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Double-clutch hybrid control unit, method and system

A hybrid, dual-clutch technology, used in hybrid vehicles, motor vehicles, transportation and packaging, to solve problems such as the inability to control the transient response of the transmission system

Active Publication Date: 2013-03-06
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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  • Double-clutch hybrid control unit, method and system
  • Double-clutch hybrid control unit, method and system
  • Double-clutch hybrid control unit, method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, a dual-clutch hybrid control component includes:

[0024] The difference seeker 81 is used to obtain the difference between the vehicle speed and the rotational speed of the gearbox input shaft;

[0025] The PID controller 82 uses the output of the difference seeker 81 as the input of the PID controller 82, and obtains the motor torque correction imitation signal through the PID calculation, and adjusts the motor 83 torque output;

[0026] The motor 83 adjusts the motor torque according to the simulated signal;

[0027] Engine 85, adjust the engine 85 torque according to the throttle;

[0028] 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

[0030] Such as figure 2 Shown, a dual-clutch hybrid control method, comprising the following steps:

[0031] S1. Step of seeking difference: used to obtain the difference between the vehicle speed and the rotational speed of the gearbox input shaft;

[0032] S2, PID control step: use the output of the difference seeker as the input of the PID controller, obtain the motor torque correction signal through PID calculation, and adjust the motor torque output;

[0033] S3. Motor torque adjustment step: adjust the motor torque according to the simulated signal;

[0034] S4. Summing step: for adding the motor torque and the engine torque to obtain the output torque.

[0035] The vehicle speed and the rotational speed of the input shaft of the gearbox are the control input signals, and the error thereof is input as the PID controller 82, and the torque correction signal of the motor 83 is obtained through PID calculation, and the torque output of the motor 83 is adjusted to control...

Embodiment 3

[0037] Such as image 3 As shown, a dual-clutch hybrid control system includes: engine 1 and the control unit ECU5 with claim 1, motor 2 and controller MCU6, dual-clutch gearbox 3 and controller TCU7, vehicle controller VCU8 It is connected with wheel 4, dual clutch transmission 3 and wheel 4, and motor 2 is installed between engine 1 and dual clutch transmission 3 for hybrid drive. VCU8 receives information from ECU5, MCU6, TCU7, as well as accelerator and brake pedal signals, After processing and calculation, the ECU5, MCU6, and TCU7 are controlled.

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PUM

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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 the technical field of hybrid electric vehicles, in particular to a dual-clutch hybrid control component, method and system. Background technique [0002] Dual clutches have been widely used in passenger car powertrains to achieve efficient power transfer strategies through high-quality shift control. 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, low damping in the system limits the ability to dampen vibrational responses during gear changes. Transient response mainly comes from shift dynamic nonlinearity, engine and clutch torque variation and other nonlinearities. Torsional dampers and active shift control are often used to passivel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W10/08B60W10/10B60W10/06B60W20/10
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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