# Tagged Questions

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2k views

### Roll PID Control for quadcopter

I'm trying to implement with simulink a PD controller for my quadcopter. I use a simplified model, and for the roll case I have $I_x * \phi = L$, where L is the roll torque. So, the transfer ...
462 views

### How does MATLAB Simulink get such accurate ODE solution results?

I have a fixed-step model (0.001s) in Simulink in which a second order ODE is effectively being set up, a free spring-mass-damper system (m=2, c=0.3, k=1, x0=0, x_dot_0=4). I am studying the solvers ...
53 views

### Is it allowed to use the quadratic solution formula for a differential equation

I have some trouble with a challenging fluid mechanics problem. The problem leads me to a non-linear ode 1st order. $0={\dot p_C}^2+\frac{k_1}{k_2 C}\dot p_C+\frac{p_C-p_0}{k_2C^2}$ My Idea was now ...
73 views

### Basic Mathematics (on MATLAB & Simulink)

I need some help for the below equation, is there any function which could help me to solve for b variable in MATLAB & Simulink? Otherwise, which numerical methods would you prefer? \frac{a-b}{...
58 views

### uniqueness of svd decomposition and its role in statistical analysis

let us consider following model according to following link http://www4.ncsu.edu/~ipsen/REU09/chapter4.pdf it says that : The singular values are unique, but the singular vector matrices are ...
1k views

### Simulink model from a nonlinear State Space

I have the nonlinear state space already constructed in MuPAD as shown: u is the input and y is the output. What is the best way for me to take this to Simulink?
639 views

### Reciprocal -block in Simulink?

I have nonlinear-differential -system for water-flow. I need to find the reciprocal -block in Simulink. I could do it with reciprocal-sqrt -block and sum -block but too complicated, there must be some ...
10 views

### MIMO static decoupling matrix

I am trying to implement a static decoupling matrix of a MIMO system in MATLAB Simulink. This static decoupling matrix is of size 2x2 with some complex numbers, and the control scheme used for ...
45 views

### How to define the curvature of a function in simulink

English is not my native language so be tolerent please, you can edit the question as you pleases. I have a model in simulink (matlab) where I have a function (for example $f(x)$ like in the image), ...
43 views

### FIR filter approximation using a continuous time dynamical system

How can you approximate a Finite Impulse Discrete filter (FIR) using a continuous time linear dynamical system? I am seeing this problem using Matlab, where the resulting continuous system (obtained ...