Flow rate vs pressure relationship in a hydraulic cylinder

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SUMMARY

The relationship between flow rate and pressure in a hydraulic cylinder is defined by the load connected to the rod, which determines the pressure within the cylinder. Flow rate influences the piston movement rate and operates independently of pressure, provided that the hydraulic system's pipes are adequately sized to prevent flow obstruction. For modeling purposes, using Simulink can facilitate the control of hydraulic systems based on these principles.

PREREQUISITES
  • Understanding of hydraulic systems and their components
  • Familiarity with Simulink for modeling and simulation
  • Knowledge of fluid dynamics principles
  • Basic concepts of pressure and flow rate relationships
NEXT STEPS
  • Explore hydraulic system design principles for optimal flow
  • Learn how to model hydraulic systems using Simulink
  • Investigate the effects of load on pressure in hydraulic cylinders
  • Study fluid dynamics to understand flow rate and pressure interactions
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Engineers, hydraulic system designers, and anyone involved in modeling or controlling hydraulic cylinders will benefit from this discussion.

serbring
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Hi all,

I need to model an hydraulic cylinder with simulink and to control it according to some rules. What I don't understand is to find a relationship between the flow rate and pressure inside it. Any suggestion is appreciated.

Thanks
 
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A hydraulic system is designed so the pipes are large enough to not obstruct the flow. The pressure in the cylinder will be determined by the load connected to the rod.

The flow rate sets the rate of movement of the piston. It is independent of the pressure, except for the external mechanical components connected to the rod.
 

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