Suspension Damping Control for Synchronized Vehicle Roll and Pitch
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Solution Overview
Problem
Existing suspension control systems do not effectively synchronize the roll and pitch of a vehicle, which can lead to a disjointed driving experience and reduced safety.
Innovation Solution
A suspension control device that calculates a target pitch angle based on a roll angle signal and adjusts damping force using a steering torque signal to synchronize the roll and pitch of the vehicle, enhancing the driver's sense of unity with the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional suspension control is used, then the suspension system operates independently without coordination, but the roll and pitch of the vehicle cannot be synchronized, leading to reduced driving safety and stability
Solution Approach 1:
The patent combines roll control and pitch control into a unified suspension control system. The control device integrates multiple sensors (roll angle sensor, pitch angle sensor, steering angle sensor) and coordinates the damping forces of multiple shock absorbers simultaneously to achieve synchronized roll and pitch control, thereby improving vehicle stability through merged control functions.
Solution Approach 2:
The patent implements feedback control by continuously monitoring roll angle, pitch angle, and steering angle through dedicated sensors. The control device uses this feedback information to dynamically adjust the damping forces of the shock absorbers, creating a closed-loop control system that maintains vehicle stability by responding to actual vehicle姿态 changes.
2Reliability
If the suspension control system coordinates roll and pitch synchronization, then vehicle stability improves, but the control algorithm and system complexity increase
Solution Approach 1:
The patent segments the suspension control system into independent controllable units - specifically, individual shock absorbers with adjustable damping forces. By dividing the control into discrete segments (front left, front right, rear left, rear right shock absorbers), the system can achieve complex roll and pitch synchronization through coordinated control of simpler individual components, managing algorithmic complexity through modular segmentation.
Solution Approach 2:
The patent employs dynamic control by continuously adjusting the damping forces of shock absorbers in real-time based on current vehicle state (roll angle, pitch angle, steering angle). The control algorithm dynamically modifies suspension characteristics during vehicle operation, allowing the system to adapt to changing driving conditions and maintain optimal stability without requiring overly complex predetermined control strategies.
Data Source
AI summary
The present invention achieves suspension control that allows for synchronization of the roll and the pitch of a vehicle. This suspension control device that controls the damping force of a suspension comprises: a target pitch angle calculation unit that calculates a target pitch angle with reference to a roll angle signal; and a target control amount computation unit that calculates the roll posture target control amount referred to for controlling the damping force of the suspension by referring to a steering torque signal and the target pitch angle.