Title: Automatic control apparatus with saturation element

Abstract: An automatic control apparatus comprises a means for detecting deviation of an actual value from a target value of a controlled quantity for the control operations and a damping feedback means, at least one of which means is provided with an element having a saturation characteristic. Predetermined relations are established between the input value to saturate the output of the detector means and the input value to saturate the output of the damping feedback means to thereby enhance mainly the response of operation for the control in one direction, while for the control operation in the other direction, stability is improved.

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Inventors: Kuwabara, Takao (Hitachi, JA)

Application Number: 514993
Filing Date: 1974-10-15
Publication_date: 1976-08-10
Assignee: Hitachi, Ltd. (JA)
Primary Class(es): 318/635
Other Classes:
US Patent Ref:

2901680	Aug, 1959	Goldman	318/635.
3046465	Jul, 1962	Litynski et al.	318/635.
3201675	Aug, 1965	Curran et al.	318/635.
3419771	Dec, 1968	Bentley et al.	318/635.
3424402	Jan, 1969	Bulloch et al.	318/635.
3510737	May, 1970	Brown et al.	318/635.
3701992	Oct, 1972	Allen	318/635.
3758838	Sep, 1973	Wright	318/635.

Other Refs:
Primary Examiner: Schaefer, Robert K.
Assistant Examiner: Duncanson, Jr., W. E.
Attorney: Craig & Antonelli