In-Vehicle Damping Force Variable Mechanism Inspection
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Solution Overview
Problem
The existing methods for examining the damping force variable mechanism of pressure damping devices require removing the device from the vehicle, which is time-consuming and labor-intensive, as they need to be tested in dedicated equipment separately.
Innovation Solution
An examination method and system that allow the detection of the damping force variable mechanism's output while it is installed in the vehicle, using a detection device to monitor changes in the vehicle's state when the mechanism is operated, and applying signals to assess the mechanism's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pressure damping device is removed from the vehicle for examination, then the examination can be conducted in dedicated equipment, but the time and effort required for removal and reinstallation increases significantly
Solution Approach 1:
The patent introduces a signal input device and detection device as intermediaries between the examiner and the damping force variable mechanism. These devices enable examination without removal by mediating the test signal input and output detection through the vehicle's existing systems, thus resolving the contradiction between examination accuracy and time consumption
Solution Approach 2:
The patent creates a virtual copy of the dedicated examination environment by using the vehicle's own control systems and detection devices. Instead of physically removing the device for examination, the system replicates examination conditions in-situ through signal input and output detection, eliminating the need for removal and reinstallation
2Reliability
If the pressure damping device is removed from the vehicle for examination, then the mechanism can be tested separately, but the labor effort and complexity of the examination process increases
Solution Approach 1:
The patent makes the vehicle's control systems and detection devices multi-functional by enabling them to perform both normal vehicle operations and damping mechanism examination. The signal input device can issue both control signals for vehicle operation and test signals for examination, while detection devices serve both vehicle monitoring and examination purposes, thereby reducing examination process complexity
Solution Approach 2:
The vehicle's own control systems and detection devices serve the dual purpose of vehicle operation and examination. The examination process leverages the vehicle's self-contained systems rather than requiring external dedicated equipment, simplifying the overall examination process while maintaining reliability
3Productivity
If the damping force variable mechanism is examined while installed in the vehicle, then the time and effort for removal is eliminated, but the ability to conduct comprehensive tests is limited
Solution Approach 1:
The patent implements dynamic examination capabilities by allowing the signal input device to issue varying test signals (including periodic signals at different frequencies) and the detection device to monitor changing vehicle responses. This dynamic approach enables comprehensive testing while the mechanism remains installed, maintaining both efficiency and flexibility
Data Source
AI summary
Provided is an examination method for a damping force variable mechanism, the examination method including: an operation step of operating a damper in a state in which the damper is installed in a vehicle, the damper being provided with a damping force variable mechanism that changes a damping force according to an input current (an example of a signal); and a detection step of detecting an induction current (an example of an output from the vehicle) from the damping force variable mechanism of the damper installed in the vehicle, wherein a detection device that performs the operation of the detection step is provided. Thus, the damping force variable mechanism of a pressure damping device can be examined in a state in which the damping force variable mechanism is installed in the vehicle.