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JPS5725003A - Pulse width controller - Google Patents

Pulse width controller

Info

Publication number
JPS5725003A
JPS5725003A JP10103680A JP10103680A JPS5725003A JP S5725003 A JPS5725003 A JP S5725003A JP 10103680 A JP10103680 A JP 10103680A JP 10103680 A JP10103680 A JP 10103680A JP S5725003 A JPS5725003 A JP S5725003A
Authority
JP
Japan
Prior art keywords
signal
pulse width
operator
switch
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10103680A
Other languages
Japanese (ja)
Other versions
JPS6150321B2 (en
Inventor
Toshiharu Hiruma
Kiyoshi Arikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP10103680A priority Critical patent/JPS5725003A/en
Publication of JPS5725003A publication Critical patent/JPS5725003A/en
Publication of JPS6150321B2 publication Critical patent/JPS6150321B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/28—Automatic controllers electric in which the output signal is a pulse-train using pulse-height modulation; using pulse-width modulation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE:To execute a control with high accuracy, by determining the hysteresis width of a comparator by the sum of a control deviation and a signal for setting a minimum pulse width output value, and securing th minimum pulse width even when a control signal is zero. CONSTITUTION:When an output signal E0 is off, to an operator 5 is provided an output signal of an operator 4 through a switch SW1, and to an adder 6 are provided an output Ei of the operator 5, also a control signal Ee through a switch SW2, and a minimum pulse width signal Ep through a switch SW3. Off of the signal E0 is continued until the signal Ei exceeds the sum of the signal Ee and the signal Ep. On the other hand, when the signal Ei exceeds the sum of the signal Ee and the signal Ep, the signal E0 of a comparator 7 becomes on, and to the operator is provided the signal E0 through a feeding-back circuit 9 and the switch SW1. To the adder 6 is provided the signal Ei, but common contacts C of the switches SW2, SW3 are connected to common potential points, respectively, and on of the signal E0 is continued until the signal Ei becomes zero.
JP10103680A 1980-07-23 1980-07-23 Pulse width controller Granted JPS5725003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10103680A JPS5725003A (en) 1980-07-23 1980-07-23 Pulse width controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10103680A JPS5725003A (en) 1980-07-23 1980-07-23 Pulse width controller

Publications (2)

Publication Number Publication Date
JPS5725003A true JPS5725003A (en) 1982-02-09
JPS6150321B2 JPS6150321B2 (en) 1986-11-04

Family

ID=14289931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10103680A Granted JPS5725003A (en) 1980-07-23 1980-07-23 Pulse width controller

Country Status (1)

Country Link
JP (1) JPS5725003A (en)

Also Published As

Publication number Publication date
JPS6150321B2 (en) 1986-11-04

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