CN109780181B - Gear shifting control method and device based on double-input-shaft transmission, storage medium and continuous speed changing system - Google Patents
Gear shifting control method and device based on double-input-shaft transmission, storage medium and continuous speed changing system Download PDFInfo
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- CN109780181B CN109780181B CN201711126055.7A CN201711126055A CN109780181B CN 109780181 B CN109780181 B CN 109780181B CN 201711126055 A CN201711126055 A CN 201711126055A CN 109780181 B CN109780181 B CN 109780181B
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Abstract
The embodiment of the invention discloses a gear shifting control method and device based on a double-input-shaft transmission, a storage medium and a continuous speed changing system, wherein the method comprises the following steps: receiving a shift request requesting to shift an output speed of a dual input shaft transmission from a current first gear to a second gear; controlling a first power mechanism to keep the current power output; controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear, and adjusting the power output of the second power mechanism to enable the two-shaft gear shifting actuator to be engaged with the second-gear two-shaft driving gear at a rotating speed of which the output speed is controlled to be a second gear; controlling a second power mechanism to keep the current power output; and controlling a first-shaft gear shifting actuator to be disengaged from the first-gear first-shaft driving gear, and enabling the first-shaft gear shifting actuator to be engaged with the second-gear first-shaft driving gear at a rotating speed of controlling the output speed to be the second gear by adjusting the power output of the first power mechanism. By adopting the embodiment of the invention, continuous unpowered interrupted gear shifting can be realized, and the gear shifting impact is relieved.
Description
Technical Field
The invention relates to the technical field of vehicle power control, in particular to a gear shifting control method based on a double-input-shaft transmission.
Background
With the development of electric vehicles, most enterprises put pure electric vehicles on the market, and under the condition that only one power source (engine or motor) is arranged in the vehicle, due to the limitation of a single-shaft power structure, power interruption can occur in the gear shifting process of a transmission, which inevitably causes large gear shifting impact, jerky feeling and poor gear shifting quality.
The prior art provides an electric vehicle or a hybrid vehicle with one power source, which comprises the following three gear shifting methods, wherein one of the three gear shifting methods is that the vehicle is provided with an AMT synchronizer gear shifting device, the power is interrupted and the gear shifting is caused in the gear shifting process of the vehicle, the gear shifting impact is large, and the control is difficult; secondly, the vehicle is provided with a clutch gear shifting device like an AT, so that the structure is complex, and the gear shifting process is complex to control; thirdly, the vehicle is provided with the DCT double-clutch type gear shifting device, and the control is also complex.
With the development of electric and hybrid vehicle technologies, two power sources, i.e., a combination between an engine and a motor, may exist in a vehicle, which makes it possible to achieve continuous power-off-free gear shifting, reduce gear shifting shock, and improve gear shifting quality.
However, the existing shift control technology of the electric vehicle or the hybrid synchronizer has the following problems: in the prior invention, a transmission mostly depends on power interruption for gear shifting, the rotating speeds before and after a power cut-off/connecting part are easy to generate larger rotating speed difference in the gear shifting process, and larger impact is generated when the power connecting part is combined, so that the problems of poor gear shifting quality such as gear shifting impact, automobile cocking and the like are caused, and the control is not easy.
Disclosure of Invention
The gear shifting control method and device based on the double-input-shaft transmission, the storage medium and the continuous speed changing system provided by the embodiment of the invention can realize continuous unpowered-interrupt gear shifting and slow down gear shifting impact.
In a first aspect, an embodiment of the present invention provides a gear shift control method based on a dual-input-shaft transmission, which is executed by a transmission controller of a continuous transmission system, wherein the continuous transmission system further includes a dual-input-shaft transmission, a first power mechanism and a second power mechanism, and the dual-input-shaft transmission includes a first input shaft and a second input shaft; the first input shaft and the second input shaft are provided with at least two gears; each gear corresponds to one driving gear; the first input shaft is connected with the first power mechanism, the second input shaft is connected with the second power mechanism, and the first input shaft comprises a shaft gear shift actuator which is used for being meshed with a shaft driving gear corresponding to any gear; the second input shaft comprises a two-shaft gear shifting actuator which is used for meshing a two-shaft driving gear corresponding to any gear; the transmission controller is respectively connected with the first power mechanism, the second power mechanism, the first shaft gear shifting actuator and the second shaft gear shifting actuator;
the shift control method specifically includes:
receiving a shift request requesting to shift an output speed of the dual input shaft transmission from a current first gear to a second gear;
controlling the first power mechanism to keep the current power output;
controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear, and controlling the output speed to be the rotating speed of the second gear to be engaged with the second-gear two-shaft driving gear by adjusting the power output of the second power mechanism;
controlling the second power mechanism to keep the current power output;
and controlling the first shaft gear shifting actuator to be disengaged from the first-gear shaft driving gear, and adjusting the power output of the first power mechanism to enable the first shaft gear shifting actuator to be engaged with the second-gear shaft driving gear at the rotating speed of which the output speed is the second gear.
