Dans Simulink, initialiser la valeur d'un Knob en appuyant sur un bouton par exemple.

Mon projet comporte un Knob qui permet de commader une position angulaire.

Je souhaite pouvoir remettre à zéro le knob lors d'un évennement comme l'appui sur un bouton par exemple.

L'ensemble doit fonctionner sous Simulink uniquement.

Answer 1

[UDAYA PEDDIRAJU]

Hi didier,

To implement a knob that controls an angular position and can be reset by pressing a button in Simulink, you can follow these steps:

1. Create the Knob: Use a "Slider Gain" block or a "Knob" block from the Simulink library to represent the knob. This block will output a value corresponding to the angular position.
2. Add a Button: Use a "Switch" block to control the reset functionality. You can create a button using a "Constant" block that changes its value when pressed.
3. Reset Logic: Connect the output of the knob to one input of the "Switch" block. Connect the output of the button (which will be a reset signal) to the other input of the "Switch" block. The output of the "Switch" block will be the angular position.
4. Reset Condition: Set the "Switch" block to output a predefined reset value (e.g., 0 degrees) when the button is pressed. Otherwise, it will output the current position from the knob.

Here’s a simple outline of how the blocks can be connected:

• Slider Gain (Knob) → Switch (Input 1)
• Constant (Button) → Switch (Input 2)
• Switch Output → Scope (or any other block to visualize the angular position)

This setup allows you to control the angular position with the knob and reset it to a specific value when the button is pressed.

Related documentation:

1) Knob: https://www.mathworks.com/help/simulink/slref/knob.html

2) Button: https://www.mathworks.com/help/simulink/slref/pushbutton.html

3) Switch: https://www.mathworks.com/help/simulink/slref/switch.html

Let me know if you face any trouble?