Regular ArticleDetermination Of Rigid Body Characteristics From Time Domain Modal Test Data
References (0)
Cited by (49)
On state and inertial parameter estimation of free-falling planar rigid bodies subject to unscheduled frictional impacts
2019, Mechanism and Machine TheoryCitation Excerpt :Surveys of methods for the identification of the above-mentioned inertia properties can be found in [11] or, for the particular case of modal analysis, in [12]. When the object is relatively accessible for the process, a modal analysis can be performed, as in [13] and [14], with the use of platforms on springs. A well rooted method for inertia identification requires the use of a multifilar pendulum.
Measurement of the mass properties of rigid bodies by means of multi-filar pendulums – Influence of test rig flexibility
2019, Mechanical Systems and Signal ProcessingRigid body stiffness matrix for identification of inertia properties from output-only data
2016, European Journal of Mechanics, A/SolidsCitation Excerpt :A simple and less expensive extension of the Pendulum method was proposed in (Zhi-Chao et al., 2009). Another time domain method was proposed in (Pandit and Hu, 1994) that uses transformation of the translational motion to the rotational and translational motion in order to identify the inertia properties. Pandit et al. used time domain data in six axes for identification of the inertia properties from impact data (Pandit et al., 1992).
Improved automated diagnosis of misfire in internal combustion engines based on simulation models
2015, Mechanical Systems and Signal ProcessingCitation Excerpt :Moreover, the modal property method is based on the rigid body modes so it is the only method that can solve for the corresponding stiffness and damping matrices from the measured vibration data. The details of this method can be found in [45–47]. As discussed in the preceding section, the rotations of the engine block (pseudo angular acceleration) were used for misfire diagnosis in this paper.
An improved pendulum method for the determination of the center of gravity and inertia tensor for irregular-shaped bodies
2011, Measurement: Journal of the International Measurement ConfederationCitation Excerpt :It is a huge task to accomplish the three-dimensional solid modeling of an irregular-shaped body with all details, so the calculation method based on the CAD model is seldom used. The methodology based on experimental modal analysis is simple in positioning postures of the body when identifying the C.G. and the inertia tensor, but with this method too many parameters need to be identified, the principle is complicate, the error analysis is difficult and the hardware requirements are expensive [8,12]. Moreover, the modal analysis method is sensitive to measurement noise, selection of response measurement points and excitation conditions [4].
A method for measuring the inertia properties of rigid bodies
2011, Mechanical Systems and Signal ProcessingCitation Excerpt :By this approach, the accuracy can be high, but usually cumbersome hardware and long testing time are required to obtain all of the required rotation axes. By the second approach, the body is made to move in order to excite all of his rigid modes [16–19]. The motion can be just a vibration [16,17] or a complex non-linear motion [18–20], depending on the different implementations.