Transfer Function for Peristaltic Pump

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Thread Starter

David Brundle

I'm looking to design a control system to maintain a constant flow rate to a series of sensors. There is a sample reservoir filled by a peristaltic pump. I know very little about persitaltic pumps but I'm looking to characterise it as a simple transfer function for the purposes of preliminary design. I realise that a peristaltic pump produces a pulsed output but figure that using an average flow rate will be a reasonable approximation. Has anyone got any experience of using this approach and any suggestions for the form of a transfer function?
 
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