Measurement of the inertia tensor: An experimental proposal

Gentile, Angelo; Mangialardi, L.; Mantriota, Giacomo; Trentadue, A.

doi:10.1016/0263-2241(94)00030-b

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…In recent years, a variety of special-purpose measurement devices have been developed that allow highly accurate measurements of inertia moments [2][3][4][5][6][7]. A feature these devices have in common is that the test structure is mounted onto a moving support platform, which is either driven by actuators [2][3][4] or able to perform free oscillations [5][6][7]. Having to support the full weight of the test structure, these devices tend to be large and expensive.…”

Section: Current Identification Methods For Rigid Body Propertiesmentioning

confidence: 99%

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Experimental identification of rigid body inertia properties using single-rotor unbalance excitation

Kloepper

Okuma

2009

Proceedings of the Institution of Mechanical Engineers, Part K:

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This article proposes a new experimental method for the identification of rigid body inertia properties. The test structure is suspended in an elastic wire and excited by a single-rotor unbalance actuator. Unlike a conventional shaker or impulse actuator, the proposed actuator can be rigidly attached to the test structure, whereby accurate alignment is made relatively easy. Moreover, because of a sensorless single-rotor design, the actuator can be built at minimal cost. Both the excitation force and the rotation frequency required as feedback to control the actuator are derived from the structure's acceleration response signal; as a result, the experiment requires no sensors other than one accelerometer. The acceleration response measurements are used in an identification algorithm based on models of the unknown rigid body inertia properties and of the suspension properties. In the process of identifying the inertia properties, the suspension model prevents errors otherwise caused by suspension and gravity effects. The proposed method was applied to two test cases: a beam structure and an assembled motorcycle frame and engine. In both cases, accurate rigid body properties could be identified.

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Section: Current Identification Methods For Rigid Body Propertiesmentioning

confidence: 99%

“…The acceleration components (1)(2)(3)(4) in equation ( 49) are neglected, yielding f k = m e r e ω e n k × (ω e n k × n e ) (53) Equation ( 16) then follows from the fact that n e is normal to n k . The reasons for neglecting the acceleration components (1)(2)(3)(4) in equation ( 49) are as follows.…”

Section: Rigid Body Inertia Modelmentioning

confidence: 99%

Experimental identification of rigid body inertia properties using single-rotor unbalance excitation

Kloepper

Okuma

2009

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…Another approach utilizes the frequency response function or modal analysis in determining the inertial characteristic. This approach often involves the stiffness and damping characteristics of the support component [15][16][17][18][19] . The simplest method is suspending the rigid body with one or more cable and subjecting it to a pendulum motion [20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Heavy Military Land Vehicle Mass Properties Estimation Using Hoisting and Pendulum Motion Method

Risby¹,

Khalis²,

Tan³

et al. 2019

Def. Sc. Jl.

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Mass properties such as the centre of gravity location, moments of inertia, and total mass are of great importance for vehicle stability studies and deployment. Certain parameters are required when these vehicles need to be arranged inside an aircraft for the carrier to achieve proper mass balance and stability during a flight. These parameters are also important for the design and modelling process of vehicle rollover crash studies. In this study, the mass properties of a military armoured vehicle were estimated using hoisting and pendulum method. The gross total weight, longitudinal and vertical measurements were recorded by lifting the vehicle using a mobile crane and the data were used to estimate the centre of gravity. The frequency of vehicle oscillation was measured by applying swing motion with a small angle of the vehicle as it is suspended on air. The centre of gravity and mass moment of inertia were calculated using the vector mechanics approach. The outcomes and limitations of the approach as discussed in details.

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“…In refs 5,6 a large test rig can accurately estimate the RB inertia properties of vehicles and subsystems, and it is able to locate the COG, too. Further proposals can also be found in refs 7–9.…”

mentioning

confidence: 99%

Determining the Rigid-Body Inertia Properties of Cumbersome Systems: Comparison of Techniques in Time and Frequency Domain

Mucchi

Fiorati

Gregorio

et al. 2009

Experimental Techniques

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Measurement of the inertia tensor: An experimental proposal

Cited by 12 publications

References 2 publications

Experimental identification of rigid body inertia properties using single-rotor unbalance excitation

Experimental identification of rigid body inertia properties using single-rotor unbalance excitation

Heavy Military Land Vehicle Mass Properties Estimation Using Hoisting and Pendulum Motion Method

Determining the Rigid-Body Inertia Properties of Cumbersome Systems: Comparison of Techniques in Time and Frequency Domain

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