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| The Measurement of Nine Inertial Parameters of Rigid BodyBased on the Moment of Inertia |
| WANG Jin,SUN Ning |
| School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, China |
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Abstract For three-dimensional space, a new method which can measure the nine inertial parameters of a rigid body simultaneously is proposed.With the law of motion that when aerostatic bearing move slowly its angular velocity is a single exponential function decayed with time, the moment of inertia of the rigid body rotating a axis in an arbitrary direction is obtained. through nine measurements, the inertial parameters of a rigid body can be got finally. A set of instrument used for measuring the rigid body inertial parameters is designed. This instrument can measure the nine inertial parameters of a rigid body in three-dimensional space simultaneously. There’s no need to re-assembly in the process of measurement, so intermediate testing quantity, error made by human and measuring time are all reduced.
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2012, Vol. 33 
