Vehicle control method and device

By adjusting the generator's compensation torque through the motor controller, the speed pulsation of the hybrid engine is suppressed, solving the noise and vibration problems after eliminating the flywheel and torsional damper, and improving the smoothness of the vehicle's power system and driving comfort.

CN122354475APending Publication Date: 2026-07-10YINWANG INTELLIGENT TECHNOLOGIES CO LTD
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Patent Information

Application Number
CN202411999716.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

After removing the flywheel and torsional damper, the speed pulsation problem of the hybrid engine was not effectively suppressed, resulting in a decline in noise, vibration and acoustic roughness performance, which affected the driving experience and the overall NVH performance of the vehicle.

Method used

The generator and engine speed fluctuations are obtained by the motor controller, and the generator compensation torque is adjusted to meet the preset fluctuation conditions, so as to achieve dual constraints on speed and torque fluctuations. A precise adaptive optimization process is used to optimize the compensation torque to ensure that the engine maintains low speed fluctuations under various operating conditions.

Benefits of technology

It effectively reduces speed fluctuations when the generator and engine are rigidly connected, improves the smoothness of the vehicle's power system, reduces vibration and noise, enhances driving comfort and ride experience, and improves NVH performance.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses a vehicle control method and device, and relates to the field of electric automobiles. According to the method, under the idle speed of an engine, a corresponding relation between an engine crankshaft angle and a generator rotary transformer is determined through a rotating speed signal collected by the generator rotary transformer and in combination with an engine ignition advance angle and a generator rotary transformer angle, and a generator compensation torque phase waveform is generated; the offset phase is calibrated according to the delay, and then the compensation torque of the generator is calculated; furthermore, the engine torque and the generator speed fluctuation serve as targets, the generator compensation torque is optimized in a self-adaptive mode, the final compensation torque of the generator is obtained, then the final compensation torque is loaded through the generator, the speed pulsation caused by the fact that a flywheel and a torsion damper of the engine are canceled can be effectively reduced, and the NVH performance of the whole vehicle is improved.
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