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GB2021814A - Speed control system for combine harvesters - Google Patents

Speed control system for combine harvesters

Info

Publication number
GB2021814A
GB2021814A GB7916718A GB7916718A GB2021814A GB 2021814 A GB2021814 A GB 2021814A GB 7916718 A GB7916718 A GB 7916718A GB 7916718 A GB7916718 A GB 7916718A GB 2021814 A GB2021814 A GB 2021814A
Authority
GB
United Kingdom
Prior art keywords
output
harvester
signal
signals
speed
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
GB7916718A
Other versions
GB2021814B (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2021814A publication Critical patent/GB2021814A/en
Application granted granted Critical
Publication of GB2021814B publication Critical patent/GB2021814B/en
Expired 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
    • H02P23/16—Controlling the angular speed of one shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Harvester Elements (AREA)
  • Threshing Machine Elements (AREA)
  • Combines (AREA)
  • Outside Dividers And Delivering Mechanisms For Harvesters (AREA)

Abstract

The speed of a harvester is controlled by electrical signals derived from the functioning of the harvester. A first signal is obtained by sensing the density of some or all of the harvester output and a second signal is obtained from the drive for the harvesting apparatus. The first and second signals are compared to produce a difference signal with which the forward speed of the harvester is controlled so as to reduce the difference signal to a minimum. An indication of whether the actual speed of the harvester is correct or too slow or too fast at any instant, for a given crop loss is provided by three differently coloured lamps. The output from the straw shaker, the output from the sieve due to the air blast, and the output from the main sieve are sensed to provide output signals which are either treated separately or jointly to provide three individual signals or a composite signal relating to output density.
GB7916718A 1978-05-12 1979-05-14 Speed control system for combine harvesters Expired GB2021814B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1910278 1978-05-12

Publications (2)

Publication Number Publication Date
GB2021814A true GB2021814A (en) 1979-12-05
GB2021814B GB2021814B (en) 1982-09-22

Family

ID=10123817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916718A Expired GB2021814B (en) 1978-05-12 1979-05-14 Speed control system for combine harvesters

Country Status (10)

Country Link
BE (1) BE876185A (en)
CA (1) CA1129977A (en)
DE (1) DE2919531A1 (en)
ES (1) ES480518A1 (en)
FR (1) FR2425193A1 (en)
GB (1) GB2021814B (en)
IT (1) IT1124075B (en)
LU (1) LU81247A1 (en)
NL (1) NL7903706A (en)
SE (1) SE7904043L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506059A1 (en) * 1995-02-22 1996-08-29 Deere & Co Method for automatically regulating at least a portion of the crop processing in a harvesting machine
DE19921466A1 (en) 1999-05-08 2000-11-09 Deere & Co Device for regulating the speed of advance of a harvesting machine with fuzzy logic

Also Published As

Publication number Publication date
NL7903706A (en) 1979-11-14
SE7904043L (en) 1979-11-13
GB2021814B (en) 1982-09-22
CA1129977A (en) 1982-08-17
ES480518A1 (en) 1979-12-16
FR2425193A1 (en) 1979-12-07
IT1124075B (en) 1986-05-07
BE876185A (en) 1979-09-03
LU81247A1 (en) 1979-09-10
DE2919531A1 (en) 1980-01-10
IT7912597A0 (en) 1979-05-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee