Vehicle Motor Vibration Control via Dynamic Gain Table
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Solution Overview
Problem
Existing vibration reduction systems for driving motors in vehicles, such as hybrid and electric vehicles, fail to optimize vibration reduction torque based on torque variation and RPM, leading to degraded performance and potential resonance issues.
Innovation Solution
An apparatus and method that utilize a gain table to determine optimal gain values for vibration reduction torque based on detected torque variation and RPM, incorporating a gain table storage unit, torque variation detector, RPM detector, and controller to generate targeted vibration reduction torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed gain values are used for vibration reduction torque calculation, then the control system is simple, but vibration reduction performance is degraded
Solution Approach 1:
The patent implements dynamic gain adjustment by storing multiple gain values in a gain table and selecting appropriate gains based on real-time torque variation and RPM conditions. This allows the vibration reduction torque to be dynamically adapted to changing motor operating conditions, resolving the contradiction between system simplicity and vibration reduction effectiveness.
Solution Approach 2:
The patent changes the parameter (gain value) based on operating conditions (torque variation and RPM). By storing gain values corresponding to different torque variation ranges and RPM ranges, and selecting the appropriate gain based on current conditions, the system achieves adaptive vibration reduction without excessive complexity.
2Ease of operation
If gains are not adjusted according to torque variation and RPM, then the control calculation is simple, but vibration reduction performance is degraded
Solution Approach 1:
The system dynamically adjusts gain values based on real-time detection of torque variation and RPM. The controller selects appropriate gain values from pre-stored tables based on current operating conditions, enabling adaptive vibration reduction while maintaining relatively simple control logic through table lookup.
Solution Approach 2:
The patent implements parameter changes by storing multiple gain values corresponding to different torque variation ranges and RPM ranges. The controller determines the current torque variation and RPM, selects the appropriate gain value from the gain table based on these parameters, and applies it for vibration reduction torque calculation.
3Device complexity
If fixed gain values are used without considering resonance areas, then the control system is simple, but resonance vibrations may be caused or exacerbated
Solution Approach 1:
The patent stores different gain values in the gain table corresponding to different RPM ranges, including resonance areas. When the motor operates in resonance-prone RPM ranges, the controller selects gain values that are appropriate for those conditions, thereby avoiding the exacerbation of resonance vibrations while maintaining simple table-based control.
Data Source
AI summary
The present disclosure provides an apparatus and a method for controlling a vibration of a driving motor in a vehicle by generating a vibration reduction torque using gains that correspond to a torque variation and an RPM of a driving motor. The method includes storing a gain table in which gain values that correspond to a torque variation and a revolution per minute (RPM) of a driving motor in a vehicle are recorded. The torque variation of the driving motor and the RPM of the driving motor are detected. The gain values are determined using the detected torque variation and RPM of the driving motor based on the gain table and reducing. In addition, a vibration of the driving motor is reduced based on the determined gain values.