| 摘要 |
<p>A system for determining when one or more jacks on a vehicle have contacted the ground may include a pitch sensor that senses a pitch angle of the vehicle and a roll sensor that senses a roll angle of the vehicle. A jack extension system operatively associated with the vehicle jacks extends and retracts the one or more jacks on the vehicle. A control system operatively associated with the pitch sensor, the roll sensor, and the jack extension system monitors the pitch and roll sensors to determine the pitch and roll angles of the vehicle. The control system operates the jack extension system to lower the jacks to the ground and determines that the jacks have contacted the ground based on detected changes in the pitch and roll angles of the vehicle.</p> |
