| 摘要 |
FIELD: fluid power drives. SUBSTANCE: continuously arriving at correction unit input are electric input signal from controlled-variable setting device and feedback signals responding to pressure in working (A and B), delivery (P), and drain (T) channels of electrohydraulic amplifier from pressure sensors. Flow-section area of electrohydraulic amplifier working port desired at the moment is calculated in computing unit basing on mentioned signals, including working fluid leaks and flow-over, fluid compressibility, and channel-wall pliability. Calculated flow-section area value is conveyed to electric control signal shaping unit wherein control signal is shaped; this signal corresponds to experimentally-supported flow-section area of electrohydraulic amplifier working port desired at the moment; after that this signal is transmitted through electronic amplifier to control input of electrohydraulic amplifier. EFFECT: improved steady state and transient characteristics of electrohydraulic servodrive. 1 cl, 1 dwg
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