Preferably, the controlling the two-shaft shift actuator to disengage from the first-gear two-shaft driving gear and to engage the two-shaft shift actuator with the second-gear two-shaft driving gear at the speed at which the output speed is controlled to be the second gear by adjusting the power output of the second power mechanism specifically includes:
controlling the two-shaft gear shifting actuator to disengage from the first-gear two-shaft driving gear;
calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first-shaft first gear and the transmission ratio of the second-shaft second gear; the rotating speed of the second-gear second-shaft driving gear is used for controlling the output speed to be the second-gear speed;
controlling the second power mechanism to output power to the two-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear two-shaft driving gear, so that the rotating speed of the two-shaft gear shifting actuator is close to the rotating speed of the second-gear two-shaft driving gear;
and controlling the two-shaft gear shifting actuator to be meshed with a second-gear two-shaft driving gear.
Preferably, the controlling the first shaft shift actuator to disengage from the first-gear shaft driving gear and to engage the first shaft shift actuator with the second-gear shaft driving gear at the speed at which the output speed is controlled to be the second gear by adjusting the power output of the first power mechanism specifically includes:
controlling the first-gear shift actuator to disengage from the first-gear first-shaft driving gear;
calculating the rotating speed and the torque of a first shaft driving gear of a second gear according to the transmission ratio of the second shaft to the second gear and the transmission ratio of the first shaft to the second gear; the rotating speed of the second-gear shaft driving gear is used for controlling the output speed to be the second-gear speed;
controlling the first power mechanism to output power to the first shaft gear shifting actuator according to the rotating speed and the torque of the second-gear shaft driving gear, so that the rotating speed of the first shaft gear shifting actuator is close to the rotating speed of the second-gear shaft driving gear;
and controlling the first-gear shifting actuator to be meshed with the second-gear first-shaft driving gear.
In a second aspect, an embodiment of the present invention further provides a shift control device based on a dual-input-shaft transmission, which is disposed in a transmission controller of a continuous transmission system, wherein the continuous transmission system further includes a dual-input-shaft transmission, a first power mechanism and a second power mechanism, and the dual-input-shaft transmission includes a first input shaft and a second input shaft; the first input shaft and the second input shaft are provided with at least two gears; each gear corresponds to one driving gear; the first input shaft is connected with the first power mechanism, the second input shaft is connected with the second power mechanism, and the first input shaft comprises a shaft gear shift actuator which is used for being meshed with a shaft driving gear corresponding to any gear; the second input shaft comprises a two-shaft gear shifting actuator which is used for meshing a two-shaft driving gear corresponding to any gear; the transmission controller is respectively connected with the first power mechanism, the second power mechanism, the first shaft gear shifting actuator and the second shaft gear shifting actuator;
the control device specifically includes:
the device comprises a request receiving module, a first transmission module and a second transmission module, wherein the request receiving module is used for receiving a gear shifting request for shifting the output speed of the dual-input shaft transmission from a current first gear to a current second gear;
the first power mechanism control module is used for controlling the first power mechanism to keep the current power output;
the two-shaft gear shifting control module is used for controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear and enabling the two-shaft gear shifting actuator to be engaged with the second-gear two-shaft driving gear at a rotating speed of controlling the output speed to be the second gear by adjusting the power output of the second power mechanism;
the second power mechanism control module is used for controlling the second power mechanism to keep the current power output;
and the first shaft gear shifting control module is used for controlling the first shaft gear shifting actuator to be disengaged from the first-gear shaft driving gear and enabling the first shaft gear shifting actuator to be engaged with the second-gear shaft driving gear by adjusting the power output of the first power mechanism so as to control the output speed to be the second gear.
Further, the two-shaft shift control module includes:
the second-shaft meshing and disengaging unit is used for controlling the second-shaft gear shifting actuator to disengage from the first-gear second-shaft driving gear;
the second-gear second-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first shaft first gear and the transmission ratio of the second shaft second gear; the rotating speed of the second-gear second-shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear second-shaft power output unit is used for controlling the second power mechanism to output power to the second-shaft gear shift actuator according to the rotating speed and the torque of the second-gear second-shaft driving gear, so that the rotating speed of the second-shaft gear shift actuator is close to the rotating speed of the second-gear second-shaft driving gear;
and the two-shaft meshing and combining unit is used for controlling the two-shaft gear shifting actuator to be meshed with the second-gear two-shaft driving gear.
Further, the shaft shift control module includes:
a shaft engaging and disengaging unit for controlling the shaft shifting actuator to disengage from the first gear shaft driving gear;
the second-gear first-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear first-shaft driving gear according to the transmission ratio of a second shaft and a second gear and the transmission ratio of a first shaft and the second gear; the rotating speed of the second-gear shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear first-shaft power output unit is used for controlling the first power mechanism to output power to the first-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear first-shaft driving gear, so that the rotating speed of the first-shaft gear shifting actuator approaches to the rotating speed of the second-gear first-shaft driving gear;
and the shaft meshing and combining unit is used for controlling the shaft shifting actuator to be meshed with the second-gear shaft driving gear.
In a third aspect, the embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, where the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform any one of the above-mentioned gear shifting control methods for a dual-input shaft transmission.
In a fourth aspect, an embodiment of the present invention further provides a continuously variable transmission system, including: the device comprises a transmission controller, a double-input-shaft transmission, a first power mechanism and a second power mechanism; the transmission controller comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements any one of the above-mentioned gear shifting control methods based on the dual-input shaft transmission.
