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Low frequency torsional vibration reduction control system construction method based on hybrid drive

A hybrid drive and control system technology, applied to hybrid vehicles, control devices, motor vehicles, etc., can solve the problems of driver's driving comfort decline, output torque fluctuation, and system failure

Active Publication Date: 2019-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the hybrid driving mode of a hybrid vehicle, when the motion state of the vehicle needs to be changed, if the target state point is directly sent to the control part of each power source, the system shock will be caused due to the inconsistency of the torque dynamic characteristics of each power source and output torque fluctuations, and even cause the system to fail to work normally, causing greater damage to the components of the drive system, reducing the driver's driving comfort and prone to traffic failures

Method used

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  • Low frequency torsional vibration reduction control system construction method based on hybrid drive
  • Low frequency torsional vibration reduction control system construction method based on hybrid drive
  • Low frequency torsional vibration reduction control system construction method based on hybrid drive

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Embodiment

[0058] The power system of a plug-in hybrid electric vehicle is composed of an engine, a front transmission, two motors (A, B), a planetary coupling mechanism, a final reducer, a battery, a motor controller and other electrical components. The planetary coupling mechanism has a planetary row PG, Clutch and two brakes (Z1, Z2), the engine is connected to the front transmission of the vehicle, the output shaft of the front transmission is connected to the PG planet carrier, the motor A is connected to the PG sun gear and the brake Z1, the PG ring gear is connected to the brake Z2, and is connected to the brake Z2 through the clutch C1. Motor B is connected to the output shaft, and the output shaft transmits power to the drive shaft through the final reducer and differential to drive the vehicle; Moment T p is the coupling result of the output torque of the three power sources. Since the stiffness of the components of the coupling mechanism is much greater than that of the drive ...

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Abstract

The invention discloses a low frequency torsional vibration reduction control system construction method based on hybrid drive. The low frequency torsional vibration reduction control system construction method based on hybrid drive comprises the following steps of 1, constructing a vehicle energy management strategy to determine a target state point of a vehicle; 2, constructing a dynamic coordinated control strategy, and using a motor A and a motor B to assist an engine to perform dynamic adjusting; 3, constructing a model reference self-adaptive control system; and 4, connecting a model reference self-adaptive controller between an energy management module and a dynamic coordinated control module to adjust an actual state of the vehicle to track a target state. According to the low frequency torsional vibration reduction control system construction method based on hybrid drive, after fuel economy and power performance of the engine and the remaining capacity of a power battery are comprehensively considered, the dynamic coordinated strategy is reasonably set so that the actual state of the vehicle can stably track the target state; the vehicle state switching process is fast andstable; the damage of low frequency torsional vibration to a torque transmission system is reduced; the service life of a vehicle part is prolonged; and the comfort and safety of the vehicle are enhanced.

Description

technical field [0001] The invention belongs to the technical field of vehicle drive vibration reduction, and in particular relates to a method for constructing a hybrid drive-based low-frequency torsional vibration reduction control system. Background technique [0002] In the hybrid driving mode of a hybrid vehicle, when the motion state of the vehicle needs to be changed, if the target state point is directly sent to the control part of each power source, the system shock will be caused due to the inconsistency of the torque dynamic characteristics of each power source and output torque fluctuations, and even cause the system to not work normally, causing greater damage to the components of the drive system, reducing the driver's driving comfort and prone to traffic failures. Contents of the invention [0003] The purpose of the present invention is to provide a low-frequency torsional vibration reduction control system construction method based on hybrid drive, so that...

Claims

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Application Information

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IPC IPC(8): B60W20/10B60W30/20B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W30/20B60W2030/206B60W2510/244B60W2540/10B60W2540/12B60W2710/0616B60W2710/083Y02T10/62
Inventor 刘辉韩立金马越董玉刚
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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