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LimiterTest.md

LimiterTest ​

Test harness for the Limiter component that constrains signals to specified bounds.

This test component creates a signal chain that feeds a high-amplitude sine wave through an integrator and then into a limiter with bounds at -3 and 3. The limiter constrains the integrated sine wave output to stay within the specified bounds, demonstrating how signal limiting works in practice. The test includes verification of expected output values.

Usage ​

BlockComponents.LimiterTest()

Behavior ​

[connect(sine+y(t),integrator+u(t))connect(integrator+y(t),limiter+u(t))limiter.y(t)=clamp(limiter.u(t),limiter.y_min,limiter.y_max)dintegrator.x(t)dt=integrator.kintegrator.u(t)integrator.y(t)=integrator.x(t)sine.y(t)=sine.offset+sine.amplitudeifelse(t≥sine.start_time,sin⁡(sine.phase+6.2832sine.frequency(−sine.start_time+t)),sin⁡(sine.phase))]

Source ​

dyad
"""
Test harness for the Limiter component that constrains signals to specified bounds.

This test component creates a signal chain that feeds a high-amplitude sine wave through
an integrator and then into a limiter with bounds at -3 and 3. The limiter constrains the
integrated sine wave output to stay within the specified bounds, demonstrating how signal
limiting works in practice. The test includes verification of expected output values.
"""
test component LimiterTest
  "Limiter block that constraints signals between -3 and 3"
  limiter = Limiter(y_max = 3, y_min = -3) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 280, "y1": 20, "x2": 380, "y2": 120, "rot": 0}
      }
    }
  }
  "Integrator block that accumulates the input signal"
  integrator = Integrator() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 150, "y1": 20, "x2": 250, "y2": 120, "rot": 0}
      }
    }
  }
  "Sine wave generator with large amplitude to drive the system"
  sine = Sine(amplitude = 4 * π, frequency = 1) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 20, "y1": 20, "x2": 120, "y2": 120, "rot": 0}
      }
    }
  }
relations
  "Connect sine output to integrator input"
  connect(sine.y, integrator.u) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  "Connect integrator output to limiter input"
  connect(integrator.y, limiter.u) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
metadata {
  "Dyad": {
    "icons": {"default": "dyad://BlockComponents/Example.svg"},
    "tests": {
      "case1": {
        "stop": 1,
        "atol": {"limiter.y": 0.000001},
        "expect": {"signals": ["limiter.y"], "final": {"limiter.y": 0}}
      }
    }
  }
}
end
Flattened Source
dyad
"""
Test harness for the Limiter component that constrains signals to specified bounds.

This test component creates a signal chain that feeds a high-amplitude sine wave through
an integrator and then into a limiter with bounds at -3 and 3. The limiter constrains the
integrated sine wave output to stay within the specified bounds, demonstrating how signal
limiting works in practice. The test includes verification of expected output values.
"""
test component LimiterTest
  "Limiter block that constraints signals between -3 and 3"
  limiter = Limiter(y_max = 3, y_min = -3) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 280, "y1": 20, "x2": 380, "y2": 120, "rot": 0}
      }
    }
  }
  "Integrator block that accumulates the input signal"
  integrator = Integrator() {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 150, "y1": 20, "x2": 250, "y2": 120, "rot": 0}
      }
    }
  }
  "Sine wave generator with large amplitude to drive the system"
  sine = Sine(amplitude = 4 * π, frequency = 1) {
    "Dyad": {
      "placement": {
        "diagram": {"iconName": "default", "x1": 20, "y1": 20, "x2": 120, "y2": 120, "rot": 0}
      }
    }
  }
relations
  "Connect sine output to integrator input"
  connect(sine.y, integrator.u) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
  "Connect integrator output to limiter input"
  connect(integrator.y, limiter.u) {"Dyad": {"edges": [{"S": 1, "M": [], "E": 2}], "renderStyle": "standard"}}
metadata {
  "Dyad": {
    "icons": {"default": "dyad://BlockComponents/Example.svg"},
    "tests": {
      "case1": {
        "stop": 1,
        "atol": {"limiter.y": 0.000001},
        "expect": {"signals": ["limiter.y"], "final": {"limiter.y": 0}}
      }
    }
  }
}
end


Test Cases ​

Test Case case1 ​

julia
plt