CN106122423A - The Hydromechanical Stepless Transmission power section of changing control method - Google Patents
The Hydromechanical Stepless Transmission power section of changing control method Download PDFInfo
- Publication number
- CN106122423A CN106122423A CN201610656544.2A CN201610656544A CN106122423A CN 106122423 A CN106122423 A CN 106122423A CN 201610656544 A CN201610656544 A CN 201610656544A CN 106122423 A CN106122423 A CN 106122423A
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- Prior art keywords
- section
- changing
- displacement hydraulic
- clutch
- discharge capacity
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Classifications
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- 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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
-
- 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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
- F16H2047/045—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion the fluid gearing comprising a plurality of pumps or motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The present invention provides a kind of power section of changing control method for Hydromechanical Stepless Transmission, comprises the steps: that the key state parameter of present segment monitored in real time by Hydromechanical Stepless Transmission controller；By the criterion being used for the ideal section of changing opportunity of fixed displacement Hydraulic Elements rotating speed and input speed, under the ideal section of changing opportunity, control target phase clutch combine and form two clutches and combine overlap；Then in clutch combines overlay process, regulation becomes displacement hydraulic element discharge capacity, compensates because Hydraulic Elements exchange function causes target phase fixed displacement Hydraulic Elements rotation speed change；It is finally separating present segment clutch.Adopting in this way, the section of changing process energy achievement unit sub-power transmits, and before and after the section of changing, rotating speed is unchanged, hence it is evident that improve Hydromechanical Stepless Transmission shifting quality.
Description
Technical field
The present invention relates to Hydromechanical Stepless Transmission technical field, particularly relate to a kind of Hydromechanical Stepless Transmission power and change
Section control method.
Technical background
Hydromechanical Stepless Transmission is the type of belt drive being composited by machine driving and hydraulic drive, as it is shown in figure 1, by
Power dividing mechanism D, mechanical transmission mechanism M, hydraulic gear H, power flow concentration mechanism C tetra-part composition.This transmission has
Machine driving high efficiency and the outstanding advantages of stepless speed changing with hydraulic transmission, it is adaptable to High-Powered Vehicle uses.
During the hydraulic machinery section of changing, hydraulic gear laod reversal, hydraulic pressure road power stream is reverse, Hydraulic Elements function
Exchanging, hydraulic circuit high and low pressure side exchanges, and causes fixed displacement Hydraulic Elements rotating speed to suddenly change, causes output speed to fluctuate, cause dynamic
Power is interrupted.Routine changes present segment clutch separation and target phase clutch in phase method has intervals between combining, or
Two clutches have the sliding wear overlap of short time, it is impossible to solve the above-mentioned section of changing problem.
The Hydromechanical Stepless Transmission section of changing exists above-mentioned many technical problems, it is therefore proposed that can eliminate rotating speed sudden change,
The power section of the changing control method improving shifting quality is urgently to be resolved hurrily.
Summary of the invention
The technical problem to be solved in the present invention is to provide the power section of the changing control method of a kind of Hydromechanical Stepless Transmission, dynamic
The power section of changing refers to make during the section of changing target phase clutch to have the combination of short time overlapping with present segment clutch, it is ensured that the power during section of changing
Continuously.The method makes Hydromechanical Stepless Transmission be capable of the power section of changing, and eliminates the fluctuation of speed of the section of changing process, and raising is changed
Duan Pinzhi.
