LIBRARY
Sources.Tests.Position ​
Test of the Position source component with all ReferenceType enum variants, matching MSL ModelicaTest.Rotational.TestBearingConversion and TranslationalComponents pattern.
Three Position instances are driven by a common Sine reference (amplitude=0.1, frequency=1 Hz) and each drives an Inertia (J=1) with support grounded to Fixed:
pos_filtered: default Filtered mode (f_crit=50 Hz, af=1.3617, bf=0.6180)
pos_exact: Exact mode — spline angle equals input directly
pos_filtered_low: Filtered mode with low critical frequency (f_crit=5 Hz) to show visible filtering
Usage ​
RotationalComponents.Sources.Tests.Position()
Behavior ​
Source ​
dyad
"""
Test of the Position source component with all ReferenceType enum variants,
matching MSL ModelicaTest.Rotational.TestBearingConversion and TranslationalComponents pattern.
Three Position instances are driven by a common Sine reference (amplitude=0.1, frequency=1 Hz)
and each drives an Inertia (J=1) with support grounded to Fixed:
- pos_filtered: default Filtered mode (f_crit=50 Hz, af=1.3617, bf=0.6180)
- pos_exact: Exact mode — spline angle equals input directly
- pos_filtered_low: Filtered mode with low critical frequency (f_crit=5 Hz) to show visible filtering
"""
test component Position
"Sine reference angle signal (amplitude=0.1, frequency=1 Hz)"
sine = BlockComponents.Sources.Sine(amplitude = 0.1, frequency = 1.0) {
"Dyad": {"placement": {"diagram": {"x1": 20, "x2": 120, "y1": 605, "y2": 705}}}
}
"Position source — Filtered with default Bessel filter (f_crit=50 Hz)"
pos_filtered = RotationalComponents.Sources.Position() {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 605, "y2": 705}}}
}
"Inertia driven by filtered position source"
inertia_filtered = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 605, "y2": 705}}}
}
"Position source — Exact (spline tracks input directly)"
pos_exact = RotationalComponents.Sources.Position(ref_type = RotationalComponents.Sources.ReferenceType.Exact()) {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 195, "y2": 295}}}
}
"Inertia driven by exact position source"
inertia_exact = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 195, "y2": 295}}}
}
"Position source — Filtered with low critical frequency (f_crit=5 Hz)"
pos_filtered_low = RotationalComponents.Sources.Position(ref_type = RotationalComponents.Sources.ReferenceType.Filtered(f_crit = 5.0)) {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 400, "y2": 500}}}
}
"Inertia driven by low-f_crit filtered position source"
inertia_filtered_low = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 400, "y2": 500}}}
}
"Fixed ground for all supports"
fixed = RotationalComponents.Components.Fixed() {
"Dyad": {"placement": {"diagram": {"x1": 290, "x2": 390, "y1": 60, "y2": 160}}}
}
relations
connect(sine.y, pos_filtered.phi_ref) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered.spline, inertia_filtered.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered.support, fixed.spline) {
"Dyad": {
"edges": [
{
"S": 1,
"M": [
{"x": 205, "y": 760},
{"x": 270, "y": 760},
{"x": 270, "y": 20},
{"x": 340, "y": 20}
],
"E": 2
}
],
"path": {}
}
}
initial pos_filtered.w = 0
connect(sine.y, pos_exact.phi_ref) {
"Dyad": {
"edges": [{"S": 1, "M": [], "E": -1}, {"S": -1, "M": [{"x": 140, "y": 245}], "E": 2}],
"junctions": [{"x": 140, "y": 655}],
"path": {}
}
}
connect(pos_exact.spline, inertia_exact.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_exact.support, fixed.spline) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 205, "y": 350}], "E": -1},
{"S": -1, "M": [{"x": 270, "y": 20}, {"x": 340, "y": 20}], "E": 2}
],
"junctions": [{"x": 270, "y": 350}],
"path": {}
}
}
connect(sine.y, pos_filtered_low.phi_ref) {
"Dyad": {
"edges": [{"S": 1, "M": [{"x": 140, "y": 655}], "E": -1}, {"S": -1, "M": [], "E": 2}],
"junctions": [{"x": 140, "y": 450}],
"path": {}
}
}
connect(pos_filtered_low.spline, inertia_filtered_low.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered_low.support, fixed.spline) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 205, "y": 555}], "E": -1},
{"S": -1, "M": [{"x": 270, "y": 20}, {"x": 340, "y": 20}], "E": 2}
],
"junctions": [{"x": 270, "y": 555}],
"path": {}
}
}
initial pos_filtered_low.w = 0
metadata {
"Dyad": {
"icons": {"default": "dyad://RotationalComponents/Example.svg"},
"tests": {
"case1": {
"stop": 1.1,
"atol": {
"inertia_filtered.phi": 0.001,
"inertia_exact.phi": 0.001,
"inertia_filtered_low.phi": 0.001
},
"expect": {
"initial": {
"inertia_exact.phi": 0,
"inertia_filtered.phi": 0,
"inertia_filtered_low.phi": 0
},
"signals": ["inertia_filtered.phi", "inertia_exact.phi", "inertia_filtered_low.phi"]
}
}
}
}
}
endFlattened Source
dyad
"""
Test of the Position source component with all ReferenceType enum variants,
matching MSL ModelicaTest.Rotational.TestBearingConversion and TranslationalComponents pattern.
