Estimation of Inertia Tensor and Centre of Gravity of a Vehicle on the Three Axes Platform and a Test Rig used thereof

Patent Status: 

Patent Filed

Indian Patent Applicaton No: 

2365/DEL/2007

Patent Category: 

Overview: 

Estimation of the mini-helicopter inertia and centre of gravity location.

Key Features: 

  • A three DOF test rig which has locking devices to lock any or all oscillatory motions. Three pairs of linear springs are used to retain the motions about the three axes.
  •  Natural frequencies were measured by employing Inertial Measurement Unit [IMU] which has two traids of accelerometer and rate-gyro.
  • Least squares method is used to estimate the inertia and CG location of the mini-helicopter.
  • The invention is simple in construction and efficient.

Applications: 

  • Automobile, Aerospace and Aviation industry.

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