The embodiment of the invention has the following beneficial effects:
the invention provides a gear shifting control method and device based on a double-input shaft transmission, a storage medium and a continuous speed change system, which are characterized in that when a structure arranged by a connecting speed change device receives a request for shifting from a current first gear to a second gear, a first power mechanism for controlling to provide power for a first input shaft is firstly used for maintaining the current power output so that the first input shaft is still in the first gear, then a second power mechanism for providing power for a second input shaft is controlled for adjusting the power output, a second shaft gear shifting actuator connected with the second input shaft is controlled for performing gear shifting work so that the second input shaft is shifted from the first gear to the second gear, then the second input shaft is controlled for maintaining the current power output, for example, the process of shifting the second input shaft from the first gear to the second gear is used for controlling the first input shaft to shift from the first gear to the second gear, therefore, the first input shaft and the second input shaft are staggered in gears and smoothly shifted.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first embodiment of a continuously variable transmission system provided in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the continuously variable transmission system provided in accordance with the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the continuously variable transmission system provided by the present invention;
FIG. 4 is a schematic flow chart diagram illustrating an embodiment of a dual input shaft transmission-based shift control method provided by the present invention;
FIG. 5 is a schematic structural diagram of an embodiment of a dual input shaft transmission-based shift control device provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural view of a first embodiment of a continuous transmission system provided with two gears including an a gear and a B gear according to the present invention; the first gear can be any gear, and the second gear is any gear except the first gear; then, as in the structure shown in fig. 1, the main components of the continuously variable transmission system are: the dual-input-shaft transmission comprises a transmission controller 6, a dual-input-shaft transmission, a first power mechanism (2, 3) and a second power mechanism (7, 8), wherein the dual-input-shaft transmission comprises a first input shaft 1 and a second input shaft 9; the first power mechanism comprises a shaft power source 2 and a first power source controller 3; the second power mechanism comprises a two-axis power source 8 and a second power source controller 7; in the present invention, the first input shaft 1 and the second input shaft 9 are each provided with at least two gears; each gear corresponds to one driving gear; as shown in fig. 2, the first input shaft is provided with a gear a and a gear B, and the first input shaft 1 is provided with a gear a driving gear 4, a gear B driving gear 15 and a gear shift actuator 14; the second input shaft 9 is provided with a biaxial A-gear driving gear 10, a biaxial B-gear driving gear 12 and a biaxial gear shifting actuator 11; and the dual-input shaft transmission also comprises a three-shaft A-gear driven gear 5 and a three-shaft B-gear driven gear 13. The solid line portion indicates a component of the transmission controller, and the dotted line portion indicates a shift mechanism corresponding to the transmission controller.
The two-shaft gear shifting actuator 11 and the one-shaft gear shifting actuator 14 are two gear shifting actuators, respectively realize the switching of two corresponding gears, and respectively correspond to three states (as shown in table 1); a shaft power source 2 provides power for the first input shaft 1, and a first power source controller 3 controls the running state and power output of the shaft power source 2; the two-shaft power source 8 provides power for the second input shaft 9, and the second power source controller 7 controls the running state and power output of the two-shaft power source 8.
As can be seen from table 1, the first input shaft 1 is connected with the first shaft power source 2 as a whole, and the first shaft shift actuator 14 is connected with the first input shaft 1 as a whole, and can be respectively connected with the first shaft B-gear driving gear 15 (to implement the B-gear), the first shaft a-gear driving gear 4 (to implement the a-gear), or both of them are not connected (to implement the neutral gear), so as to implement different gears; a shaft A gear driving gear 4 and a shaft B gear driving gear 15 are respectively supported on the first input shaft 1 and coaxially rotate; a first-shaft A-gear driving gear 4 is meshed with a third-shaft A-gear driven gear 5, and a first-shaft B-gear driving gear 15 is meshed with a third-shaft B-gear driven gear 13; when one shaft of gear shift actuator 14 is arranged at the middle position, one shaft of A-gear driving gear 4 and one shaft of B-gear driving gear 15 on two sides idle and do not transmit power; when the first shaft shifting actuator 14 is arranged on the left side, the first input shaft 1 and a shaft B gear driving gear 15 are connected into a whole, and the power from the first input shaft 1 is transmitted to the shaft B gear driving gear 15 through the first shaft shifting actuator 14; when the first shaft shifting actuator 14 is arranged on the right side, the first input shaft 1 and the first shaft A gear driving gear 4 are connected into a whole, and the power from the first input shaft 1 is transmitted to the first shaft A gear driving gear 4 through the first shaft shifting actuator 14; the transmission controller 6 is respectively connected with the first shaft gear shifting actuator 11 and the first power source controller 3 through signal lines, and the transmission controller 6 controls the first shaft gear shifting actuator 14 and the first power source controller 3.
