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When crystal oscillator applied in high dynamic host vehicle, dynamic loads impact its short and medium-term stability. In order to suppression and/or reduction these impacts, gyroscopic mounting is proposed to install oscillator on it.
In high dynamic GNSS receivers, replica carrier is polluted by dynamic loads which modulated on it and generate clock drift as frequency and phase error. These dynamic loads consist of steady state acceleration, sinusoidal vibration, mechanical and acoustic random vibrations. As steady state load exists all over the trajectory and causes great phase deviation, therefor phase lock is lost and the sensitive...
The input gears from the first stage of a combine harvester gearbox have been subjected to experimental testing. A three-dimensional finite element model was established by using Solid Works and the effect of an external load distribution along the gear tooth width was added according to actual working situations. In the Solid Works/Simulation module, the contact relation was established based on...
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