Same Time Domain Multi-Frequency Band Hydraulic Testing System and Control Method Therefor

A control method utilizing same-time-domain multi-frequency band hydraulic system to conduct hydraulic test, comprising the following steps:

• (1) setting up the factor of the initial period for loading (k) of the hydraulic system and calculating the initial period for loading (tc) of the hydraulic system according to the operating performance of the hydraulic testing system, loading speed required by the test (vy), and the control frequency of the hydraulic system (fmin), wherein k is a positive integer greater than or equal to 2;
• (2) calculating the maximum acceleration (amax) of the initial loading based on the loading speed required by the test (vy) and the initial period for loading (tc) of the hydraulic system in said step (1), wherein regarding the loading speed required by the test (vy) and the maximum acceleration (amax), during the loading process of the hydraulic test, the hydraulic system simultaneously satisfies that the actual loading velocity (v) is equal to the loading speed required by the test (vy) and that the actual loading acceleration (a) is less than or equal to the maximum acceleration (amax);
• and (3) applying the loading way of segment increment to the maximum acceleration (amax) in the initial loading phase of the hydraulic system, wherein the number of segment (i) is a positive integer of 2 or 3, wherein the actual loading velocity (vi) that controls each phase is equal to the loading speed required by the phase (vyi), wherein the actual loading acceleration (ai) is less than or equal to the maximum acceleration of that phase (amaxi), wherein the high-frequency data processing system conducts high speed computing and processing according to the control method for the hydraulic system to launch a hydraulic test with the signal input thereby, which further eliminates the hydraulic impact.