Half-Vehicle Floating Device with Load Feedback Position Tracking
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Solution Overview
Problem
Existing methods for testing the suspension system of heavy vehicles, particularly half-vehicle loading experiments, face challenges in accurately tracking the position of the unloaded half-vehicle, leading to inaccurate and costly performance tests.
Innovation Solution
A half-vehicle floating device based on load feedback, incorporating a rack, active and position-measuring platforms, guide rails, and an inverter motor with a right-angled reducer, allows for precise position tracking and load feedback using weighing sensors and a parallel four-bar structure to synchronize the position of the active platform relative to the vehicle's chassis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a half-vehicle loading experiment is conducted to test suspension performance, then the test accuracy and economy are improved, but the position tracking of the unloaded half-vehicle becomes difficult to guarantee
Solution Approach 1:
The patent employs weighing sensors to detect the load on the active platform and uses this feedback signal to control the inverter motor, which adjusts the position of the active platform to maintain synchronization with the position-measuring platform. This closed-loop feedback mechanism solves the position tracking difficulty while enabling accurate half-vehicle loading tests.
Solution Approach 2:
The patent creates a virtual copy of the vehicle chassis position using the position-measuring platform and actively replicates this position on the active platform through motor control. This copying approach allows the unloaded half-vehicle to be tracked accurately without requiring physical presence, thus improving test accuracy while maintaining operational feasibility.
2Reliability
If a whole vehicle loading platform is used for suspension tests, then the test comprehensiveness is improved, but the test cost increases significantly
Solution Approach 1:
The patent divides the vehicle into two separate halves, with only one half (the loaded half) requiring physical presence on the test platform. The other half is represented by a position-measuring platform that tracks and synchronizes with the loaded side. This segmentation reduces the required platform capacity and associated costs while maintaining comprehensive suspension test capability.
Solution Approach 2:
The patent introduces a position-measuring platform as an intermediary between the loaded half-vehicle and the testing system. This intermediary captures position data and transmits it to the active platform control system, enabling comprehensive suspension testing of the loaded half without requiring the entire vehicle to be physically present, thus reducing test costs.
3Loss of energy
If a 1/4 vehicle model is used for suspension testing, then the test cost is reduced, but the suspension performance results deviate significantly from actual situation
Solution Approach 1:
The patent uses a position-measuring platform that creates a virtual copy of the unloaded half-vehicle's position and characteristics. This copying approach allows the system to simulate half-vehicle conditions more accurately than 1/4 scale models while still reducing costs compared to whole-vehicle testing, thereby improving measurement precision without proportionally increasing cost.
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 solution enables accurate and economical performance testing of heavy vehicle suspension systems by ensuring precise position tracking and load feedback, improving the mechanical synchronization precision and control response, while maintaining a compact and flexible device structure.
Implementation Method 1
A plurality of weighing sensors is provided on the position-measuring platform
Implementation Method 2
a second corner of the active triangle frame is hinged to the rack and connected to an inverter motor through a transmission device
Data Source
AI summary
Disclosed is a half-vehicle floating device and a half-vehicle position tracking method based on load feedback. The device includes a rack, an active platform, a position-measuring triangle frame and a position-measuring platform. Guide rails corresponding to the active platform and the position-measuring platform are provided vertically on the rack. The active platform and the position-measuring platform are respectively placed on a corresponding rail through a slider. The bottom of the active platform is hinged to a first corner of an active triangle frame through an active slider rod, and a second corner of the active triangle is hinged to the rack and connected to an inverter motor through a transmission device. The bottom of the position-measuring platform is hinged to a first corner of the position-measuring triangle frame through a position measuring slider rod, and a second corner of the position-measuring triangle frame is hinged to the rack.