public void TestDifferentID() {
Circuit circuit2 = new Circuit();
Node con20 = new Node(); // GND
Node con21 = new Node();
Node dummyNode = new Node();
Node dummyConnection2 = new Node();
Node con22 = new Node();
Component battery2 = new Component(con20, con21, 0, 12);
Component resistor21 = new Component(con20, con22, 2, 0);
Component dummyComponent = new Component(dummyNode, dummyConnection2, 0, 0);
Component dummyComponent2 = new Component(dummyNode, dummyConnection2, 0, 0);
Component resistor22 = new Component(con21, con22, 2, 0);
Component resistor23 = new Component(con21, con22, 2, 0);
circuit2.AddComponent(battery2);
circuit2.AddComponent(resistor21);
circuit2.AddComponent(resistor22);
circuit2.AddComponent(resistor23);
CircuitCalculator circuitCalculator2 = new CircuitCalculator();
circuitCalculator2.Calculate(circuit2);
Assert.IsTrue(Math.Abs(con20.Volts - 0) < 0.0001);
Assert.IsTrue(Math.Abs(con21.Volts - 12) < 0.0001);
Assert.IsTrue(Math.Abs(con22.Volts - 8) < 0.0001);
Assert.IsTrue(Math.Abs(battery2.Amps - 4) < 0.0001);
Assert.IsTrue(Math.Abs(resistor21.Amps - 4) < 0.0001);
Assert.IsTrue(Math.Abs(resistor22.Amps - 2) < 0.0001);
Assert.IsTrue(Math.Abs(resistor23.Amps - 2) < 0.0001);
}
public void CircuitModifyShouldHaveCorrectNumberOfComponentsAndConnections() {
Circuit circuit = new Circuit();
Node con0 = new Node(); // GND
Node con1 = new Node();
Node con2 = new Node();
Component battery = new Component(con0, con1, 0, 24);
Component resistor1 = new Component(con1, con2, 2, 0);
Component resistor2 = new Component(con2, con0, 4, 0);
circuit.AddComponent(battery);
circuit.AddComponent(resistor1);
circuit.AddComponent(resistor2);
Assert.IsTrue(circuit.ListComponents.Count == 3);
Assert.IsTrue(circuit.ListConnections.Count == 3);
circuit.ModifyComponent(resistor1, con2, con0);
circuit.ModifyComponent(resistor1, con0, con1);
Assert.IsTrue(circuit.ListComponents.Count == 3);
Assert.IsTrue(circuit.ListConnections.Count == 3);
}
public void TestForNoVoltageSourceConnections() {
Circuit circuit = new Circuit();
Node con0 = new Node(); // GND
Node con1 = new Node();
Component resistor1 = new Component(con0, con1, 2, 0);
Component resistor2 = new Component(con1, con0, 2, 0);
Component resistor3 = new Component(con1, con0, 2, 0);
circuit.AddComponent(resistor1);
circuit.AddComponent(resistor2);
circuit.AddComponent(resistor3);
CircuitCalculator circuitCalculator = new CircuitCalculator();
circuitCalculator.Calculate(circuit);
}
public void Calculate(Circuit circuit) {
var components = circuit.ListComponents;
if(components.Count < 2)
throw new ArgumentException("Invalid Number of Components");
var nodes = circuit.ListConnections;
int numberOfVoltageSources = getNumberOfVoltageSources(components);
int matrixDimension = numberOfVoltageSources + nodes.Count - 1;
if(numberOfVoltageSources < 1)
throw new ArgumentException("No Voltage Sources Found");
var A = new Matrix(matrixDimension, matrixDimension);
var z = new Matrix(matrixDimension, 1);
List<Component> voltageSources = GetVoltageSources(components);
Dictionary<int, int> ID_NodeOrder = new Dictionary<int, int>();
Node groundNode = findGroundNode(nodes, components);
if(groundNode.Id != 0) {
int oldGroundId = nodes.BinarySearch(groundNode);
swapNodes(nodes, 0, oldGroundId);