The second power source controller 7 is connected with a second input shaft 9, and a two-shaft gear shifting actuator 11 is connected with the second input shaft 9 into a whole and is respectively in three states of being connected with a two-shaft B-gear driving gear 12 (realizing the B gear), being connected with a two-shaft A-gear driving gear 10 (realizing the A gear) or being not connected with the two (realizing the neutral gear), so as to realize different gears; a biaxial A-gear driving gear 10 and a biaxial B-gear driving gear 12 are respectively supported on the second input shaft 9 and coaxially rotate; a two-shaft A-gear driving gear 10 is meshed with a three-shaft A-gear driven gear 5, and a two-shaft B-gear driving gear 12 is meshed with a three-shaft B-gear driven gear 13; when the two-shaft gear shifting actuator 11 is arranged at the middle position, the two-shaft A-gear driving gear 10 and the two-shaft B-gear driving gear 12 on the two sides idle and do not transmit power; when the two-shaft gear shifting actuator 11 is arranged on the left side, the second input shaft 9 and the two-shaft B-gear driving gear 12 are connected into a whole, and the power from the second input shaft 9 is transmitted to the two-shaft B-gear driving gear 12 through the two-shaft gear shifting actuator 11; when the two-shaft gear shift actuator 11 is arranged on the right side, the second input shaft 9 and the two-shaft A-gear driving gear 10 are connected into a whole, and the power from the second input shaft 9 is transmitted to the two-shaft A-gear driving gear 10 through the two-shaft gear shift actuator 11; the transmission controller 6 is respectively connected with the two-shaft gear shifting actuator 11 and the second power source controller 7 through signal lines, and the transmission controller 6 controls the two-shaft gear shifting actuator 11 and the second power input source controller 7.
The three-shaft A-gear driven gear 5 and the three-shaft B-gear driven gear 13 are connected into a whole and couple the torque from the first shaft and the torque of the second shaft; the three-shaft B-gear driven gear 13 is meshed with the two-shaft B-gear driving gear 12 and meshed with the one-shaft B-gear driving gear 15.
TABLE 1 actual 1, actual 2 gear states
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| Actuator1 | A gear | B gear | Neutral position |
| Actuator2 | A gear | B gear | Neutral position |
Referring to FIG. 2, a schematic structural diagram of a second embodiment of the continuously variable transmission system of the present invention is shown; on the basis of the first embodiment, the structures of the wheels 16 and the driving and driven reduction gears 17 are added. The three-shaft B-gear driven gear 13 is meshed with a driving reduction driven gear 17, the driving reduction driven gear 17 is connected to a differential, and the differential is connected with vehicles 16 on two sides to output power.
Referring to FIG. 3, a schematic structural diagram of a second embodiment of the continuously variable transmission system of the present invention is shown; in addition to the second embodiment, a first-shaft second shift actuator 18, a first-shaft C-gear driving gear 19, a third-shaft C-gear driven gear 22, a second-shaft second shift actuator 23 and a second-shaft C-gear driving gear 20 are added. Other elements are not changed and are the same as those of the second embodiment. In the continuously variable transmission system of the present embodiment, three shift positions are provided, including a-position, B-position, and C-position.
Referring to fig. 4, fig. 4 is a schematic flow chart diagram illustrating an embodiment of a dual input shaft transmission-based shift control method according to the present invention. Based on the above three examples of the continuously variable transmission system as an illustration, the present invention provides a shift control method, specifically including steps S10 to S50:
s10; receiving a shift request requesting to shift an output speed of the dual input shaft transmission from a current first gear to a second gear; the dual-input shaft transmission is in a first gear working state; the shift request is a request to shift from a first gear to a second gear; the first gear may refer to any one of the above-mentioned a, B or C gears, and the second gear may refer to a gear other than the first gear.
And S20, controlling the first power mechanism to keep the current power output.
Specifically, since the dual-input-shaft transmission is in the working state of the first gear, the first power mechanism and the second power mechanism both input power to respectively control the rotation speed of the first-gear first-shaft driving gear (taking the first gear as the example of the a gear, the first-gear first-shaft driving gear is the first-shaft a-gear driving gear 4 of the above embodiment) and the first-gear second-shaft driving gear (taking the first gear as the example of the a gear, the first-gear second-shaft driving gear is the second-shaft a-gear driving gear 10 of the above embodiment) to be the first gear.
And S30, controlling the two-shaft gear shift actuator to disengage from the first-gear two-shaft driving gear, and controlling the two-shaft gear shift actuator to engage with the second-gear two-shaft driving gear by adjusting the power output of the second power mechanism so as to control the output speed to be the second gear.
Specifically, the operation procedure of step S30 may be:
controlling the two-shaft gear shifting actuator to disengage from the first-gear two-shaft driving gear;
calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first-shaft first gear and the transmission ratio of the second-shaft second gear; taking the second gear as the B gear for example, the second gear second shaft driving gear is the second shaft B gear driving gear 12 of the above embodiment.
Controlling the second power mechanism to output power to the two-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear two-shaft driving gear, so that the rotating speed of the two-shaft gear shifting actuator is close to the rotating speed of the second-gear two-shaft driving gear;
and controlling the two-shaft gear shifting actuator to be meshed with a second-gear two-shaft driving gear.
