Semenov

The article gives a description of dynamic processes in the electrohydraulic pressure controller with electric pressure feedback. Linear equations of the lumped-parameter mathematical model, allowing for inertia of fluid in the connecting pipeline in lumped parameters, were composed. The authors analyzed the effect of different factors on stability of the system. The conducted research showed that the electrohydraulic pressure regulator might experience sustained oscillations; their existence depends on parameters of hydraulic resistance of the connecting pipeline regulator. Special attention should be paid to the difference of natural frequencies of amplifier and electro hydraulic accumulators.