}
/* map nodeID into 0...n ordered */
for(int i = 0; i < nodes.Count; i++) {
ID_NodeOrder.Add(nodes[i].Id, i);
}
int matrixElement = nodes.Count - 1;
A = FillMatrixA(A, components, nodes, ID_NodeOrder, voltageSources);
z = FillMatrixz(z, matrixElement, voltageSources);
A.PrintMatrix();
z.PrintMatrix();
calculateVoltages(components, nodes, A, z, ID_NodeOrder, voltageSources);
calculateCurrent(components);
}
public void TestCorrectCircuirs() {
Circuit circuit1 = new Circuit();
Node con10 = new Node(); // GND
Node con11 = new Node();
Node con12 = new Node();
Node con13 = new Node();
Node con14 = new Node();
Component battery1 = new Component(con10, con11, 0, 24);
Component resistor11 = new Component(con10, con12, 2, 0);
Component resistor12 = new Component(con10, con12, 4, 0);
Component resistor13 = new Component(con11, con13, 3, 0);
Component resistor14 = new Component(con11, con14, 5, 0);
Component resistor15 = new Component(con13, con14, 1, 0);
Component resistor16 = new Component(con12, con13, 2, 0);
circuit1.AddComponent(battery1);
circuit1.AddComponent(resistor11);
circuit1.AddComponent(resistor12);
circuit1.AddComponent(resistor13);
circuit1.AddComponent(resistor14);
circuit1.AddComponent(resistor15);
circuit1.AddComponent(resistor16);
CircuitCalculator circuitCalculator1 = new CircuitCalculator();
circuitCalculator1.Calculate(circuit1);
Assert.IsTrue(Math.Abs(con10.Volts - 0) < 0.0001);
Assert.IsTrue(Math.Abs(con11.Volts - 24) < 0.0001);
Assert.IsTrue(Math.Abs(con12.Volts - 6) < 0.0001);
Assert.IsTrue(Math.Abs(con13.Volts - 15) < 0.0001);
Assert.IsTrue(Math.Abs(con14.Volts - 16.5) < 0.0001);
Assert.IsTrue(Math.Abs(battery1.Amps - 4.5) < 0.0001);
Assert.IsTrue(Math.Abs(resistor11.Amps - 3) < 0.0001);
Assert.IsTrue(Math.Abs(resistor12.Amps - 1.5) < 0.0001);
Assert.IsTrue(Math.Abs(resistor13.Amps - 3) < 0.0001);
Assert.IsTrue(Math.Abs(resistor14.Amps - 1.5) < 0.0001);
Assert.IsTrue(Math.Abs(resistor15.Amps - 1.5) < 0.0001);
Assert.IsTrue(Math.Abs(resistor16.Amps - 4.5) < 0.0001);
Circuit circuit2 = new Circuit();
Node con20 = new Node(); // GND
Node con21 = new Node();
Node con22 = new Node();
Component battery2 = new Component(con20, con21, 0, 12);
Component resistor21 = new Component(con20, con22, 2, 0);
Component resistor22 = new Component(con21, con22, 2, 0);
Component resistor23 = new Component(con21, con22, 2, 0);
circuit2.AddComponent(battery2);
circuit2.AddComponent(resistor21);
circuit2.AddComponent(resistor22);
circuit2.AddComponent(resistor23);
CircuitCalculator circuitCalculator2 = new CircuitCalculator();
circuitCalculator2.Calculate(circuit2);
Assert.IsTrue(Math.Abs(con20.Volts - 0) < 0.0001);
Assert.IsTrue(Math.Abs(con21.Volts - 12) < 0.0001);
Assert.IsTrue(Math.Abs(con22.Volts - 8) < 0.0001);
Assert.IsTrue(Math.Abs(battery2.Amps - 4) < 0.0001);
Assert.IsTrue(Math.Abs(resistor21.Amps - 4) < 0.0001);
Assert.IsTrue(Math.Abs(resistor22.Amps - 2) < 0.0001);
Assert.IsTrue(Math.Abs(resistor23.Amps - 2) < 0.0001);
}
public void TestForNotEnoughComponents() {
Circuit circuit = new Circuit();
CircuitCalculator circuitCalculator = new CircuitCalculator();
circuitCalculator.Calculate(circuit);
}
private void ExecuteCreateNewDiagramCommand(object parameter)
{
Items.Clear();
Circuit = new Circuit();
}