Simscape Pneumatic Chamber with Control Signal for Initial Pressure

Question

PB75 2022-11-27

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https://ww2.mathworks.cn/matlabcentral/answers/1864798-simscape-pneumatic-chamber-with-control-signal-for-initial-pressure

回答： PB75 2022-12-13

Hi,

I am simulating a pneumatic chamber using a single Translational Mechanical Converter. I am happy with behavour of the chamber when connected to the load, and would like to now extend the model and add control of the initial pressure of the chamber. The initial pressure is defined as a workspace variable (in this case 35 bar). Any suggestions of how I can modify the pnuematic network that would permit the initial pressure (at the beginning or end of the stroke) to be varied during the simulation. I have tried a control pressure source, but I only need to change the pressure at the beginning of the stroke and let the pressure evolve (expanding the chamber), not define it through the whole cycle.

I have attached how the pressure changes with the chamber stroke and position, and an image of the TMC model.

Thanks in advance,

Patrick

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Answer 1

PB75 2022-12-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1864798-simscape-pneumatic-chamber-with-control-signal-for-initial-pressure#answer_1127212

Hi All,

Can anyone help on how to modify the pnuematic network to allow the control the initial pressure in the network, rather than using a workspace variable to define it?

Thanks in advance,

Patrick