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Engine exciting force identification method and device, computer equipment and storage medium

An identification method and exciting force technology, which is applied in the field of electric power system, can solve the problems of low identification accuracy due to the frequency-varying characteristics of the engine exciting force, and achieve high practical application value, strong adaptability, and eliminate identification errors Effect

Pending Publication Date: 2021-11-26
一汽解放青岛汽车有限公司 +1
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  • Claims
  • Application Information

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Problems solved by technology

Although this method can identify the engine excitation force, in the prior art, the frequency-varying characteristics of the engine excitation force are not taken into account, and there is a problem of low recognition accuracy

Method used

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  • Engine exciting force identification method and device, computer equipment and storage medium
  • Engine exciting force identification method and device, computer equipment and storage medium
  • Engine exciting force identification method and device, computer equipment and storage medium

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Embodiment Construction

[0053] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0054] The engine excitation force identification method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, both the first test device 102 and the second test device 104 communicate with the computer device 106 through the network.

[0055] Specifically, when the engine excitation force is identified, the following steps are included:

[0056] (1) The computer device 106 calculates the elastic point coordinates corresponding to the elastic center point of the corresponding suspension according to the center of m...

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Abstract

The invention relates to an engine excitation force identification method and device, computer equipment and a storage medium. The method comprises the following steps: constructing a conversion matrix corresponding to each suspension elastic center point; obtaining target acceleration data corresponding to each suspension elastic center point, and calculating the inertia force of the power assembly according to the target acceleration data corresponding to each suspension elastic center point, the conversion matrix and a preset mass matrix; according to the obtained in-phase dynamic stiffness data and orthogonal dynamic stiffness data, calculating second stiffness data of each suspension in a crankshaft coordinate system; and according to the target acceleration data, the second rigidity data and the elastic point coordinates, calculating the bearing reaction force of the suspension system, and according to the bearing reaction force of the suspension system and the inertia force of the power assembly, recognizing the excitation force of the engine. By adopting the method, the recognition accuracy of the excitation force of the engine can be improved.

Description

technical field [0001] The present application relates to the technical field of electric power systems, in particular to a method, device, computer equipment and storage medium for identifying an engine excitation force. Background technique [0002] NVH (Noise, Vibration, Harshness, Noise, Vibration and Harshness) is a comprehensive issue to measure the quality of automobile manufacturing, and it gives the most direct and superficial feeling to car users. The engine is the main source of excitation for vehicle NVH. However, the prerequisite for evaluating vehicle NVH performance is the effective identification of engine excitation force. At present, in practical engineering applications, the engine bench test bench is mainly used to detect the vibration acceleration of multiple points on the engine, and based on the measured vibration acceleration data, the engine excitation force is determined according to the excitation force identification formula. identify. Although...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/17
CPCG06F30/15G06F30/17Y02T90/00
Inventor 黄德惠胡金蕊张凯向建东耿志广周强孙吉超
Owner 一汽解放青岛汽车有限公司
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