Springs are used for various purposes, particularly for vibration control and the removal of machines. However, the use of a spring generates a high amplitude at the resonance point; therefore, it is difficult to suppress vibrations from all frequency bands. To solve this issue, a variable rate spring is developed, which is a magnetic spring. This variable rate spring can change its spring constant. An experiment is carried out by placing compression and magnetic springs along the same axis to miniaturize the experimental device. Basically, the natural frequency of the vibration system fluctuates with changes in the spring constant. As a result, the problem can effectively be resolved by changing the resonance point and suppressing the vibration. The variable rate spring consists of magnetic and compression springs; the utility of the spring is verified by an experiment and a simulation.
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