2022年4月7日 · To approximate the measured frequency response function (FRF) of a structure as the sum of two single degree of freedom (1DOF) vibration systems, you can perform a …

2020年2月8日 · Purpose: An experimental–numerical study of an inverted pendulum system to control a reduced model of a main system is developed in this work. Method: Initially, a …

Our solution for a 2DOF system shows that a system with two masses will have an anti-resonance. So we simply turn our 1DOF system into a 2DOF system by adding another spring …

With reference to the frequency response function of a 1-dof system forced by an unbalanced mass (Fig. 3), during the washing cycle the machine is forced in the quasi-steady zone, while …

2020年2月8日 · An experimental–numerical study of an inverted pendulum system to control a reduced model of a main system is developed in this work. Initially, a dynamic system model …

As the FRF of the machining system is discovered, its modal parameters (e.g. eigenfrequencies, damping factors) can also be calculated, which has key role in the prediction of stability of...

2022年9月10日 · There are only four types of harmonically excited one-DOF systems: 1. base excitation, 2. eccentric excitation, 3. eccentric base excitation, 4. forced excitation. Base …

Dynamic measurements were conducted on a mechanical system to determine its FRF. Forcing functions with multiple frequencies were exerted on the system and a digital signal analyzer (F …

2021年5月20日 · Use 1DOF approximation from Task 1 to calculate the corresponding 1DOF AfCh. Think about the relationship between the AfCh (2DOF lectures) and FRF (1DOF …

The displacement x is defined with respect to the equilibrium position of the mass subjected to gravity. The effect of gravity should therefore not be taken into account in the equation of …