For solving above-mentioned technical problem, the present invention provides a kind of Hydromechanical Stepless Transmission power section of changing control method, should
Method content comprises the steps:
1) current state parameter is obtained: the key state parameter of present segment monitored in real time by hydraulic machinery controller；
2) judge the ideal section of changing opportunity: with target phase clutch speed difference be 0 time for the ideal section of changing opportunity；Owing to bus-bar turns
The definitiveness of speed characteristic, by the criterion being used for the ideal section of changing opportunity of fixed displacement Hydraulic Elements rotating speed and input speed, works as control
The fixed displacement Hydraulic Elements rotating speed of device processed monitoring and the ratio currency of input speed reach to meet the section of changing condition during ideal ratio, enter
Enter the section of changing process；
3) according to the key state parameter of present segment, reasonable prediction target phase becomes the emission targets value of displacement hydraulic element；
Before and after the section of changing, when becoming displacement hydraulic element and being changed into operation status of motor by pump work state, target phase becomes displacement hydraulic unit
Part discharge capacity predictive value becomes displacement hydraulic element discharge capacity less than current, need to reduce change displacement hydraulic element discharge capacity；When becoming displacement hydraulic
When element is changed into pump work state by operation status of motor, target phase becomes displacement hydraulic element discharge capacity predictive value and becomes more than current
Displacement hydraulic element discharge capacity, need to increase change displacement hydraulic element discharge capacity；During the section of changing, target phase clutch first combines, present segment
Clutch separates again, and two clutches existence combine overlay process；After target phase clutch combines, when two clutches combine overlapping
Regulation becomes displacement hydraulic element discharge capacity, and before and after making the section of changing, output speed is continuous；
The section of changing process control: the section of changing process is divided into 3 subprocess；
1. meet the section of changing condition time, target phase clutch combine, now present segment clutch still with；
2. controller becomes the displacement value of displacement hydraulic element according to the key state parameter prediction target phase of present segment；Two
When clutch combines overlapping, regulation becomes the discharge capacity of displacement hydraulic element to predictive value；
3. maintain the discharge capacity becoming displacement hydraulic element constant into predictive value, by present segment clutch separation, this section of changing process
Terminate.
A kind of Hydromechanical Stepless Transmission power section of changing control method that the present invention provides, by fixed displacement Hydraulic Elements rotating speed
With the criterion being used for the ideal section of changing opportunity of input speed, under the ideal section of changing opportunity, control target phase clutch combine and formed
Two clutches combine overlap；In clutch combines overlay process, regulation becomes displacement hydraulic element discharge capacity, compensates because of Hydraulic Elements
Exchange function causes target phase fixed displacement Hydraulic Elements rotation speed change；It is finally separating present segment clutch.
Compared with the traditional section of changing control method, a kind of Hydromechanical Stepless Transmission power section of changing control that the present invention provides
Method eliminates the fluctuation of output speed during the section of changing, and improves Hydromechanical Stepless Transmission shifting quality.
Accompanying drawing explanation
Fig. 1 is Hydromechanical Stepless Transmission schematic diagram；
Fig. 2 is certain equal difference two-part Hydromechanical Stepless Transmission sketch；
Fig. 3 be in the power section of changing control method provided by the present invention by hydraulic pressure section to the control of the hydro-mechanical segment section of changing process
Signal schematic representation；
Fig. 4 be in the power section of changing control method provided by the present invention by hydro-mechanical segment to the control of the hydraulic pressure section section of changing process
Signal schematic representation；
Fig. 5 is the control flow chart of a kind of detailed description of the invention of the power section of changing control method provided by the present invention.
Wherein: D is power dividing mechanism, M is mechanical transmission mechanism, and H is hydraulic gear, and C is power flow concentration mechanism；
Wherein: 1: transmission input shaft, 2: diversion mechanism fixes shaft gear, 3: change displacement hydraulic element power shaft, 4:
Change displacement hydraulic element, 5: fixed displacement Hydraulic Elements output shaft, 6: fixed displacement Hydraulic Elements, 7: fixing shaft gear, 8: transmission fills
Put output shaft, 9: clutch CH, 10:K2Planet row gear ring, 11:K2Planet row planet carrier, 12: clutch CL, 13:K3Planet row is too
Sun wheel.
Specific implementation method
In order to make those skilled in the art be more fully understood that technical scheme, real with concrete below in conjunction with the accompanying drawings
The present invention is described in further detail to execute example.
Certain equal difference two-part Hydromechanical Stepless Transmission will be implemented the power section of changing process control, Fig. 2 institute by the present embodiment
Show it is certain equal difference two-part Hydromechanical Stepless Transmission sketch.This actuating device can be divided into hydraulic pressure section and two kinds of works of hydro-mechanical segment
Condition, wherein hydro-mechanical segment is divided into hydraulic machinery first half section (ε ＞ 0) and liquid according to change the positive and negative of displacement hydraulic element 4 discharge capacity ε again
The press mechanical pressing second half section (ε ＜ 0)；When Hydromechanical Stepless Transmission is operated in hydraulic pressure section, clutch CH9 combine, and become displacement hydraulic unit
Part 4 drives fixed displacement Hydraulic Elements 6, i.e. becomes displacement hydraulic element 4 and is operated in pump work state；Hydromechanical Stepless Transmission works
When hydro-mechanical segment, clutch CL12 combine, and drive at hydraulic machinery first half section fixed displacement Hydraulic Elements 6 and become displacement hydraulic unit
Part 4, i.e. becomes displacement hydraulic element 4 and is operated in operation status of motor.