Three Position instances are driven by a common Sine reference (amplitude=0.1, frequency=1 Hz)
and each drives an Inertia (J=1) with support grounded to Fixed:
- pos_filtered: default Filtered mode (f_crit=50 Hz, af=1.3617, bf=0.6180)
- pos_exact: Exact mode — spline angle equals input directly
- pos_filtered_low: Filtered mode with low critical frequency (f_crit=5 Hz) to show visible filtering
"""
test component Position
"Sine reference angle signal (amplitude=0.1, frequency=1 Hz)"
sine = BlockComponents.Sources.Sine(amplitude = 0.1, frequency = 1.0) {
"Dyad": {"placement": {"diagram": {"x1": 20, "x2": 120, "y1": 605, "y2": 705}}}
}
"Position source — Filtered with default Bessel filter (f_crit=50 Hz)"
pos_filtered = RotationalComponents.Sources.Position() {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 605, "y2": 705}}}
}
"Inertia driven by filtered position source"
inertia_filtered = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 605, "y2": 705}}}
}
"Position source — Exact (spline tracks input directly)"
pos_exact = RotationalComponents.Sources.Position(ref_type = RotationalComponents.Sources.ReferenceType.Exact()) {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 195, "y2": 295}}}
}
"Inertia driven by exact position source"
inertia_exact = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 195, "y2": 295}}}
}
"Position source — Filtered with low critical frequency (f_crit=5 Hz)"
pos_filtered_low = RotationalComponents.Sources.Position(ref_type = RotationalComponents.Sources.ReferenceType.Filtered(f_crit = 5.0)) {
"Dyad": {"placement": {"diagram": {"x1": 155, "x2": 255, "y1": 400, "y2": 500}}}
}
"Inertia driven by low-f_crit filtered position source"
inertia_filtered_low = RotationalComponents.Components.Inertia(J = 1) {
"Dyad": {"placement": {"diagram": {"x1": 285, "x2": 385, "y1": 400, "y2": 500}}}
}
"Fixed ground for all supports"
fixed = RotationalComponents.Components.Fixed() {
"Dyad": {"placement": {"diagram": {"x1": 290, "x2": 390, "y1": 60, "y2": 160}}}
}
relations
connect(sine.y, pos_filtered.phi_ref) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered.spline, inertia_filtered.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered.support, fixed.spline) {
"Dyad": {
"edges": [
{
"S": 1,
"M": [
{"x": 205, "y": 760},
{"x": 270, "y": 760},
{"x": 270, "y": 20},
{"x": 340, "y": 20}
],
"E": 2
}
],
"path": {}
}
}
initial pos_filtered.w = 0
connect(sine.y, pos_exact.phi_ref) {
"Dyad": {
"edges": [{"S": 1, "M": [], "E": -1}, {"S": -1, "M": [{"x": 140, "y": 245}], "E": 2}],
"junctions": [{"x": 140, "y": 655}],
"path": {}
}
}
connect(pos_exact.spline, inertia_exact.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_exact.support, fixed.spline) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 205, "y": 350}], "E": -1},
{"S": -1, "M": [{"x": 270, "y": 20}, {"x": 340, "y": 20}], "E": 2}
],
"junctions": [{"x": 270, "y": 350}],
"path": {}
}
}
connect(sine.y, pos_filtered_low.phi_ref) {
"Dyad": {
"edges": [{"S": 1, "M": [{"x": 140, "y": 655}], "E": -1}, {"S": -1, "M": [], "E": 2}],
"junctions": [{"x": 140, "y": 450}],
"path": {}
}
}
connect(pos_filtered_low.spline, inertia_filtered_low.spline_a) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "path": {}}}
connect(pos_filtered_low.support, fixed.spline) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 205, "y": 555}], "E": -1},
{"S": -1, "M": [{"x": 270, "y": 20}, {"x": 340, "y": 20}], "E": 2}
],
"junctions": [{"x": 270, "y": 555}],
"path": {}
}
}
initial pos_filtered_low.w = 0
metadata {
"Dyad": {
"icons": {"default": "dyad://RotationalComponents/Example.svg"},
"tests": {
"case1": {
"stop": 1.1,
"atol": {
"inertia_filtered.phi": 0.001,
"inertia_exact.phi": 0.001,
"inertia_filtered_low.phi": 0.001
},
"expect": {
"initial": {
"inertia_exact.phi": 0,
"inertia_filtered.phi": 0,
"inertia_filtered_low.phi": 0
},
"signals": ["inertia_filtered.phi", "inertia_exact.phi", "inertia_filtered_low.phi"]
}
}
}
}
}
endTest Cases ​
Test Case case1 ​
julia
plt
julia
plt
julia
plt