In the present embodiment, since the engagement between the first-gear first-shaft shift actuator and the first-gear first-shaft driving gear is maintained and the first power mechanism is controlled to maintain the current first-gear power output in step S10, when the second-shaft shift actuator is controlled to disengage from the first-gear second-shaft driving gear, the power output is still provided to the wheels 16 for normal operation, and the power is not interrupted. And in the process of controlling the second shaft to shift from the first gear to the second gear, calculating the rotating speed of the second-gear second-shaft driving gear to be operated according to the corresponding transmission ratio, controlling the corresponding power output by the second power mechanism to enable the rotating speed of the second-shaft gear shifting actuator to be the calculated rotating speed, further enabling the second-gear shifting actuator to be meshed with the second-gear second-shaft driving gear, and enabling the rotating speed of the second-gear second-shaft driving gear to be the calculated rotating speed to smoothly shift to the rotating speed of the second gear.
And S40, controlling the second power mechanism to keep the current power output.
Specifically, the second power mechanism inputs power to control the vehicle speed of the second-gear second-shaft driving gear (for example, the second gear is the B gear, and the second-gear second-shaft driving gear is the second-shaft B gear driving gear 12) to be the second gear, and maintains the speed. And maintaining the two-shaft gear shift actuator engaged with the second-gear two-shaft driving gear.
And S50, controlling the first shaft gear shift actuator to be disengaged from the first gear shaft driving gear, and controlling the first shaft gear shift actuator to be engaged with the second gear shaft driving gear at the rotating speed of which the output speed is the second gear by adjusting the power output of the first power mechanism.
Specifically, the operation process of step S50 is specifically:
controlling the first-gear shift actuator to disengage from the first-gear first-shaft driving gear;
calculating the rotating speed and the torque of a first shaft driving gear of a second gear according to the transmission ratio of the second shaft to the second gear and the transmission ratio of the first shaft to the second gear; taking the second gear as the B gear as an example, the second-gear first-shaft driving gear is a first-shaft B-gear driving gear output 15;
controlling the first power mechanism to output power to the first shaft gear shifting actuator according to the rotating speed and the torque of the second-gear shaft driving gear, so that the rotating speed of the first shaft gear shifting actuator is close to the rotating speed of the second-gear shaft driving gear;
and controlling the first-gear shifting actuator to be meshed with the second-gear first-shaft driving gear.
In the present embodiment, since the engagement between the two-shaft shift actuator and the second-gear two-shaft driving gear is maintained and the second power mechanism is controlled to maintain the power output of the current second gear in step S40, when the one-shaft shift actuator is controlled to disengage from the first-gear one-shaft driving gear, the power output is still provided to the wheels 16 for normal operation, and the power is not interrupted. In the process of controlling the first shaft to shift from the first gear to the second gear, the rotating speed of the second-gear shaft driving gear to be operated is calculated according to the corresponding transmission ratio, the corresponding power output by the second power mechanism is controlled to enable the rotating speed of the first-gear shifting actuator to be the calculated rotating speed, then the first-gear shifting actuator is meshed with the second-gear shaft driving gear, and the rotating speed of the second-gear shaft driving gear is the calculated rotating speed and is smoothly shifted to the rotating speed of the second gear.
Based on the shift control method based on the dual-input shaft transmission provided above, the shift logic of the continuous transmission system provided in the above embodiment, taking the continuous transmission system provided in the third embodiment as an example, may include the following embodiments:
firstly, when one shaft is supported to be arranged in the A gear, the two shafts execute the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
secondly, when one shaft is supported to be arranged in the B gear, the two shafts execute the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
thirdly, under the condition that one shaft is arranged in the C gear, the two shafts execute the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
fourthly, under the condition that one shaft is in a neutral position, the two shafts execute the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
and fifthly, under the condition that two shafts are arranged in the A gear, one shaft executes the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
sixthly, under the condition that two shafts are placed in the B gear, one shaft executes the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
seventhly, under the condition that two shafts are placed in the C gear, one shaft executes the following steps: the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B;
eighthly, under the condition that two shafts are in a neutral position, the following steps are executed by one shaft: and the gear state is changed from the gear A to the gear B, from the gear A to the gear C, from the gear B to the gear A, from the gear B to the gear C, from the gear C to the gear A and from the gear C to the gear B.
Taking the continuous system provided by the second embodiment as an example, it may include the following embodiments:
firstly, when one shaft is supported to be arranged in the A gear, the two shafts execute the following steps: the gear state from the gear A to the gear B and from the gear B to the gear A;
secondly, when one shaft is supported to be arranged in the B gear, the two shafts execute the following steps: the gear state from the gear A to the gear B and from the gear B to the gear A;
thirdly, under the condition that one shaft is in a neutral position, the two shafts execute the following steps: the gear state from the gear A to the gear B and from the gear B to the gear A;
fourthly, the method comprises the following steps: in the case of supporting two shafts to be placed in the A gear, one shaft executes the following: the gear state from the gear A to the gear B and from the gear B to the gear A;
and fifthly, under the condition that two shafts are supported to be placed in the B gear, one shaft executes the following steps: the gear state from the gear A to the gear B and from the gear B to the gear A;
and the sixth step: in the case of supporting two shafts in neutral, one shaft performs the following: and B gear to A gear state.
