JPS643362A - Control device for speed change of continuously variable transmission - Google Patents
Control device for speed change of continuously variable transmissionInfo
- Publication number
- JPS643362A JPS643362A JP15902687A JP15902687A JPS643362A JP S643362 A JPS643362 A JP S643362A JP 15902687 A JP15902687 A JP 15902687A JP 15902687 A JP15902687 A JP 15902687A JP S643362 A JPS643362 A JP S643362A
- Authority
- JP
- Japan
- Prior art keywords
- pulses
- target
- difference
- present position
- gear ratio
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
- F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
- F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
- F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
Landscapes
- Control Of Transmission Device (AREA)
Abstract
PURPOSE:To prevent the occurrence of hunting by operating the difference between the number of target pulses and the number of present position pulse, omitting the figures below the decimal point from the result, and outputting the operated result to a step motor and a present position pulse number detecting means. CONSTITUTION:Since the position of a step motor 90 is immediately corresponding to change gear ratio, the present position, i.e., the present change gear ratio of the motor 90 is determined by the number of pulses from its original point. On the other hand, a speed control is carried out by determining a target change gear ratio. i.e., the number of target pulses in accordance with a speed change pattern previously set in line with the operation signals of a throttle opening and vehicle speed etc., so as to make the number of present position pulses approach the number of target pulses. That is, the difference between the number of target pulses and the number of present position pulses is obtained and this difference is inputted into the motor 90, to carry out control to be the target change gear ratio. In this case, the figures below the decimal point are omitted from the obtained difference. Hence, when the difference is small, the motor 90 is not operated, effecting a function similar to providing hysteresis in the control of speed change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15902687A JPS643362A (en) | 1987-06-26 | 1987-06-26 | Control device for speed change of continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15902687A JPS643362A (en) | 1987-06-26 | 1987-06-26 | Control device for speed change of continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643362A true JPS643362A (en) | 1989-01-09 |
Family
ID=15684632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15902687A Pending JPS643362A (en) | 1987-06-26 | 1987-06-26 | Control device for speed change of continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643362A (en) |
-
1987
- 1987-06-26 JP JP15902687A patent/JPS643362A/en active Pending
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