JPS6483872A - Controlling method for nonpulsating pump - Google Patents

Controlling method for nonpulsating pump

Info

Publication number
JPS6483872A
JPS6483872A JP24072987A JP24072987A JPS6483872A JP S6483872 A JPS6483872 A JP S6483872A JP 24072987 A JP24072987 A JP 24072987A JP 24072987 A JP24072987 A JP 24072987A JP S6483872 A JPS6483872 A JP S6483872A
Authority
JP
Japan
Prior art keywords
pump
pressure
starting
phase difference
speed changeover
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.)
Pending
Application number
JP24072987A
Other languages
Japanese (ja)
Inventor
Tsuneo Kan
Mieko Ishii
Yozo Nakamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP24072987A priority Critical patent/JPS6483872A/en
Publication of JPS6483872A publication Critical patent/JPS6483872A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Pressure (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

PURPOSE:To restrain the extent of pressure pulsation to a little, since a pump has started by controlling a phase difference in driving patterns in each pump plunger in a way of properly handling a pressure detecting signal of composite discharge fluid, and enabling the phase compensation of plunger speed from immediately after the pump starting. CONSTITUTION:A two-throw nonpulsating pump suitable for liquid chromatographing or the like has two plungers 8, 9 to be reciprocated by operation of a pulse motor 1 via a transmission mechanism. In this case, there is provided with a pressure sensor 20 which detects pressure in composite discharge fluid, and the output signal is inputted into a microcomputer 24. A phase difference in driving patterns of these plungers 8, 9 is shifted in adding speed changeover starting time to real time at immediately after pump starting. On the other hand, afterward the phase difference is compensated in adding or subtracting the value multiplying a constant to measuring time ranging from speed changeover starting time to a peak position of pressure pulsation to or from the speed changeover starting time according to an increase or decrease state of pressure.
JP24072987A 1987-09-28 1987-09-28 Controlling method for nonpulsating pump Pending JPS6483872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24072987A JPS6483872A (en) 1987-09-28 1987-09-28 Controlling method for nonpulsating pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24072987A JPS6483872A (en) 1987-09-28 1987-09-28 Controlling method for nonpulsating pump

Publications (1)

Publication Number Publication Date
JPS6483872A true JPS6483872A (en) 1989-03-29

Family

ID=17063836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24072987A Pending JPS6483872A (en) 1987-09-28 1987-09-28 Controlling method for nonpulsating pump

Country Status (1)

Country Link
JP (1) JPS6483872A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006284556A (en) * 2005-03-31 2006-10-19 Agilent Technol Inc Solvent supply accompanied with correction of piston motion
JP2009543978A (en) * 2006-07-18 2009-12-10 プルサール テクノロジーズ Long life pump unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006284556A (en) * 2005-03-31 2006-10-19 Agilent Technol Inc Solvent supply accompanied with correction of piston motion
US8297936B2 (en) 2005-03-31 2012-10-30 Agilent Technologies, Inc. Compensating temperature-induced errors during piston movement
JP2009543978A (en) * 2006-07-18 2009-12-10 プルサール テクノロジーズ Long life pump unit

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