The execution logic of the transmission controller will be described below by taking as an example the shift of two shafts from a gear to B gear with one shaft in a gear:
step A1: the transmission controller 6 controls the primary shaft power source 2 to keep the power output of the first gear through the first power source controller 3, and controls the secondary shaft gear shifting actuator 11 to be disengaged from the secondary shaft A gear driving gear 10;
step A2: the transmission controller 6 calculates the rotation speed (i.e. the rotation speed of the two-shaft B-gear driving gear 12) and the torque after the two-shaft gear shift according to the transmission ratio of the first-shaft a-gear and the transmission ratio of the second-shaft B-gear,
step A3: the power output of the two-shaft power source 8 is controlled by the second power source controller 7, so that the rotating speed of the second power input shaft 9 is close to the rotating speed of the two-shaft B-gear driving gear 12 obtained by calculation,
step A4: the two-shaft gear shifting actuator 11 is meshed with a two-shaft B-gear driving gear 12 to complete smooth gear shifting and adjust power output.
The process of the execution logic of other embodiments is similar to the execution logic described above, and is not described herein again.
In summary, the embodiment of the invention provides a gear shifting control method based on a dual-input shaft transmission, in a structure provided in connection with a transmission, upon receiving a request to shift from a current first gear to a second gear, the current power output is kept by controlling a first power mechanism which provides power for a first input shaft, so that the first input shaft is still in a first gear, then a second power mechanism for providing power for a second input shaft is controlled to adjust power output, a second shaft gear shifting actuator connected with the second input shaft is controlled to shift gears, so that the second input shaft is shifted from a first gear to a second gear to work, and then controlling the second input shaft to keep the current power output, and controlling the first input shaft to shift from the first gear to the second gear in the process of shifting the second input shaft from the first gear to the second gear, so as to realize the staggered and smooth gear shifting of the first input shaft and the second input shaft.
Referring to FIG. 5, FIG. 5 is a schematic block diagram of an embodiment of a dual input shaft transmission-based shift control device according to the present invention; the gear shifting control device provided by the embodiment of the invention is a soft system and is arranged in a transmission controller of a continuous speed change system, wherein the continuous speed change system further comprises a double-input-shaft transmission, a first power mechanism and a second power mechanism, and the double-input-shaft transmission comprises a first input shaft and a second input shaft; the first input shaft and the second input shaft are provided with at least two gears; each gear corresponds to one driving gear; the first input shaft is connected with the first power mechanism, the second input shaft is connected with the second power mechanism, and the first input shaft comprises a shaft gear shift actuator which is used for being meshed with a shaft driving gear corresponding to any gear; the second input shaft comprises a two-shaft gear shifting actuator which is used for meshing a two-shaft driving gear corresponding to any gear; the transmission controller is respectively connected with the first power mechanism, the second power mechanism, the first shaft gear shifting actuator and the second shaft gear shifting actuator;
the control device specifically includes:
a request receiving module 10, configured to receive a shift request for shifting an output speed of the dual-input shaft transmission from a current first gear to a second gear;
the first power mechanism control module 20 is used for controlling the first power mechanism to keep the current power output;
the two-shaft gear shifting control module 30 is used for controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear and enabling the two-shaft gear shifting actuator to be engaged with the second-gear two-shaft driving gear at a rotating speed of controlling the output speed to be the second gear by adjusting the power output of the second power mechanism;
the second power mechanism control module 40 is used for controlling the second power mechanism to keep the current power output;
and the first shaft gear shifting control module 50 is used for controlling the first shaft gear shifting actuator to be disengaged from the first-gear shaft driving gear, and enabling the first shaft gear shifting actuator to be engaged with the second-gear shaft driving gear by adjusting the power output of the first power mechanism so as to control the output speed to be the second gear.
Further, the two-shaft shift control module 30 includes:
the second-shaft meshing and disengaging unit is used for controlling the second-shaft gear shifting actuator to disengage from the first-gear second-shaft driving gear;
the second-gear second-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first shaft first gear and the transmission ratio of the second shaft second gear; the rotating speed of the second-gear second-shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear second-shaft power output unit is used for controlling the second power mechanism to output power to the second-shaft gear shift actuator according to the rotating speed and the torque of the second-gear second-shaft driving gear, so that the rotating speed of the second-shaft gear shift actuator is close to the rotating speed of the second-gear second-shaft driving gear;
and the two-shaft meshing and combining unit is used for controlling the two-shaft gear shifting actuator to be meshed with the second-gear two-shaft driving gear.
Further, the shaft shift control module 40 includes:
a shaft engaging and disengaging unit for controlling the shaft shifting actuator to disengage from the first gear shaft driving gear;
the second-gear first-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear first-shaft driving gear according to the transmission ratio of a second shaft and a second gear and the transmission ratio of a first shaft and the second gear; the rotating speed of the second-gear shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear first-shaft power output unit is used for controlling the first power mechanism to output power to the first-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear first-shaft driving gear, so that the rotating speed of the first-shaft gear shifting actuator approaches to the rotating speed of the second-gear first-shaft driving gear;
and the shaft meshing and combining unit is used for controlling the shaft shifting actuator to be meshed with the second-gear shaft driving gear.
