论文部分内容阅读
在研制卫星姿控飞轮时,精确测试出轴承摩擦力矩十分重要。测试的手段和原理虽有多种,但最常用的方法是“滑行法。”其原理是在真空条件下,让电机通过摩擦离合器带动飞轮高速旋转,当达到规定的转速后使电机的动力在高速下与飞轮脱离,以便让飞轮独立旋转,并逐渐在摩擦力矩的作用下自由减速,直到停止。在减速运转的同时,测试出飞轮的n=f(t)滑行速度曲线图。然后再根据动量定理即可求出轴承摩擦力矩“M”。从上述测试原理
When developing the satellite attitude control flywheel, it is very important to precisely test the bearing friction torque. The test method and principle although a variety of, but the most commonly used method is “taxiing method.” The principle is under vacuum, let the motor friction clutch through the flywheel high-speed rotation, when the required speed after the motor power in the High-speed and flywheel disengaged, so that the flywheel independent rotation, and gradually under the action of friction torque to slow down until stopped. In deceleration at the same time, test out the flywheel n = f (t) taxi speed curve. Then according to the momentum theorem to find the bearing friction torque “M”. From the above test principle