a rope slides frictionlessly down the edge of a table

Applications:
- Hollow Cylinder
- a rope slides frictionlessly down the edge of a table
Scripting language DELACE

diff --git a/AESL/Template.AESL b/AESL/Template.AESL
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--- a/AESL/Template.AESL
+++ /dev/null
@@ -1,26 +0,0 @@
-IDENTIFICATION DIVISION
-PROGRAM-ID ...
-VERSION ...
-COMMENT ...
-
-ENVIRONMENT DIVISION
-ENGINE Anabrid-THAT
-TIMEBASE 1ms
-REQUIRES ...
-
-DATA DIVISION
-INPUT ...
-OUTPUT OUTPUT.X ...
-OUTPUT OUTPUT.Y ...
-OUTPUT OUTPUT.Z ...
-OUTPUT OUTPUT.U ...
-COEFFICIENT.n ...
-
-PROGRAM DIVISION
-# INTEGRATOR is inverting!
-# SUMMER is inverting!
-...
-
-OPERATION DIVISION
-MODE REPEAT
-OP-TIME ...

diff --git a/Analog Engine Example Applications.odt b/Analog Engine Example Applications.odt
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diff --git a/Analog Engine Scripting Language.odt b/Analog Engine Scripting Language.odt
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diff --git a/DEscription Language for Analog Circuit Engines.odt b/DEscription Language for Analog Circuit Engines.odt
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diff --git a/Description language for ANalog Circuit Engines.odt b/Description language for ANalog Circuit Engines.odt
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diff --git a/AESL/Anabrid-THAT.ENGINE b/scripts/Anabrid-THAT.ENGINE
similarity index 100%
rename from AESL/Anabrid-THAT.ENGINE
rename to scripts/Anabrid-THAT.ENGINE

diff --git a/AESL/Damped Harmonic Osciallator scaled.AESL b/scripts/Damped Harmonic Osciallator scaled.AESL
similarity index 100%
rename from AESL/Damped Harmonic Osciallator scaled.AESL
rename to scripts/Damped Harmonic Osciallator scaled.AESL

diff --git a/AESL/Damped Harmonic Oscillator.AESL b/scripts/Damped Harmonic Oscillator.AESL
similarity index 100%
rename from AESL/Damped Harmonic Oscillator.AESL
rename to scripts/Damped Harmonic Oscillator.AESL

diff --git a/AESL/Radioactive Decay.AESL b/scripts/Radioactive Decay.AESL
similarity index 100%
rename from AESL/Radioactive Decay.AESL
rename to scripts/Radioactive Decay.AESL

diff --git a/AESL/TP1 03.08 Charge in em field.AESL b/scripts/TP1 03.08 Charge in em field.AESL
similarity index 100%
rename from AESL/TP1 03.08 Charge in em field.AESL
rename to scripts/TP1 03.08 Charge in em field.AESL

diff --git a/AESL/TP1 04.10 MassOnSphere.AESL b/scripts/TP1 04.10 MassOnSphere.AESL
similarity index 100%
rename from AESL/TP1 04.10 MassOnSphere.AESL
rename to scripts/TP1 04.10 MassOnSphere.AESL

diff --git a/AESL/TP1 04.11 TwoRaindrops.AESL b/scripts/TP1 04.11 TwoRaindrops.AESL
similarity index 100%
rename from AESL/TP1 04.11 TwoRaindrops.AESL
rename to scripts/TP1 04.11 TwoRaindrops.AESL

diff --git a/AESL/TP1 04.12 Harmonic Oscillator.AESL b/scripts/TP1 04.12 Harmonic Oscillator.AESL
similarity index 100%
rename from AESL/TP1 04.12 Harmonic Oscillator.AESL
rename to scripts/TP1 04.12 Harmonic Oscillator.AESL

diff --git a/AESL/TP1 05.15 Comet.AESL b/scripts/TP1 05.15 Comet.AESL
similarity index 100%
rename from AESL/TP1 05.15 Comet.AESL
rename to scripts/TP1 05.15 Comet.AESL

diff --git a/AESL/TP1 06.18 Mass in Tube.AESL b/scripts/TP1 06.18 Mass in Tube.AESL
similarity index 100%
rename from AESL/TP1 06.18 Mass in Tube.AESL
rename to scripts/TP1 06.18 Mass in Tube.AESL

