Hi @John,
You have a specific condition-based logic that needs to update elements of a vector (Vector = [0, 0, 0]) during each iteration of a loop. The conditions dictate that only certain elements of the vector should be updated based on the current iteration index. The goal is to avoid copying the entire vector for every iteration, which can be computationally expensive. Here are the implementation steps listed below.
1. Set Up the Model: - Open Simulink and create a new model. - Add a For Iterator Subsystem from the Simulink library.
2. Initialize the Vector: - Within the For Iterator Subsystem, initialize your vector using a Constant block or an Inport block with values [0, 0, 0]. This will serve as your initial vector state.
3. Add an Assignment Block: - Drag an Assignment block into your For Iterator Subsystem. This block will allow you to update specific elements of the vector based on the iteration index. - Configure this block to accept two inputs: one for the vector and another for the new value to be assigned.
4. Configure Loop Logic: - Use a Switch block or Multiport Switch block to implement your conditional logic: - Connect the output of the For Iterator to control which element of the vector is updated based on the current iteration. - For iteration <= 1, connect it to update Vector(1). - For iteration <= 2,connect it to update Vector(2). - If none of these conditions are met (i.e., for iteration > 2), simply pass through the current value of that element without making any updates.
5. Connect Outputs: - Ensure that after each update, you connect the output of your Assignment block back into itself or use it as an input for subsequent iterations, allowing it to carry forward any changes made during previous iterations.
6. Final Output: - After exiting the For Iterator loop, connect an Outport block to capture the final state of your vector.
Example Configuration
- In your Assignment block, you might set it up as follows: - Inputs: - First input: Current state of `Vector` - Second input: New value based on conditions - Assignments in your logic:
if iteration == 1
Vector(1) = 1;
elseif iteration == 2
Vector(2) = 3;
endBy using this approach, you minimize memory usage since only specific elements are updated rather than copying and reassigning the whole vector.
Hope this helps.
