JPS5776345A - Method and device for detecting speed change point of automatic transmission - Google Patents
Method and device for detecting speed change point of automatic transmissionInfo
- 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
Links
Landscapes
- Control Of Transmission Device (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63223389A (en) * | 1987-03-13 | 1988-09-16 | Shibaura Eng Works Co Ltd | Pump |
-
1980
- 1980-10-29 JP JP15275280A patent/JPS5776345A/en active Granted
Cited By (2)
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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