Boots – shoes – and leggings
Patent
1986-12-05
1988-09-27
Ruggiero, Joseph
Boots, shoes, and leggings
318632, 318636, 364178, 364183, 364165, 364553, G05B 1302
Patent
active
047746513
ABSTRACT:
A power servo system which includes an actuator coupled to a load and receives an input command signal indicative of desired motion at the load. A sampled-data control system receives and samples input signals indicative of desired and actual motion at the hydraulic actuator and load, and provides control signals to the actuator necessary to obtain desired motion. The sampled-data control system includes digital processing circuitry with series and feedback compensation, coordinated with the hydraulic system transfer function, to form a complete closed-loop control system operating in the sampled-data or Z-transform domain. Different equation constants in the series and feedback compensation circuitry are recalculated periodically. Such constants are recalculated as a function of system behavior, so that system control automatically varies with operating conditions. Sampled data domain orders in the series and feedback compensation circuitry permit static gain and velocity constants to be selected independently of other system variables.
REFERENCES:
patent: 4338659 (1982-07-01), Kurakake
patent: 4396975 (1983-08-01), Kurakake
patent: 4577271 (1986-03-01), Jones et al.
patent: 4581699 (1986-04-01), Delmege et al.
patent: 4651272 (1987-03-01), El-Ibiary et al.
El-Ibiary Yehia M.
Leemhuis Richard S.
Ruggiero Joseph
Vickers Incorporated
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