How to make a Simulink Switch not momentary?

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Shane
Shane 2024-11-20，16:39
回答： Hitesh 2024-11-21，10:04
I'm trying to make switch pictured below operate and stay in position. The block help page says that when the PS connection sees a value above the set Threshold (.5) the switch is closed, otherwise the switch is open. I thought using a constant would force the switch to remain in the closed position. From testing the switch is only momentarily triggered open and then reverts to the closed position. Ultimately the goal is to feed a Boolean where the constant is and have that operate the switch.
I've seen others use an OR gate and a memory loop to accomplish this but that seem unnecessarily complicated. How can I make the switch stay in the closed state?

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Hitesh
Hitesh 2024-11-21，10:04
Hi @Shane
The model you provided was not completing the circuit, which led to the “Switch” block being only momentarily triggered open before reverting to the closed position. Essentially, the model was showing a scenario where one terminal was connected, but the other was not. To allow the “Switch” block to function as intended, you need to add some resistance or load to the circuit. I have revised the model and attached it for your reference.
For more information regarding the "Switch" block, kindly refer to the following MATLAB documentation:
https://www.mathworks.com/help/simscape/ref/switch.html

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