In a third aspect, embodiments of the present invention also provide a computer-readable storage medium including a stored computer program, for example, a shift control program based on a dual-input shaft transmission. Wherein when the computer program runs, the apparatus on which the computer readable storage medium is stored is controlled to execute any one of the above-mentioned gear shifting control methods based on the dual-input shaft transmission.
In a fourth aspect, an embodiment of the present invention further provides a continuous transmission system for implementing a shift control based on a dual-input shaft transmission, including: the device comprises a transmission controller, a double-input-shaft transmission, a first power mechanism and a second power mechanism; the transmission controller includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, such as a dual input shaft transmission-based shift control program. The processor implements the steps of any one of the above-described embodiments of the dual input shaft transmission-based shift control method, such as step S10 shown in fig. 4, when executing the computer program, or implements the functions of each of the above-described embodiments of the apparatus, such as the request receiving module 10 shown in fig. 5, when executing the computer program.
Illustratively, the computer program may be partitioned into one or more modules that are stored in the memory and executed by the processor to implement the invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program in the continuously variable transmission system implementing a dual input shaft transmission-based shift control.
The continuously variable transmission system may include, but is not limited to, a processor, memory, and a display. It will be appreciated by those skilled in the art that the schematic diagram is merely an example of a continuously variable transmission system implementing a dual input shaft transmission based shift control and does not constitute a limitation of a continuously variable transmission system implementing a dual input shaft transmission based shift control and may include more or less components than those shown, or combine certain components, or different components, e.g., a continuously variable transmission system implementing a dual input shaft transmission based shift control may also include an input output device, a network access device, a bus, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor is a control center of the continuously variable transmission system for implementing the shift control of the dual-input shaft transmission, and various interfaces and lines are used to connect the whole parts of the continuously variable transmission system for implementing the shift control of the dual-input shaft transmission.
The memory may be used to store the computer programs and/or modules, and the processor may be configured to implement the various functions of the continuously variable transmission system for shift control of a dual input shaft transmission by operating or executing the computer programs and/or modules stored in the memory and by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, a text conversion function, etc.), and the like; the storage data area may store data (such as audio data, text message data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein the modules implementing the continuously variable transmission system based on shift control of a dual input shaft transmission, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (6)
1. A gear shifting control method based on a double-input-shaft transmission is characterized by being executed by a transmission controller of a continuous speed change system, wherein the continuous speed change system further comprises the double-input-shaft transmission, a first power mechanism and a second power mechanism, and the double-input-shaft transmission comprises a first input shaft and a second input shaft; the first input shaft and the second input shaft are provided with at least two gears; each gear corresponds to one driving gear; the first input shaft is connected with the first power mechanism, the second input shaft is connected with the second power mechanism, and the first input shaft comprises a shaft gear shift actuator which is used for being meshed with a shaft driving gear corresponding to any gear; the second input shaft comprises a two-shaft gear shifting actuator which is used for meshing a two-shaft driving gear corresponding to any gear; the transmission controller is respectively connected with the first power mechanism, the second power mechanism, the first shaft gear shifting actuator and the second shaft gear shifting actuator;
the shift control method specifically includes:
receiving a shift request requesting to shift an output speed of the dual input shaft transmission from a current first gear to a second gear;
controlling the first power mechanism to keep the current power output;
controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear, and controlling the output speed to be the rotating speed of the second gear to be engaged with the second-gear two-shaft driving gear by adjusting the power output of the second power mechanism;
controlling the second power mechanism to keep the current power output;
controlling the first shaft gear shifting actuator to be disengaged from the first-gear first shaft driving gear, and controlling the first shaft gear shifting actuator to be engaged with the second-gear first shaft driving gear at the rotating speed of controlling the output speed to be the second gear by adjusting the power output of the first power mechanism;
the control of the two-shaft gear shift actuator to disengage from the first-gear two-shaft driving gear and the adjustment of the power output of the second power mechanism enables the two-shaft gear shift actuator to engage with the second-gear two-shaft driving gear by controlling the output speed to be the second gear rotating speed, and specifically comprises the following steps:
controlling the two-shaft gear shifting actuator to disengage from the first-gear two-shaft driving gear;
calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first-shaft first gear and the transmission ratio of the second-shaft second gear; the rotating speed of the second-gear second-shaft driving gear is used for controlling the output speed to be the second-gear speed;
controlling the second power mechanism to output power to the two-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear two-shaft driving gear, so that the rotating speed of the two-shaft gear shifting actuator is close to the rotating speed of the second-gear two-shaft driving gear;
and controlling the two-shaft gear shifting actuator to be meshed with a second-gear two-shaft driving gear.
2. The dual input shaft transmission-based shift control method of claim 1, wherein said controlling said one shaft shift actuator to disengage from a first gear shaft drive gear and engage said one shaft shift actuator with a second gear shaft drive gear by adjusting a power output of said first power mechanism to control said output speed to a rotational speed of said second gear, comprises:
controlling the first-gear shift actuator to disengage from the first-gear first-shaft driving gear;
calculating the rotating speed and the torque of a first shaft driving gear of a second gear according to the transmission ratio of the second shaft to the second gear and the transmission ratio of the first shaft to the second gear; the rotating speed of the second-gear shaft driving gear is used for controlling the output speed to be the second-gear speed;
controlling the first power mechanism to output power to the first shaft gear shifting actuator according to the rotating speed and the torque of the second-gear shaft driving gear, so that the rotating speed of the first shaft gear shifting actuator is close to the rotating speed of the second-gear shaft driving gear;
and controlling the first-gear shifting actuator to be meshed with the second-gear first-shaft driving gear.
