Method and equipment for inertia parameter identification

Brancati, Renato; Russo, Riccardo; Savino, Sergio

doi:10.1016/j.ymssp.2009.06.008

Cited by 39 publications

(23 citation statements)

References 9 publications

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“…However, the above measurement algorithm and methodology mainly involve common measurement procedures for mass characteristics, and the measurement of centroid position can be achieved via three point weighting, suspension, and balancing method. There are three main safe and popular methods to measure the moment of inertia: period of free oscillation, torque, and pendulums methods [14,15,23]. However, there are several drawbacks to implementing these methods.…”

Section: Introductionmentioning

confidence: 99%

Novel Measurement Method for Determining Mass Characteristics of Pico-Satellites

2018

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Abstract:The centroid and moment of inertia directly affect the dynamic characteristics of aircraft, and accurate mass characteristic measurements are crucial to adequately control aircraft attitude. This paper proposes a new measurement method for determining aircraft mass characteristics that can improve measurement precision when used in regard to pico-satellites. The measurement system is designed according to the principles of three-point measure and constant torque. The feasibility of the test method of this study for determining the mass characteristics is proved by using a dynamic simulation and an experimental analysis method. Through a number of standard workpiece tests, the deviation of the measurement system and effective compensation methods of the mass characteristics are obtained. The measurement system and compensation methods are applied to measure the mass characteristics of a pico-satellite, which can be detected by only one time clamping. The measurement system proposed herein can effectively improve measurement precision, as it was found that the accuracy of the centroid and the moment of inertia of the pico-satellite are less than 1 mm and 1.5 × 10 −2 kgm 2 , respectively. The proposed measurement system also has many advantages, such as a simple operation, high efficiency, small volume, and low cost.

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Section: Introductionmentioning

confidence: 99%

Novel Measurement Method for Determining Mass Characteristics of Pico-Satellites

2018

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“…Almeida [10] provides the group of modal methods, where the rigid body properties are estimated from a modal analysis identification procedure. Renato Brancati [11] proposes an equipment and a procedure for the determination of large object inertia parameters. Measurement is based on the application of a least-square optimization technique on data from force and displacement sensors on the test bench.…”

Section: Introductionmentioning

confidence: 99%

Development Identification Method of Inertia Properties for Heavy Truck Engine Based on MIMS Test Rig

Zhu

Zhang

et al. 2018

MATEC Web Conf.

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A new development for the accurate measurement of the inertia parameters for heavy truck engine is presented. It is specifically intended for measuring the inertia properties of vehicle bodies, and it has the potential to be applied to the measurement of the properties of vehicle bodies, such as the vehicle powertrain, engine, and gearbox. This paper, based on CATARC MIMS test rig, develops an accurate measuring method to identify inertia parameters of heavy truck engine. Firstly corresponding tests are carried out and the lever principle and moments of inertia parallel theorem are employed to calculate and analyze the test results, which leads to the accurate value of inertia parameters. Secondly the accuracy of proposed method is verified through the calibration system. As a result the method shows high accuracy, which provides an experimental basis for accurate inertia parameters measurement of heavy truck engine.

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“…As this parameter is strongly related to the user weight and position, it is not available from CAD data. Moreover, experimental measurements need a special set-up to make the wheelchair and user rotate or oscillate around the vertical axis (Griffiths et al 2005;Wang et al 2007;Brancati et al 2010;Eicholtz 2010).…”

Section: Introductionmentioning

confidence: 99%

A new dynamic model of the wheelchair propulsion on straight and curvilinear level-ground paths

Chénier

Bigras

Aïssaoui

2014

Computer Methods in Biomechanics and Biomedical Engineering

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Independent-roller ergometers (IREs) are commonly used to simulate the behaviour of a wheelchair propelled in a straight line. They cannot, however, simulate curvilinear propulsion. To this effect, a motorised wheelchair ergometer could be used, provided that a dynamic model of the wheelchair-user system propelled on straight and curvilinear paths (WSC) is available. In this article, we present such a WSC model, its parameter identification procedure and its prediction error. Ten healthy subjects propelled an instrumented wheelchair through a controlled path. Both IRE and WSC models estimated the rear wheels' velocities based on the users' propulsive moments. On curvilinear paths, the outward wheel shows root mean square (RMS) errors of 13% in an IRE vs 8% in a WSC. The inward wheel shows RMS errors of 21% in an IRE vs 11% in a WSC. Differences between both models are highly significant (p < 0.001). A wheelchair ergometer based on this new WSC model will be more accurate than a roller ergometer when simulating wheelchair propulsion in tight environments, where many turns are necessary.

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Method and equipment for inertia parameter identification

Cited by 39 publications

References 9 publications

Novel Measurement Method for Determining Mass Characteristics of Pico-Satellites

Novel Measurement Method for Determining Mass Characteristics of Pico-Satellites

Development Identification Method of Inertia Properties for Heavy Truck Engine Based on MIMS Test Rig

A new dynamic model of the wheelchair propulsion on straight and curvilinear level-ground paths

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