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An active vibration suppression method for range extender startup based on crankshaft stop position control

A range extender and crankshaft technology, applied in the direction of control devices, etc., can solve problems such as uncomfortable driving feeling and vibration, and achieve the effect of improving accuracy, good control effect and suppressing vibration.

Active Publication Date: 2018-12-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the range extender is started, vibration will occur, resulting in an uncomfortable driving experience

Method used

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  • An active vibration suppression method for range extender startup based on crankshaft stop position control
  • An active vibration suppression method for range extender startup based on crankshaft stop position control
  • An active vibration suppression method for range extender startup based on crankshaft stop position control

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Experimental program
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Effect test

Embodiment

[0038] Such as figure 1 As shown, a range extender startup active vibration suppression method based on crankshaft stop position control, the method is:

[0039] (1) Establish the crankshaft start target initial angle that makes the range extender suspension system minimum excitation to the vehicle body;

[0040] (2) Design the crankshaft motion target curve with the crankshaft starting target initial angle as the end point;

[0041] (3) During the shutdown process of the range extender, the crankshaft is controlled to move to the end point according to the crankshaft movement target curve, so that the next time the range extender is started, the crankshaft is at the crankshaft start target initial angle in step (1), and the range extender suspension system has a positive impact on the vehicle body The excitation is the smallest, and the vibration of the range extender is suppressed at startup.

[0042] Step (1) is specifically:

[0043] (101) Run the range extender at diff...

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Abstract

The invention relates to a range extender starting active vibration suppression method based on crankshaft stop position control. The method includes the following steps: (1) determining an crankshaft-starting target initial angle, wherein at this initial angle, the excitation of a range extender suspension system on a vehicle body is minimum; (2) designing a crankshaft movement target curve using the crankshaft-starting target initial angle as an end point; (3) during the stopping process of the range extender, controlling a crankshaft to move to the end point in accordance with the crankshaft movement target curve, so that when the range extender is started next time, the crankshaft is located at the crankshaft-starting target initial angle in step (1), the excitation of the range extender suspension system on the vehicle body is minimum, and the vibration at the time of the starting of the range extender is thus inhibited. Compared with the prior art, the range extender starting active vibration suppression method has the advantages of high control precision, good vibration suppression effect, convenient implementation and the like.

Description

technical field [0001] The invention relates to a method for suppressing vibration at startup of a range extender, in particular to an active vibration suppression method at startup of a range extender based on crankshaft stop position control. Background technique [0002] Range-extended electric vehicles solve the "range anxiety problem" caused by battery technology bottlenecks by adding engines to pure electric vehicles. But at the same time, the special structure also makes the range-extended electric vehicle face unprecedented NVH (Noise, Vibration and Harshness) challenges. [0003] Compared with traditional vehicles, extended-range electric vehicles will start and stop the range extender more frequently according to different road conditions, thereby reducing fuel consumption and emissions. When the range extender is started, vibration will occur, resulting in an uncomfortable driving experience. Therefore, it is necessary to suppress the starting vibration of the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/20
CPCB60W30/20B60W2030/206B60W2710/06
Inventor 郭荣王梦佳
Owner TONGJI UNIV
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