a step exciter

Abstract

The invention provides a phase step exciter and belongs to the technical field of stiffness tests. The phase step exciter is characterized by comprising a compression handle (1), a fixed shell (4), a clamping mechanism (5), an operating component (6), an energy storage spring (7), a linear bearing (8) and a baffle (10). The phase step exciter has the advantages that an overall system is simple in structure, so that the design cost is effectively reduced; the clamping mechanism and the operating handle are adopted by the phase step exciter, operation is easy and convenient, and common workers can complete relevant operation; a magnitude adjusting nut is installed on the phase step exciter, and step signals for inputting different magnitudes can be set; in this way, the drive mode is changed, the working principle of the phase step exciter is also changed, the structural type is changed, and the phase step exciter has the advantages of being convenient to carry, easy to operate, simple in structure and low in cost, causing low degree of population and the like.

Description

technical field [0001] The invention belongs to the technical field of stiffness experiment and specifically relates to an improvement of an exciter. Background technique [0002] The step vibrator is widely used in the design and test environments of aviation, aerospace, ships, etc., and is one of the indispensable equipment for testing the stiffness performance of the system. Existing step actuators use hydraulic pressure as the driving element, which has relatively strict requirements on the environment. Figure 6 As shown, it mainly includes: hydraulic cylinder 20, servo valve 21, oil hose 22, hydraulic vehicle 23, control system 24, etc. The hydraulic vehicle 23 provides pressure oil, and the pressure oil passes through the very long oil hose 22 and the servo valve. 21 is connected, the control system 24 sends a step command to the servo valve 21 according to the test requirements, the servo valve 21 is opened, the hydraulic oil enters the hydraulic cylinder 20, and the...

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Problems solved by technology

[0003] according to Image 6 As shown, because the hydraulic vehicle 23 is relatively large in size, heavy in weight, requires oil sources, and has high noise, it has strict requirements on the test environment and serious pollution to the test environment, and it is inconvenient to move when the test environment changes, especially in the field Experimental, not easy to carry

[0004] Secondly, because the oil hose 22 is relatively long, it is difficult to install due to the influence of the test environment space, and the viscoelasticity of the longer oil hose is significant, which affects the servo accuracy of the system and cannot well meet the test requirements.

[0005] Again, the step actuator contains many components, including the control system 24, the hydraulic system hydraulic vehicle 23, the servo valve 21, the hydraulic cylinder 20, and the oil hose 22, so the design cost of the entire system is relatively large. In addition, each component Connected by pipelines or cables, the installation and debugging process of the system is complicated. Thirdly, the operation of the whole system needs to be operated by personnel with relevant knowledge, so the requirements for test personnel are relatively strict.

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