JPS5776345A - Method and device for detecting speed change point of automatic transmission - Google Patents

Method and device for detecting speed change point of automatic transmission

Info

Publication number
JPS5776345A
JPS5776345A JP15275280A JP15275280A JPS5776345A JP S5776345 A JPS5776345 A JP S5776345A JP 15275280 A JP15275280 A JP 15275280A JP 15275280 A JP15275280 A JP 15275280A JP S5776345 A JPS5776345 A JP S5776345A
Authority
JP
Japan
Prior art keywords
time
input shaft
rotational frequency
automatic transmission
sampling
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
JP15275280A
Other languages
Japanese (ja)
Other versions
JPS6123491B2 (en
Inventor
Shigeru Miyawaki
Noritaka Sakakibara
Masanori Iwata
Shigeo Noda
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Toyota Jidosha Kogyo KK
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 Toyota Motor Corp, Toyota Jidosha Kogyo KK filed Critical Toyota Motor Corp
Priority to JP15275280A priority Critical patent/JPS5776345A/en
Publication of JPS5776345A publication Critical patent/JPS5776345A/en
Publication of JPS6123491B2 publication Critical patent/JPS6123491B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE: To detect the shifting of a speed stage, by determing the difference between the data on the rotational frequency of an input shaft at the time of sequential sampling and that on the rotational frequency of the input shaft at the preceding time of the sampling.
CONSTITUTION: The data on the rotational frequency of input shaft of an automatic transmission is obtained at a prescribed sampling rate. Th difference ΔNn between the data on the rotational frequency of the input shaft at the time of sequential sampling and that on the rotational frequency of the input shaft at the preceding time of the sampling. It is judged whether or not the positiveness or negativeness of the difference ΔNn remains unchanged for a prescribed time. When the positiveness or negativeness remains unchanged for the time, the sum Nr of the differences ΔNn within the prescribed time is determined. The sum Nr is compared with a set value Nt. When the sum Nt is equal to or more than the set value Nt, the speed stage of the automatic transmission is regarded as shifted.
COPYRIGHT: (C)1982,JPO&Japio
JP15275280A 1980-10-29 1980-10-29 Method and device for detecting speed change point of automatic transmission Granted JPS5776345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15275280A JPS5776345A (en) 1980-10-29 1980-10-29 Method and device for detecting speed change point of automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15275280A JPS5776345A (en) 1980-10-29 1980-10-29 Method and device for detecting speed change point of automatic transmission

Publications (2)

Publication Number Publication Date
JPS5776345A true JPS5776345A (en) 1982-05-13
JPS6123491B2 JPS6123491B2 (en) 1986-06-06

Family

ID=15547385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15275280A Granted JPS5776345A (en) 1980-10-29 1980-10-29 Method and device for detecting speed change point of automatic transmission

Country Status (1)

Country Link
JP (1) JPS5776345A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248961A (en) * 1985-04-27 1986-11-06 Mazda Motor Corp Controller for automatic transmission
JP2010156389A (en) * 2008-12-26 2010-07-15 Fuji Heavy Ind Ltd Controller of automatic transmission

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63223389A (en) * 1987-03-13 1988-09-16 Shibaura Eng Works Co Ltd pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61248961A (en) * 1985-04-27 1986-11-06 Mazda Motor Corp Controller for automatic transmission
JP2010156389A (en) * 2008-12-26 2010-07-15 Fuji Heavy Ind Ltd Controller of automatic transmission

Also Published As

Publication number Publication date
JPS6123491B2 (en) 1986-06-06

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