; + + quantity vs across l1 to l2 ; + quantity vs1 across l11 to l21 ; + + +begin + + p1 : parallel_plate_cap port map (u1, u2, d1, d2, l1, l2, r1, r2, t1, t2); + p2 : parallel_plate_cap port map (u3, u4, d3, d4, r1, r2, r3, r4, t3, t4); + p3 : parallel_plate_cap port map (d1, d2, d11, d21, l11, l21, r11, r21, t11, t21); + p4 : parallel_plate_cap port map (d3, d4, d31, d41, r11, r21, r31, r41, t31, t41); + + vsrc : vs == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + * real(time'pos(now)) * 1.0e-15); + vsrc1 : vs1 == 5.0 * sin(2.0 * 3.1415 * 10.0e3 --sine source + * real(time'pos(now)) * 1.0e-15); + +end ; |