SAME TIME DOMAIN MULTI-FREQUENCY BAND HYDRAULIC TESTING SYSTEM AND CONTROL METHOD THEREFOR

摘要

A same-time-domain multi-frequency band hydraulic testing system and a control method therefor. The system includes a high-frequency data processing system (60), a control system (10), an execution system (20), a load (30), a static measurement system (40), and a dynamic measurement system (50). Input command signals, dynamic measurement system data and static measurement system data are generated, displayed and stored automatically as same-time-domain multi-frequency band hydraulic test data after processing by the high-frequency data processing system. Part of the input signal is converted into a control system input signal by the high-frequency data processing system, and is transmitted to the execution system for execution. The method includes controlling the loading speed, the actually detected loading speed (v) and acceleration (a) of the hydraulic system, and the newly-added maximal acceleration (a_max) according to the hydraulic experiment requirements. The maximal acceleration (a_max) can be loaded in sections incrementally, which can prevent hydraulic impact. Thus the reliability of the hydraulic system is improved, cracking and breaking of concrete samples (members) due to hydraulic impact are both prevented, secondary harm to humans and the environment is also avoided, and the reliability and efficiency of the whole system are improved. The high-frequency data processing system is used for carrying out high-speed calculation processing on the data of the static measuring system, so as to improve the response speed of the whole system to load feedback, and further improve hydraulic impact prevention.