Vehicle Vibration Damping via Generator Adjusting Voltage Control
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Solution Overview
Problem
Conventional vibration damping control systems for vehicles face challenges in effectively suppressing vibrations using drive torque from generators, particularly due to limitations in battery type compatibility, frequency range, and interference between control components, leading to accelerated device deterioration and adverse effects on in-vehicle equipment.
Innovation Solution
A vehicle motion control apparatus that calculates and sets an adjusting voltage to achieve the required correction torque for vibration suppression, using a capacity retention component and a vibration suppression component with different frequencies to avoid interference, and applies this voltage to the generator to control vehicle vibrations, ensuring compatibility with various battery types and maintaining battery health.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the generator is used for vibration damping control by varying generation amount, then vehicle vibrations can be suppressed, but device complexity increases due to superposition of battery charge control and braking/driving control
Solution Approach 1:
The patent segments the control system into two independent control components: a battery charge control component that manages battery charging/discharging, and a motion control component that handles vibration damping. By separating these functions and controlling them independently through separate control devices, the system achieves vibration suppression without increasing overall device complexity.
2Reliability
If conventional vibration damping control is implemented, then drive torque can suppress vibrations, but it causes accelerated device deterioration and adversely affects in-vehicle equipment operation
Solution Approach 1:
The patent introduces an intermediary control mechanism that mediates between the generator's vibration damping function and the battery's charge/discharge operations. By coordinating these functions through independent control components, the system prevents harmful interactions that would otherwise cause device deterioration or adversely affect in-vehicle equipment.
3Productivity
If the control system uses a single integrated approach for battery and motion control, then component utilization is maximized, but control precision decreases due to interference between different control objectives
Solution Approach 1:
The patent divides the control system into separate control components for battery management and motion control, allowing each component to operate independently with high precision. This segmentation maintains component utilization efficiency while eliminating control interference, as each controller can optimize its specific function without being compromised by conflicting control objectives.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively suppresses vehicle vibrations across a wide frequency range, prevents device deterioration, and ensures reliable operation of in-vehicle equipment by decoupling control components and adapting to battery type and condition.
Implementation Method 1
a generator (20) that is rotatably driven by the engine (10)
Implementation Method 2
a regulator (21) that controls field current passing through an excitation winding of the generator (20), so that generated voltage of the generator (20) turns to externally instructed adjusting voltage command value
Data Source
AI summary
A vibration damping control apparatus for a vehicle is applied to a vehicle that includes: a generator that is driven by an internal combustion engine to generate electric power; a regulator that controls field current passing through an excitation winding of the generator, so that generated voltage of the generator turns to an externally instructed adjusting voltage; and a battery that charges generated voltage of the generator. The vibration damping control apparatus for a vehicle includes an adjusting voltage setting means for setting the adjusting voltage based on a charge supply power request value required for controlling a residual capacity of the battery and a drive torque request value for the generator required for suppressing vibration of the vehicle.