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在自然界中或者是住备技术领域中,都会遇到“振动”。例如机器运转时会产生振动,电路中电流(或电压)的振动,甚至在微观世界中原子的各组成部份也都在振动。虽然这些振动的形式是各式各样,其反映的物理本质也各不相同,但它们的基本规律是共同的。振动规律这一普遍性,一般的概念是:某物理量随着时间而变化因而可以用某种函数来表示该物理量,而函数的自变量则为时间。这些随时间变化着的物理量可以是电流、电压、液体压力、位移、速度,加速度和力等等。
In nature or in the field of preparedness technology, will encounter “vibration.” For example, vibration occurs when the machine is running, and the current (or voltage) in the circuit vibrates, even in the microscopic world. Although the forms of these vibrations are varied and the physical essences reflected by them vary, their basic laws are common. The universality of the law of vibrations, the general concept is: a physical quantity changes over time and thus can be used to represent a certain function of the physical quantity, while the function of the independent variables as time. These physical quantities that change over time can be currents, voltages, fluid pressures, displacements, velocities, accelerations and forces, and so on.