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Hybrid power system with dual clutch gearbox and control method

A technology of hybrid power system and double clutch, which is applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., and can solve problems such as inability to control the transient response of the transmission system

Active Publication Date: 2016-04-06
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Torsional dampers and active shift control are often used to passively suppress the vibration of the transmission system. The above two methods have the limitation of not being able to control the transient response of the transmission system after shifting.

Method used

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  • Hybrid power system with dual clutch gearbox and control method
  • Hybrid power system with dual clutch gearbox and control method
  • Hybrid power system with dual clutch gearbox and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 Shown, a hybrid system with a dual-clutch gearbox comprising:

[0033] The difference seeker 81 is used to obtain the difference between the vehicle speed and the rotational speed of the gearbox input shaft;

[0034] The PID proportional-integral-differential algorithm controller 82 uses the output of the difference seeker 81 as the input of the PID proportional-integral-differential algorithm controller 82, and obtains the motor torque correction suppression signal through the calculation of the PID proportional-integral-differential algorithm controller, and adjusts the motor 83 torque output;

[0035] The motor 83 adjusts the motor torque according to the inhibition signal;

[0036] Engine 85, adjust the engine 85 torque according to the throttle;

[0037] The summer 84 is used for adding the torque of the motor 83 and the torque of the engine 85 to obtain the output torque.

Embodiment 2

[0039] Such as figure 2 As shown, a hybrid control method with a dual-clutch gearbox includes the following steps:

[0040] S1. Step of seeking difference: used to obtain the difference between the vehicle speed and the rotational speed of the gearbox input shaft;

[0041] S2. PID proportional-integral-differential algorithm control step: use the output of the difference seeker as the input of the PID proportional-integral-differential algorithm controller, calculate the motor torque correction suppression signal through the PID proportional-integral-differential algorithm controller, and adjust the motor torque output;

[0042] S3. Motor torque adjustment step: adjust the motor torque according to the suppression signal;

[0043] S4. Summing step: for adding the motor torque and the engine torque to obtain the output torque.

[0044] Vehicle speed and gearbox input shaft rotational speed are control input signals, and their errors are input as PID proportional-integral-dif...

Embodiment 3

[0046] Such as image 3 As shown, a hybrid power system with dual-clutch gearbox includes: engine 1 and engine control unit ECU5, motor 2 and motor controller MCU6, dual-clutch gearbox 3 and dual-clutch gearbox controller TCU7, vehicle control The VCU8 is connected to the wheel 4, the dual clutch gearbox 3 is connected to the wheel 4, the engine 1 is connected to the engine control unit ECU5, the motor 2 is connected to the motor controller MCU6, the dual clutch gearbox 3 is connected to the dual clutch gearbox controller TCU7, and the engine control unit ECU5 The other end of the motor controller MCU6 and the dual-clutch gearbox controller TCU7 is connected to the vehicle controller VCU8, and a motor 2 is installed between the engine 1 and the dual-clutch gearbox 3 for hybrid drive, and the vehicle controller VCU8 receives the engine The information of control unit ECU5, motor controller MCU6, dual-clutch gearbox controller TCU7, as well as the signals of accelerator and brak...

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Abstract

The invention discloses a double-clutch hybrid control unit, comprising a subtractor, a proportion integration differentiation (PID) controller, an electric motor, an engine and a summer, wherein the subtractor is used for obtaining a difference of a vehicle speed and a gearbox input revolving speed; the PID controller is used for regarding the output of the subtractor as the input of the PID controller, obtaining an electric motor torque correction artificial signal through PID calculation, and adjusting the torque output of the electric motor; the electric motor adjusts the an electric motor torque according to the artificial signal; the engine adjusts an engine torque according to an accelerator; and the summer is used for adding the electric motor torque and the engine torque to obtain an output torque. The invention also discloses a double-clutch hybrid control method and a double-clutch hybrid control system. The double-clutch hybrid control unit, method and system disclosed by the invention can be used for electric vehicles and hybrid vehicles, and have less system vibration response.

Description

technical field [0001] The invention relates to a hybrid power system with a dual-clutch gearbox and a control method, belonging to the technical field of hybrid power vehicles. Background technique [0002] Dual clutches have been widely used in passenger car powertrains to achieve efficient power transfer strategies through high-quality shift control. [0003] Such as the corresponding description of "a dual-clutch motor suspension coaxial parallel hybrid system" in the application number "200920241547.5" and the corresponding description of "a deep hybrid system with a single motor" in the application number "201110354531.7", [0004] Its working principle is to change the clutch that transmits power after selecting a gear through an automatic synchronizer. Due to the absence of a torque converter, the dual clutch maximizes transmission efficiency. Features that improve driving patterns and performance make dual clutches ideal for electric and hybrid vehicles. However,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08B60W10/10
CPCY02T10/62
Inventor 朱波张农张青平詹文章保罗.大卫.维克魏跃远柯南极
Owner BEIJING ELECTRIC VEHICLE
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