It show the concrete real of the Hydromechanical Stepless Transmission power section of changing control method provided by the present invention with reference to Fig. 5, Fig. 5
Execute the control flow chart of mode.
In a kind of detailed description of the invention, provided by the present invention for the Hydromechanical Stepless Transmission power section of changing controlling party
Method comprises the steps:
S1: obtain current state parameter；The key state parameter of present segment monitored in real time by hydraulic machinery controller；
S2: judge the ideal section of changing opportunity；With target phase clutch speed difference be 0 time for the ideal section of changing opportunity；Due to bus-bar
The definitiveness of rotary speed property, by the criterion being used for the ideal section of changing opportunity of fixed displacement Hydraulic Elements 6 rotating speed and input speed, when
Fixed displacement Hydraulic Elements 6 rotating speed of monitoring control devices and the ratio currency of input speed reach to meet the section of changing bar during ideal ratio
Part, enters the section of changing process；
The process control of S3: the section of changing；The section of changing process is divided into 3 subprocess；
1. meet the section of changing condition time, target phase clutch combine, now present segment clutch still with；
2. controller becomes the displacement value of displacement hydraulic element 4 according to the key state parameter prediction target phase of present segment；?
When two clutches combine overlapping, regulation becomes the discharge capacity of displacement hydraulic element 4 to predictive value；
3. maintain the discharge capacity becoming displacement hydraulic element 4 constant into predictive value, by present segment clutch separation, this section of changing process
Terminate.
Adopt in this way, certain equal difference two-part Hydromechanical Stepless Transmission device by hydraulic pressure section to the hydro-mechanical segment section of changing
Time,
Step S1 obtains current state parameter observation；
Step S2 judges the section of changing opportunity；With hydro-mechanical segment clutch CLAs the ideal section of changing opportunity when 12 speed differences are 0, root
When combining overlapping according to two clutches, bus-bar rotary speed property calculates clutch 12CLSpeed difference is the fixed displacement Hydraulic Elements 6 turns when 0
Speed and the ratio of actuating device input speed, and in this, as the criterion on the ideal section of changing opportunity, monitoring fixed displacement Hydraulic Elements 6 in real time
With the ratio of input speed, when it reaches ideal ratio, meet the section of changing condition, enter the section of changing process, this time-varying displacement hydraulic
Element 4 discharge capacity is designated as εH-HM；
It show the hydraulic pressure section control signal schematic diagram to the hydro-mechanical segment section of changing process with reference to Fig. 3, Fig. 3.
The section of the changing process control of step S3；The section of changing process is divided into 3 subprocess:
1. hydro-mechanical segment clutch C during the section of changingL12 first combine, now hydraulic pressure section clutch CH9 still keep former combination
State；
2. controller is according to the key state parameter of hydraulic pressure section, with hydraulic pressure section clutch CH9 are separated into target without speed difference closes
Reason prediction hydro-mechanical segment becomes discharge capacity ε of displacement hydraulic element 4HM, when two clutches combine overlapping, regulation becomes displacement hydraulic unit
The discharge capacity of part 4 ε when the section of changing startsH-HMTo predictive value εHM；
3. maintaining the discharge capacity becoming displacement hydraulic element 4 is predictive value εHMConstant, by hydraulic pressure section clutch CH9 separate, and this changes
Section process terminates.