diff --git a/AESL/TP1 07.19 Falling Mass.AESL b/scripts/TP1 07.19 Falling Mass.AESL
similarity index 100%
rename from AESL/TP1 07.19 Falling Mass.AESL
rename to scripts/TP1 07.19 Falling Mass.AESL

diff --git a/AESL/TP1 07.19 Falling Mass.DANCE b/scripts/TP1 07.19 Falling Mass.DELACE
similarity index 100%
rename from AESL/TP1 07.19 Falling Mass.DANCE
rename to scripts/TP1 07.19 Falling Mass.DELACE

diff --git a/scripts/TP1 08.22 Hollow Cylinder.AESL b/scripts/TP1 08.22 Hollow Cylinder.AESL
new file mode 100644 (file)
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+++ b/scripts/TP1 08.22 Hollow Cylinder.AESL
@@ -0,0 +1,33 @@
+IDENTIFICATION DIVISION
+PROGRAM-ID HollowCylinder
+VERSION 20240312
+COMMENT A homogeneous hollow cylinder (mass m, ration inner to outer radius epsilon) is connected to a massless spring (constant lambda). 
+COMMENT The system is deflected from its rest position by the distance a. 
+COMMENT The cylinder rolls without sliding. 
+COMMENT x'' = - 2*lambda * 1/m * 1/(3+epsilon²) * x
+
+ENVIRONMENT DIVISION
+ENGINE Anabrid-THAT
+TIMEBASE 1ms
+REQUIRES COEFFICIENT 4, INTEGRATOR 2, INVERTER 1
+
+DATA DIVISION
+OUTPUT OUTPUT.X x
+COEFFICIENT.1 2*lambda
+COEFFICIENT.2 1/m
+COEFFICIENT.3 1/(3+epsilon²) # = 1/3 (0,333) for epsilon=0 and 1/4 (0,25) for epsiolon=1 or anything in between
+COEFFICIENT.4 a 
+
+PROGRAM DIVISION
++1 -> COEFFICIENT.A -> a
+
+x'' -> INTEGRATOR -> -x'
+-x', IC:a -> INTEGRATOR -> x
+x -> COEFFICIENT.2*lambda -> 2*lambda*x
+2*lambda*x -> COEFFICIENT.1/m -> 2*lambda*1/m*x
+2*lambda*1/m*x -> COEFFICIENT.1/(3+epsilon²) -> 2*lambda*1/m*1/(3+epsilon²)*x
+2*lambda*1/m*1/(3+epsilon²)*x -> INVERTER -> -2*lambda*1/m*1/(3+epsilon²)*x = x''
+
+OPERATION DIVISION
+MODE REPEAT
+OP-TIME 52ms

diff --git a/scripts/TP1 08.23a stick falling.DELACE b/scripts/TP1 08.23a stick falling.DELACE
new file mode 100644 (file)
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+coefficient(1): a
+
+integrate (y'') -> -y':
+   IC: +1
+integrate (-y') -> y
+invert (y) -> -y
+sin = y
+
+integrate (omega') -> -omega
+a * sin -> a_times_sin
+omega' = a_times_sin
+
+invert (-omega) -> omega
+multiply (omega, omega) -> omega²
+multiply (omega², -y) -> -omega²y
+y'' = -omega²y

diff --git a/scripts/TP1 09.26 rope over table edge.DELACE b/scripts/TP1 09.26 rope over table edge.DELACE
new file mode 100644 (file)
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+# a rope slides frictionlessly down the edge of a table
+# x'' = g/l * x
+
+coefficient(1): 1 -> x0'   # initial speed
+coefficient(2): -1 -> -x0  # initial length of rope already over the edge of the table
+coefficient(3): g/l        # gravity constant (g) devided by the length of the rope (l)
+
+iintegrate (x'') -> -x':
+   IC: x0'
+iintegrate (-x') -> x:
+   IC: -x0
+x * g/l -> g/l*x = x''
+
+# note: positive x-axis in the direction of the falling rope (so down)
+#       for visualization, -x is displayed
+invert (x) -> -x # goes to output x