Cement brick vibration table. Vibration platform National Day mold

耐磨：

100%

抗压：

100%

抗断裂：

100%

Shaking table
Direction deviation source model Vibration suppression model It can be seen from the figure and equation that the power spectrum of the platform vibration is low-pass, which can be regarded as a low-frequency disturbance. However, for the sending end, the information to be transmitted is emitted through the electro-optical conversion device and the terminal optical mirror. The vibration table is shown in Figure 3. The outgoing interference is equivalent to the incident interference for the vibration of the receiving end platform as shown in Figure 3, and its introduction point is different. The introduction of system platform vibration assumes that the electro-optical conversion device and terminal optical device of the sending terminal and receiving terminal are regarded as control objects and . If a closed-loop structure is adopted, the controllers are respectively and . Change Figure 3 into a control block diagram, as shown in the corresponding expression. Formula, for the exit end, the closed-loop controller is required to make the impact of platform disturbance on the exit direction small, that is, to. The gain is small for the incident end, in order to prevent the incident direction from affecting the capture and tracking process due to vibration of the receiving platform, so that the signal entering the receiving device: clean, that is, clear. The gain is small. It can be seen from the equation that the disturbance gain at the outgoing end and the incident end has the same form. Remove the subscript and call it the sensitivity function. Since the vibration suppression of the transmitting terminal and the receiving terminal has a unified form, the sensitivity function will be used in the following discussion. I took the design of the sending terminal as an example when I was young. Object Uncertainty Description From the previous analysis, it can be seen that in the composite axis control structure, there is perturbation in both the gimbal turret, the control object of the coarse aiming control subsystem, and the rapid tilt mirror, the object of the fine aiming control subsystem.