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CONTINUOUS TRACKING OF HELIOSTATS

机译:连续跟踪定日镜

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摘要

Tracking motions in current heliostats are usually performed in discrete steps, even though the motion of the sun is continuous. Aiming errors due to the discrete steps are often about 1 mrad or more. A significant reduction of tracking error by smooth continuous tracking is presented. The implementation uses an electronic speed control unit to modify the rotational speed of the two AC motors on an existing heliostat. The continuous tracking system was implemented and successfully operated at the Weizmann Institute heliostat field. Measurements of heliostat motion show that aiming error due to tracking intervals was practically eliminated. A comparison of heliostat motions and flux on the target in step-tracking and continuous tracking modes is reported.
机译:即使太阳的运动是连续的,当前定日镜中的跟踪运动也通常以不连续的步骤执行。由于离散步骤而导致的瞄准误差通常约为1毫拉德或更高。提出了通过平滑连续跟踪显着减少跟踪误差的方法。该实现使用电子速度控制单元来修改现有定日镜上的两个AC电动机的转速。连续跟踪系统已在Weizmann Institute定日镜领域实施并成功运行。定日镜运动的测量结果表明,由于跟踪间隔而导致的瞄准误差已基本消除。报告了定日镜运动和目标跟踪上的步进跟踪和连续跟踪模式下的通量的比较。

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