초록 ▼

A system and method for remotely measuring and linearizing flow characteristics, specifically velocity characteristics, of an electrohydraulic servo valve and actuator system. A plurality of raw command signals are generated in sequence, and corresponding motion data at the valve and load (including

A system and method for remotely measuring and linearizing flow characteristics, specifically velocity characteristics, of an electrohydraulic servo valve and actuator system. A plurality of raw command signals are generated in sequence, and corresponding motion data at the valve and load (including the actuator) are measured and stored. A linearized characteristic is then generated corresponding to the range of motions measured, and a look-up table is generated which relates raw command signals to command signals necessary to obtain the desired linear motion characteristics.

대표청구항 ▼

In an electrohydraulic servo system which includes a servo valve for variably feeding hydraulic fluid from a source to a load, means coupled to the load for providing signals as a function of motion at the load, means for selectively providing command signals, and servo control means responsive to s

In an electrohydraulic servo system which includes a servo valve for variably feeding hydraulic fluid from a source to a load, means coupled to the load for providing signals as a function of motion at the load, means for selectively providing command signals, and servo control means responsive to said command signals and to said motion signals for controlling fluid flow at said valve as a continuing function of said command signals between flow limits, a method of measuring fluid flow characteristics at said valve comprising the steps of: (a) generating a preselected raw flow command signal and feeding said raw flow command signal to said servo control means, (b) measuring said motion signal indicative of motion at the load and determining velocity of motion at said load obtained responsive to said preselected raw flow command signal, (c) repeating said steps (a) and (b) for a plurality of differing raw flow command signals, and (d) storing velocity at said load determined in said step (b) as a function of corresponding raw flow command signals generated in said step (a).