1
Tadayoshi Wakita, Minoru Suzuki, Sadao Yanada, Sigeru Sibata: Sequence display apparatus and method. The Tokyo Electric Co, Hitachi Engineering, Hitachi, Antonelli Terry & Wands, April 24, 1984: US04445169 (34 worldwide citation)

A sequence display apparatus including a sequence control circuit, a cathode ray tube control device and a sequence display control device is disclosed in which a keyboard included in the sequence display control device is provided with logical function specifying keys for specifying one of a plural ...


2
Tadahiko Iijima, Takumi Kawai, Yasuhiro Tennichi, Sadao Yanada: Process control system and method thereof. Hitachi, Antonelli Terry & Wands, April 25, 1989: US04825352 (10 worldwide citation)

A process control system has a timer circuit which fixes operational periods by issuing an instruction for starting each of a plurality of time periods in such a manner that the computation of control blocks will occur during periods of fixed duration. A periodic operation selection circuit selects ...


3
Sadao Yanada, Naganobu Honda, Hisanori Miyagaki, Seiitsu Nigawara: Method of controlling operation of thermoelectric power station. Hitachi, Antonelli Terry & Wands, December 10, 1985: US04558227 (6 worldwide citation)

A method of controlling the operation of a thermoelectric power generating plant, in which the operation of the steam generating equipment and the turbine is controlled in accordance with the plant operation parameters obtained from given patterns of start up and operation of the plant. The method c ...


4
Yukiyoshi Tani, Sadao Yanada, Takeshi Iwamiya, Takumi Kawai, Tadahiko Iijima: Servo valve control apparatus. Hitachi, Antonelli Terry Stout & Kraus, June 1, 1993: US05214913 (3 worldwide citation)

A method of and apparatus for controlling a triple-coil servo valve arranged having a tripled control system each of which is composed of components of a coil, a servo amplifier and a controller, the method of and the apparatus for controlling the triple servo valve including means for specifying th ...