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