Adopt in this way, certain equal difference two-part Hydromechanical Stepless Transmission device by hydro-mechanical segment to the hydraulic pressure section section of changing
Time,
Step S1 obtains current state parameter observation；
Step S2 judges the section of changing opportunity；With hydraulic pressure section clutch CHAs the ideal section of changing opportunity when 9 speed differences are 0, according to two
When clutch combines overlapping, bus-bar rotary speed property calculates clutch CH9 speed differences are fixed displacement Hydraulic Elements 6 rotating speed when 0 and biography
The ratio of dynamic device input speed, and in this, as the criterion on the ideal section of changing opportunity, monitoring fixed displacement Hydraulic Elements 6 and input in real time
The ratio of rotating speed, when it reaches ideal ratio, meets the section of changing condition, enters the section of changing process, this time-varying displacement hydraulic element 4 row
Amount is designated as εHM-H；
It is the hydro-mechanical segment control signal schematic diagram to the hydraulic pressure section section of changing process with reference to Fig. 4, Fig. 4.
The section of the changing process control of step S3；The section of changing process is divided into 3 subprocess:
1. hydraulic pressure section clutch C during the section of changingH9 first combine, now hydro-mechanical segment clutch CL12 still keep former combination
State；
2. controller is according to the key state parameter of hydro-mechanical segment, with hydro-mechanical segment clutch CL9 separate without speed difference
Discharge capacity ε of displacement hydraulic element 4 is become for target reasonable prediction hydraulic pressure sectionH, when two clutches combine overlapping, regulation becomes discharge capacity liquid
The discharge capacity of pressure element 4 ε when the section of changing startsHM-HTo predictive value εH；
3. maintaining the discharge capacity becoming displacement hydraulic element 4 is predictive value εHConstant, by hydro-mechanical segment clutch CL12 separate,
This section of changing process terminates.
Adopting in this way, the section of changing process energy achievement unit sub-power transmits, and before and after the section of changing, rotating speed is unchanged, hence it is evident that improve
Hydromechanical Stepless Transmission shifting quality.
Two sections of Hydromechanical Stepless Transmission of the differentials such as certain employed in the present embodiment, in the section of changing process closed type hydraulic system
Becoming displacement hydraulic element and fixed displacement Hydraulic Elements exchange function, system high and low pressure side is changed sides, due to the impact of volumetric efficiency, by
Hydraulic pressure section should reduce discharge capacity when the hydro-mechanical segment section of changing, by hydro-mechanical segment to the hydraulic pressure section section of changing time should increase discharge capacity.
Above a kind of Hydromechanical Stepless Transmission power section of changing control method provided by the present invention is carried out detailed Jie
Continue.The present invention is applicable not only to the hydraulic machinery in legend, is equally applicable to the hydraulic machinery double power flow of other versions
Compound stepless transmission.In order to illustrate that employing specific case is set forth principle and the implementation of the present invention, above reality
The explanation executing example is only intended to help to understand method and the core concept thereof of the present invention.It should be pointed out that, all spirit in the present invention
With under principle, any modification, equivalent substitution and improvement etc. that the present invention is carried out, should be included in protection scope of the present invention it
In.
Claims (1)
1. the Hydromechanical Stepless Transmission power section of a changing control method, it is characterised in that: the method content comprises the steps:
1) current state parameter is obtained: the key state parameter of present segment monitored in real time by hydraulic machinery controller；
2) judge the ideal section of changing opportunity: with target phase clutch speed difference be 0 time for the ideal section of changing opportunity；Owing to bus-bar rotating speed is special
The definitiveness of property, by the criterion being used for the ideal section of changing opportunity of fixed displacement Hydraulic Elements rotating speed and input speed, works as controller
The fixed displacement Hydraulic Elements rotating speed of monitoring and the ratio currency of input speed reach to meet the section of changing condition during ideal ratio, and entrance is changed
Section process；
3) according to the key state parameter of present segment, reasonable prediction target phase becomes the emission targets value of displacement hydraulic element；The section of changing
