Eight-rod connecting type non-contact satellite platform load pose adjusting device and method

Abstract

The invention discloses an eight-rod connecting type non-contact satellite platform load pose adjusting device and method. The device is mainly composed of a vertical unit comprising four identical vertical installation force executors and a horizontal unit comprising four identical horizontal installation force executors. The eight force executors are all arranged between a satellite service module and a loading module, and the satellite service module and the loading module are connected into a whole through bolts. The vertical installation force executors and the horizontal installation force executors are arranged in a circular array relative to the central axis of a platform and arranged in a mutually staggered mode, and the eight force executors are integrally arranged in an orthogonal mode. On the basis of the basic mechanical principle that the pose is not affected when resultant moment is zero and horizontal movement is not generated when resultant force is zero, six-degree-of-freedom pose adjustment of horizontal movement and rotation of a load can be achieved through the combination of telescopic movement of the force executors of the eight-rod connecting type non-contact satellite platform load pose adjusting device.

Description

technical field [0001] The invention relates to the field of aerospace technology, more specifically, to a device and method for adjusting the load position and attitude of an eight-bar connection non-contact satellite platform. Background technique [0002] The high-precision attitude control of integrated satellites with traditional platforms and payloads rigidly connected is mainly based on momentum exchange devices. A typical representative is a flywheel, which has the advantages of not interfering with the movement of the satellite's center of mass. However, the high-speed rotation of the flywheel requires high support. At the same time, the vibration caused by its imbalance is particularly obvious, which seriously affects the pointing accuracy and stability of the satellite's optical axis, and is one of the main restrictive factors for the development of high-resolution imaging. [0003] At present, a lot of research has been done on the vibration suppression of rotati...

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Problems solved by technology

In view of this, a non-contact satellite platform configuration has been developed abroad, using a voice coil motor to form a six-rod Stewart platform. When the coil is energized, it will generate a magnetic levitation effect with the permanent magnet, and realize the three-axis attitude of the load under the condition of isolating platform interference. control, but its attitude control coupling in each direction is serious, and it is necessary to solve the complex Jacobian matrix, and when the Jacobian matrix is ​​singular, it leads to no solution, which greatly increases the complexity of the spacecraft attitude control system and is difficult for practical application

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