本发明的车辆导航装置监测车辆速度，并根据车辆速度变化自动调节语音服务音量。
It monitors the speed of the vehicle and regulates the volume of phonetic service automatically based on the varying vehicle speed.
通过对追踪装置水平转动速度，俯仰调节角度和太阳光线检测等方面的测试，表明该系统可以实现自动追踪，运动灵活，调节准确。
Based on the tests of angular velocity, the turning Angle and the accuracy of solar orientation, this auto-tracking system was proved effective.
为了提高卷缆装置自动放缆和收缆的可靠性，提出了通过控制卷缆电机通电电压来实现其卷缆速度自动调节的数控方法。
On the basis of it, he brings forward a new design method of electric roll-cable device, presents its control strategy.
为了提高卷缆装置自动放缆和收缆的可靠性，提出了通过控制卷缆电机通电电压来实现其卷缆速度自动调节的数控方法。
On the basis of it, he brings forward a new design method of electric roll-cable device, presents its control strategy.
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