Trimming a Model of a Dynamic System Using Numerical Optimization

In this video we show how to find a trim point of a dynamic system using numerical optimization techniques.  We generate a cost function that corresponds to a straight and level flight condition and then use Matlab’s ‘fminsearch’ to solve the unconstrained optimization problem to find states and controls that yield steady state straight and level flight.

Topics and timestamps:
0:00 – Introduction
1:32 – Equilibrium points
12:13 – Equations for steady state, straight and level trimmed flight
25:37 – Formulating the cost function
37:01 – Solving using fminsearch
48:25 – Equilibrium vs. trim point
50:45 – Verify trim point using Simulink model
56:05 – Trimming the model using the Simulink Linear Analysis Tool

Lecture notes and code can be downloaded from https://github.com/clum/YouTube/tree/...

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