Experimental study of combined vibration protection system of precision equipment

Test results of the combined vibration protection system for suppressing oscillation precision equipment are considered. In-depth analysis was carried out theoretical research in the field of vibration protection systems. These studies are not sufficient to develop in this field of science. In the fact that in general as power elements are considered electromagnetic devices. However, in most cases, electromagnetic fields adversely affect the operation of precision equipment mounted on vibration protection table. This bring about us to seek the possibility of using an actuators using alternative forms of energy. One such case is the energy of the compressed gas. Among the actuators, is widely used in pneumatic systems occupy a special place rubber-cord casing. They have a high load capacity, low stiffness and significantly cheaper than pneumatic cylindrical actuators. However, it has a serious drawback, which is that only provide one-way force direction. Reversal of these devices is carried out by the weight of equipment which installed on them, or by spring element. It is decided in the actuator design of the system to use the reverse gear, like those used in the direct stress machine. Rubber-cord casing mounted on the reverser eliminates the elastic elements of the reverse and make the process controllable. Thus, one shell acts as a passive vibration protection, and the other two in the active system. Working at the same time they combine into vibration protection system. The study developed a mathematical model of combined vibration protection system with throttle control gas pressure in the actuators showed its effectiveness in the low frequency range. For laboratory tests designed and built an experimental complex that includes the oscillation excitation system, the implementation of a combined power system, control system and measuring and computing complex. Tests were conducted on the experimental stand with a speed based automatic control system for protected object. The results show the effectiveness of combined vibration protection system in comparison with the tests of only a passive system. The evaluation of quality combined with vibration protection system uses integral criteria showed its effectiveness compared to a passive vibration protection system with harmonic excitation by up to 40%. Received test results are the difference in the low-frequency range of the working area with a Range of mathematical modeling of data at the level of 10%.