A PROPORTIONAL PIEZOELECTRIC ELECTRO-PNEUMATIC SERVOVALVE DESIGNTAFT CK; HERRICK BM.1981; JOINT AUTOMATIC CONTROL CONFERENCE/1981/CHARLOTTESVILLE VA; USA; S. L.: AMERICAN AUTOMATIC CONTROL COUNCIL; DA. 1981; 6 P.; BIBL. 8 REF.Conference Paper

A PROPORTIONAL PIEZOELECTRIC ELECTRO-FLUIDIC PNEUMATIC VALVE DESIGNTAFT CK; HERRICK BM.1981; J. DYN. SYST., MEAS., CONTROL; ISSN 0022-0434; USA; DA. 1981; VOL. 103; NO 4; PP. 361-365; BIBL. 7 REF.Article

PULSEWIDTH MODULATED DC CONTROL: A PARAMETER VARIATION STUDY WITH CURRENT LOOP ANALYSISTAFT CK; SLATE EV.1979; I.E.E.E. TRANS. INDUSTR. ELECTRON. CONTROL INSTRUMENT.; USA; DA. 1979; VOL. 26; NO 4; PP. 218-226; BIBL. 6 REF.Article

THE STABILITY OF THE THREE WAY VADERLAPPED HYDRAULIC SPOOL CERVOVALVETAFT CK; TWILL JP.1978; FLUIDIES QUART.; USA; DA. 1978; VOL. 10; NO 1; PP. 15-34; BIBL. 10 REF.Article

AN ANALYSIS OF THE THREE-WAY UNDERLAPPED HYDRAULIC SPOOL SERVOVALVETAFT CK; TWILL JP.1978; J. DYNAM. SYST. MEASUR. CONTROL; USA; DA. 1978; VOL. 100; NO 2; PP. 117-123; BIBL. 11 REF.Article

ELECTRO-FLUID FOUR-WAY ON OFF PNEUMATIC VALVETAFT CK; HARNED TJ.1980; J. DYN. SYST., MEAS., CONTROL; ISSN 0022-0434; USA; DA. 1980; VOL. 102; NO 3; PP. 174-179Article

FUNCTION GENERATION AND NONLINEAR ANALOG COMPUTATION WITH NONLINEAR PULSE WIDTH MODULATION.DE JONG JNM; LIMBERT DE; TAFT CK et al.1975; IN: ADV. INSTRUM. IND. ORIENTED CONF. EXHIB. 30. PROC.; MILWAUKEE, WIS; 1975; PITTSBURGH, PA.; INSTRUM. SOC. AM.; DA. 1975; PP. 562.1-562.6; BIBL. 12 REF.Conference Paper

MULTIFUNCTION GENERATION WITH LOGARITHMIC PULSE WIDTH/PULSE HEIGHT MODULATION.DE JONG JNM; LIMBERT DE; TAFT CK et al.1976; I.E.E.E. TRANS. INDUSTR. ELECTRON. CONTROL INSTRUMENT.; U.S.A.; DA. 1976; VOL. 23; NO 4; PP. 384-390; BIBL. 19 REF.Article