Front and back, when becoming displacement hydraulic element and being changed into operation status of motor by pump work state, target phase becomes displacement hydraulic element rows
Amount predictive value becomes displacement hydraulic element discharge capacity less than current, need to reduce change displacement hydraulic element discharge capacity；When becoming displacement hydraulic element
When being changed into pump work state by operation status of motor, target phase becomes displacement hydraulic element discharge capacity predictive value more than currently becoming discharge capacity
Hydraulic Elements discharge capacity, need to increase change displacement hydraulic element discharge capacity；During the section of changing, target phase clutch first combines, present segment clutch
Device separates again, and two clutches existence combine overlay process；After target phase clutch combines, regulation when two clutches combine overlapping
Becoming displacement hydraulic element discharge capacity, before and after making the section of changing, output speed is continuous；
The section of changing process control: the section of changing process is divided into 3 subprocess；
1. meet the section of changing condition time, target phase clutch combine, now present segment clutch still with；
2. controller becomes the displacement value of displacement hydraulic element according to the key state parameter prediction target phase of present segment；In two clutches
When device combines overlapping, regulation becomes the discharge capacity of displacement hydraulic element to predictive value；
3. maintaining the discharge capacity becoming displacement hydraulic element constant into predictive value, by present segment clutch separation, this section of changing process terminates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656544.2A CN106122423B (en) | 2016-08-12 | 2016-08-12 | Hydromechanical Stepless Transmission power changes a section control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656544.2A CN106122423B (en) | 2016-08-12 | 2016-08-12 | Hydromechanical Stepless Transmission power changes a section control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122423A true CN106122423A (en) | 2016-11-16 |
| CN106122423B CN106122423B (en) | 2018-06-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775389A (en) * | 2018-07-23 | 2018-11-09 | 燕山大学 | Hydromechanical Stepless Transmission target phase pressure state prediction technique |
| CN109372981A (en) * | 2018-12-17 | 2019-02-22 | 潍柴动力股份有限公司 | A kind of vehicle shift control system, driving shift control method and loading machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041273A1 (en) * | 1980-06-04 | 1981-12-09 | Hitachi Construction Machinery Co., Ltd. | Circuit pressure control system for hydrostatic power transmission |
| CN1187867A (en) * | 1995-05-23 | 1998-07-15 | 株式会社小松制作所 | Capacity control device for hydraulic motor for hydraulically driven vehicle |
| JP2002523013A (en) * | 1997-04-25 | 2002-07-23 | ジェネラル・ダイナミクス・ランド・システムズ・インク | Multi-range hydraulic mechanical transmission |
| CN101317028A (en) * | 2005-11-30 | 2008-12-03 | 卡特彼勒公司 | System for controlling a power output |
| CN102224361A (en) * | 2008-11-26 | 2011-10-19 | 罗伯特·博世有限公司 | Power split transmission and method for controlling the same |
| JP4878137B2 (en) * | 2005-09-16 | 2012-02-15 | ヤンマー株式会社 | Hydraulic-mechanical transmission |
| CN103635715A (en) * | 2011-06-21 | 2014-03-12 | 沃尔沃建筑设备公司 | A method for controlling a power split continuously variable transmission and a power split continuously variable transmission |
-
2016
- 2016-08-12 CN CN201610656544.2A patent/CN106122423B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0041273A1 (en) * | 1980-06-04 | 1981-12-09 | Hitachi Construction Machinery Co., Ltd. | Circuit pressure control system for hydrostatic power transmission |
| CN1187867A (en) * | 1995-05-23 | 1998-07-15 | 株式会社小松制作所 | Capacity control device for hydraulic motor for hydraulically driven vehicle |
| JP2002523013A (en) * | 1997-04-25 | 2002-07-23 | ジェネラル・ダイナミクス・ランド・システムズ・インク | Multi-range hydraulic mechanical transmission |
| JP4878137B2 (en) * | 2005-09-16 | 2012-02-15 | ヤンマー株式会社 | Hydraulic-mechanical transmission |
| CN101317028A (en) * | 2005-11-30 | 2008-12-03 | 卡特彼勒公司 | System for controlling a power output |
| CN102224361A (en) * | 2008-11-26 | 2011-10-19 | 罗伯特·博世有限公司 | Power split transmission and method for controlling the same |
| CN103635715A (en) * | 2011-06-21 | 2014-03-12 | 沃尔沃建筑设备公司 | A method for controlling a power split continuously variable transmission and a power split continuously variable transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775389A (en) * | 2018-07-23 | 2018-11-09 | 燕山大学 | Hydromechanical Stepless Transmission target phase pressure state prediction technique |
| CN109372981A (en) * | 2018-12-17 | 2019-02-22 | 潍柴动力股份有限公司 | A kind of vehicle shift control system, driving shift control method and loading machine |
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| Publication number | Publication date |
|---|---|
| CN106122423B (en) | 2018-06-08 |
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