JPS57174711A - Speed controller - Google Patents

Speed controller

Info

Publication number
JPS57174711A
JPS57174711A JP56059687A JP5968781A JPS57174711A JP S57174711 A JPS57174711 A JP S57174711A JP 56059687 A JP56059687 A JP 56059687A JP 5968781 A JP5968781 A JP 5968781A JP S57174711 A JPS57174711 A JP S57174711A
Authority
JP
Japan
Prior art keywords
ram
speed
distance
set speed
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.)
Pending
Application number
JP56059687A
Other languages
Japanese (ja)
Inventor
Tatsuya Endo
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries 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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP56059687A priority Critical patent/JPS57174711A/en
Publication of JPS57174711A publication Critical patent/JPS57174711A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Presses (AREA)
  • Control Of Velocity Or Acceleration (AREA)

Abstract

PURPOSE:To control the ram speed over a wide range in a quick and accurate way, by calculating the deviation between the ram speed extracted from the distance between the stop position of a target and the present position and the set speed and controlling a variable capacity type hydraulic pump with the arithmetic output corresponding to the above-mentioned deviation. CONSTITUTION:A detector 25 is set to a hydraulic forging press main body 22 to detect the residual stroke, i.e. the distance between the target stop position and the present position of a ram 20. A microcomputer 27 holds the set speed calculating relation showing the relation between the distance and the set speed of the ram 20 at an ROM35. Based on this relation, the set speed corresponding to the distance is calculated to be held at an RAM36. At the same time, the real speed of the ram 20 extracted from the distance is fed back, and an output in accordance with the deviation to the set speed and the set speed is sent out through an arithmetic part 37. Then the output of the part 37 is delivered to a hydraulic servomotor 42 to control the output degree of a variable capacity type pump 41. Thus the speed of the ram 20 is controlled.
JP56059687A 1981-04-22 1981-04-22 Speed controller Pending JPS57174711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56059687A JPS57174711A (en) 1981-04-22 1981-04-22 Speed controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56059687A JPS57174711A (en) 1981-04-22 1981-04-22 Speed controller

Publications (1)

Publication Number Publication Date
JPS57174711A true JPS57174711A (en) 1982-10-27

Family

ID=13120362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56059687A Pending JPS57174711A (en) 1981-04-22 1981-04-22 Speed controller

Country Status (1)

Country Link
JP (1) JPS57174711A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320157A (en) * 1976-08-10 1978-02-24 Toyota Motor Corp Recovery device for waste heat
JPS5465888A (en) * 1977-10-27 1979-05-26 Osterwalder Ag Hydraulic press

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320157A (en) * 1976-08-10 1978-02-24 Toyota Motor Corp Recovery device for waste heat
JPS5465888A (en) * 1977-10-27 1979-05-26 Osterwalder Ag Hydraulic press

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