THE ANALYSIS OF ACCELERATION REGIMES OF VOLUMETRIC HYDRAULIC ACTUATOR WITH FREQUENCY CONTROL AND ACTUATOR HYDRAULIC DRIVE ENERGY FEEDING FROM VARIOUS SOURCES
The simulation models of unstationary movement of volumetric hydraulic actuator with frequency control (VHA-FC) outlet link with separated and combined hydraulic motor energy feeding from pneumatic-hydraulic accumulator (PhA) and pump connecting with asynchronous electric drive are offered. The acceleration regimes of actuator with different loads are examined, energy performances of the PhA and foundation formulas of necessary working unforced and constructional capacities of PhA which provide VHA-FC outlet link acceleration up to the necessary speed are considered. The research shows that decrease of inertia load and using hydraulic motor with high volume constants result in essential acceleration time reduction. There is no acceleration time reduction of VHA-FC with energy feeding only from PhA. The best actuator acceleration performances exist with using combined energy feeding of actuator hydraulic drive from PhA and pump.