Inspection mass unit based on optically floating particles and ground verification system for drag-free control

Abstract

The present application belongs to the field of aerospace control technology, and specifically discloses a test mass unit based on optically floating particles and a drag-free control ground verification system. The test mass unit includes a unit body, a carrier, optically floating particles, a support capture module, a drive module and a laser light source; the interior of the unit body is set as a vacuum chamber, and the carrier, optically floating particles, the support capture module and the laser light source are all set in the vacuum chamber; the optically floating particles are set on the carrier; the laser light source emits a laser beam, which passes through the support capture module and the carrier in turn and shoots at the optically floating particles; the support capture module adjusts the optical force of the laser beam so that the laser beam captures the optically floating particles and suspends the optically floating particles on the carrier; the drive module controls the suspended optically floating particles to move. Through the present application, the control of the test mass in six degrees of freedom can be achieved, ensuring the effectiveness of the drag-free control ground verification, and it is easy to use, avoiding the processing difficulties of the existing test mass structure.

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