To model and simulate an aircraft 28VDC circuit breaker in Matlab/Simulink with a specific trip curve, you can follow these steps:
Define the circuit topology and parameters of the system: This includes the circuit breaker rating, the load current, and the trip curve specifications.
Create a Simulink model of the circuit: This can be done by using Simulink blocks to represent the components of the circuit, such as resistors, capacitors, and the circuit breaker.
Implement the trip curve: To implement the trip curve, you can use a MATLAB Function block or a Simulink S-Function block to define the mathematical function that describes the trip curve. This function should take the circuit current as an input and output a Boolean signal that represents whether the circuit breaker should trip or not.
Simulate the circuit: You can use Simulink to simulate the circuit and observe the circuit breaker's behavior under different load conditions. By varying the load current and observing the output of the trip curve function, you can verify that the circuit breaker trips when the load current exceeds the trip curve threshold.
Analyze the simulation results: You can use Simulink's built-in analysis tools to analyze the simulation results, such as the voltage and current waveforms, and verify that they are consistent with the expected behavior of the circuit.
Overall, modeling and simulating an aircraft 28VDC circuit breaker with a specific trip curve in Matlab/Simulink involves defining the circuit topology and parameters, creating a Simulink model, implementing the trip curve function, simulating the circuit, and analyzing the simulation results.