3. The gear shifting control device based on the double-input-shaft transmission is characterized by being arranged in a transmission controller of a continuous speed change system, wherein the continuous speed change system further comprises the double-input-shaft transmission, a first power mechanism and a second power mechanism, and the double-input-shaft transmission comprises a first input shaft and a second input shaft; the first input shaft and the second input shaft are provided with at least two gears; each gear corresponds to one driving gear; the first input shaft is connected with the first power mechanism, the second input shaft is connected with the second power mechanism, and the first input shaft comprises a shaft gear shift actuator which is used for being meshed with a shaft driving gear corresponding to any gear; the second input shaft comprises a two-shaft gear shifting actuator which is used for meshing a two-shaft driving gear corresponding to any gear; the transmission controller is respectively connected with the first power mechanism, the second power mechanism, the first shaft gear shifting actuator and the second shaft gear shifting actuator;
the control device specifically includes:
the device comprises a request receiving module, a first transmission module and a second transmission module, wherein the request receiving module is used for receiving a gear shifting request for shifting the output speed of the dual-input shaft transmission from a current first gear to a current second gear;
the first power mechanism control module is used for controlling the first power mechanism to keep the current power output;
the two-shaft gear shifting control module is used for controlling the two-shaft gear shifting actuator to be disengaged from the first-gear two-shaft driving gear and enabling the two-shaft gear shifting actuator to be engaged with the second-gear two-shaft driving gear at a rotating speed of controlling the output speed to be the second gear by adjusting the power output of the second power mechanism;
the second power mechanism control module is used for controlling the second power mechanism to keep the current power output;
the first power mechanism is used for controlling the output speed of the first power mechanism to be the first gear, and the first power mechanism is used for controlling the output speed of the first power mechanism to be the second gear;
wherein the two-axis shift control module includes:
the second-shaft meshing and disengaging unit is used for controlling the second-shaft gear shifting actuator to disengage from the first-gear second-shaft driving gear;
the second-gear second-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear second-shaft driving gear according to the transmission ratio of the first shaft first gear and the transmission ratio of the second shaft second gear; the rotating speed of the second-gear second-shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear second-shaft power output unit is used for controlling the second power mechanism to output power to the second-shaft gear shift actuator according to the rotating speed and the torque of the second-gear second-shaft driving gear, so that the rotating speed of the second-shaft gear shift actuator is close to the rotating speed of the second-gear second-shaft driving gear;
and the two-shaft meshing and combining unit is used for controlling the two-shaft gear shifting actuator to be meshed with the second-gear two-shaft driving gear.
4. The dual input shaft transmission-based shift control device of claim 3, wherein said one shaft shift control module comprises:
a shaft engaging and disengaging unit for controlling the shaft shifting actuator to disengage from the first gear shaft driving gear;
the second-gear first-shaft rotating speed calculating unit is used for calculating the rotating speed and the torque of a second-gear first-shaft driving gear according to the transmission ratio of a second shaft and a second gear and the transmission ratio of a first shaft and the second gear; the rotating speed of the second-gear shaft driving gear is used for controlling the output speed to be the second-gear speed;
the second-gear first-shaft power output unit is used for controlling the first power mechanism to output power to the first-shaft gear shifting actuator according to the rotating speed and the torque of the second-gear first-shaft driving gear, so that the rotating speed of the first-shaft gear shifting actuator approaches to the rotating speed of the second-gear first-shaft driving gear;
and the shaft meshing and combining unit is used for controlling the shaft shifting actuator to be meshed with the second-gear shaft driving gear.
5. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the dual-input shaft transmission-based shift control method according to claim 1 or 2.
6. A continuously variable transmission system, comprising: the device comprises a transmission controller, a double-input-shaft transmission, a first power mechanism and a second power mechanism; the transmission controller comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the dual input shaft transmission-based shift control method of claim 1 or2 when executing the computer program.
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| CN201711126055.7A CN109780181B (en) | 2017-11-14 | 2017-11-14 | Gear shifting control method and device based on double-input-shaft transmission, storage medium and continuous speed changing system |
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| CN104976329B (en) * | 2015-07-07 | 2017-10-24 | 安徽纽恩卡自控科技有限公司 | A kind of single electric machine mixed power automatic transmission |
| CN105416049B (en) * | 2015-12-11 | 2016-08-17 | 南京越博动力系统股份有限公司 | A kind of gear-shifting control method of automobile-used twin shaft parallel connection power drive system |
| JP2017178010A (en) * | 2016-03-30 | 2017-10-05 | 本田技研工業株式会社 | Vehicle power transmission device |
| CN107089130B (en) * | 2017-04-24 | 2019-04-30 | 合肥工业大学 | A kind of novel double-motor multi gear hybrid power system |
| CN107023668A (en) * | 2017-04-24 | 2017-08-08 | 北京新能源汽车股份有限公司 | A kind of shift control method, gearbox control and automobile |
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