Abstract
In view that the angular vibration excitation source of conventional torque motor can hardly exceed 100 Hz and has high waveform-distortion, a frame structure electromagnetic actuation method was proposed to decrease the inductance of the driving coil to implement the fast response of the driving force. The precise light hollow bearing was used to locate the shafting to overcome the friction and improve the rotary precision of the system. The finite element method was used to optimize the design of hollow bearing rotor and excitation coil frame structure, and the natural frequency of the shafting was improved to 2800 Hz. The testing result of the angular vibration excitation equipment indicates that the range of the working frequency achieves 600 Hz, and the waveform distortion of angular acceleration is decreased to 2%. The system can bear the weight of 1 kg and the angular acceleration of 1760 rad/s2, which exceed the PTB-required bearing weight of 50 g and the angular acceleration of 1400 rad/s2, and this technology can be used to calibrate the angular vibration with high precision and evaluate the dynamic performance of angular vibration sensor.
| Original language | English |
|---|---|
| Pages (from-to) | 840-844 |
| Number of pages | 5 |
| Journal | Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology |
| Volume | 21 |
| Issue number | 6 |
| Publication status | Published - Dec 2013 |
Keywords
- Angle-vibration table
- Angular acceleration
- Angular rate
- Angular vibration
- Gyro