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Method for controlling a corrective oscillation-reducing function that limits oscillations of an electric machine

A control method and functional technology, which is applied in the control field of the vehicle condition correction function that limits the motor oscillation, and can solve the problems that the vehicle condition correction function cannot weaken the shaft speed oscillation, maintain the oscillation, and oscillate and spread.

Active Publication Date: 2015-11-04
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in some specific operating situations, the vehicle condition correction function is not able to dampen the speed oscillation of the shaft, but instead maintains the oscillation, or even spreads the oscillation
For this type of function, the driver cannot intervene to stop the condition correction method if the correction is not applicable
[0006] Thus transmitting vibrations or jolts of the conveyor to the vehicle, which reduces comfort
Also, vibrations can cause wear and damage to conveying elements, which can lead to failure

Method used

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  • Method for controlling a corrective oscillation-reducing function that limits oscillations of an electric machine
  • Method for controlling a corrective oscillation-reducing function that limits oscillations of an electric machine
  • Method for controlling a corrective oscillation-reducing function that limits oscillations of an electric machine

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Embodiment Construction

[0025] figure 1 The hybrid vehicle includes an internal combustion engine 2 that is connected to a first shaft of a gearbox 4 through a clutch 26, the gearbox includes an automatic control device for the clutch and gear shifting, and the automatic control device drives the vehicle's Front wheel 6. The internal combustion engine 2 includes an electronic starter 8 powered by a low-voltage battery 10 .

[0026] In a variant, the internal combustion engine 2 may drive the front wheels 6 through other types of transmissions, such as an automatic transmission "BVA", a continuously variable transmission "CVT", a manual transmission or a dual clutch transmission.

[0027] The front electric machine 12 is permanently coupled to the internal combustion engine 2 to assist the operation of said internal combustion engine.

[0028] A rear motor 20 powered by the high voltage battery 16 may be coupled to the vehicle rear wheels 22 through a transmission 24 including a differential or clut...

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Abstract

A method for controlling a corrective oscillation-reducing function that limits the speed or torque oscillations on transmission elements linking an electric machine (20) to the wheels (22) of an electric or hybrid vehicle, said function correcting the torque setpoint given to this machine in order to limit these oscillations, from speed or torque measurements on the transmission, characterised in that, during the activation of the smoothness function, it counts the number of significant oscillations exceeding a predefined strength threshold within a time limit, and when said threshold has been exceeded a certain number of times, it deactivates the curative smoothness control function.

Description

technical field [0001] The present invention relates to a control method for controlling a vehicle condition correction function which limits speed or torque oscillations on wheels driven by an electric motor of an electric or hybrid vehicle, and an electric vehicle implementing this method. or hybrid vehicles. Background technique [0002] Hybrid vehicles of the known type comprise an internal combustion engine, which drives the front wheels via a gearbox, and an electric machine, which drives the rear wheels via a transmission, in order to implement, in particular, driving in a hybrid mode, which optimizes the operation of the internal combustion engine, or in an electric mode, which is free of polluting gas emissions. . [0003] In order to limit speed oscillations or torque oscillations on the drive shaft of the motor, which can cause inconvenient jolts, the known control function of the motor described in particular by document FR-A1-2910198 implements a correction of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W30/20B60K6/52
CPCB60W20/00B60K6/52B60L2270/145B60W30/20B60W2050/0052B60W2510/104B60W2510/105Y02T10/6265Y02T10/7258B60W50/06Y02T10/62Y02T10/72
Inventor Y·米约F·苏梅拉G·罗克
Owner PEZHO SITROEN AUTOMOBILS SA