Multi-Frequency Hydraulic Testing System with High-Speed Data Processing
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Solution Overview
Problem
Conventional hydraulic testing systems face limitations in accurately describing stress-strain and complete curves due to low measurement frequency, leading to incomplete characterization of material properties, and are prone to hydraulic impact issues that can damage equipment and samples, as well as pose safety risks.
Innovation Solution
A same-time-domain multi-frequency band hydraulic testing system is introduced, replacing the conventional data processing system with a high-frequency system and adding a dynamic measuring system, utilizing a control method based on loading speed, acceleration, and segment incremental loading to prevent hydraulic impact, enhancing system reliability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional static measuring system is used in the hydraulic testing system, then the system structure is simple and cost-effective, but the measurement frequency is not high enough to adequately describe the full view of stress-strain curve and complete curve characteristics
Solution Approach 1:
The patent merges the static measuring system and dynamic measuring system into a unified hybrid measuring system. The static measuring system (load cells, displacement sensors) and dynamic measuring system (acceleration sensors, high-frequency data acquisition) are integrated to work together, allowing the system to capture both low-frequency static characteristics and high-frequency dynamic characteristics of material testing, thereby achieving comprehensive stress-strain and complete curve characterization without requiring completely separate independent systems
Solution Approach 2:
The hybrid measuring system is designed to perform multiple functions: it can conduct both static stress-strain curve testing and dynamic complete curve testing with high-frequency response capability. The system universally handles different testing requirements (static and dynamic) through a single integrated platform, eliminating the need for separate dedicated systems for each testing mode
2Productivity
If the hydraulic system operates with high loading speed to improve productivity, then the testing efficiency increases, but hydraulic impact occurs causing equipment damage and safety risks
Solution Approach 1:
The control system performs preliminary action by calculating and determining the maximum acceleration value before the actual loading process begins. This pre-calculated acceleration limit is used to generate a controlled loading curve that prevents hydraulic impact from occurring in the first place, rather than reacting to impact after it happens. The system proactively adjusts the loading profile to stay within safe acceleration boundaries
Solution Approach 2:
The system implements real-time feedback by continuously monitoring the actual acceleration during loading and comparing it against the pre-calculated maximum acceleration value. The high-frequency data acquisition system captures real-time loading parameters, and the control system dynamically adjusts the loading rate based on this feedback to prevent hydraulic impact while maintaining high testing efficiency
3Measurement precision
If a dynamic measuring system is added independently to collect data, then the measurement frequency and dynamic characteristics improve, but the system complexity increases and the dynamic measuring system cannot feedback for controlling the test
Solution Approach 1:
Rather than maintaining completely independent static and dynamic measuring systems, the patent merges them into an integrated hybrid measuring system where data from both systems is combined and processed together. The load cell data, displacement sensor data, and acceleration sensor data are synchronized and processed by a unified control system, enabling real-time feedback control while avoiding the complexity of coordinating multiple separate independent systems
Data Source
AI summary
A same-time-domain multi-frequency band hydraulic system, comprising a high-frequency data processing system, a control system, an executive system, a load, a static measuring system, and a dynamic measuring system, wherein the high-frequency data processing system processes the input command signals, data from the dynamic measuring system, and data from the static measuring system, and automatically generates, displays, and saves same-time-domain multi-frequency band test result data, wherein part of input signals are converted into input signals of the control system by the high-frequency data processing system and executed by the executive system, wherein the frequency response and measurement accuracy of the dynamic measuring system and the front-end data processing system meet the requirements of both the test and the hydraulic testing system.