A tether tension control device and method

Abstract

The invention discloses a tether tension control device and method. The method firstly collects, amplifies, regulates and filters a tether tension signal to ensure that an effective tension feedback value and a tether tension value given by a tension closed-loop controller are performed. Comparison; according to the tension deviation value, the anti-rolling control of the tether is carried out; when the tether tension has a large step, the overshoot of the tether tension is suppressed; in order to prevent the tether from loosening during the rope retraction or release, the tether is used. Rope anti-slack control; according to different tension values, segmented PI control is adopted; in order to avoid the state mutation caused by frequent switching of the tether at different speeds, the tether driver adopts different control strategies when running at high speed and low speed. The above method solves the problems of the tether tension signal drift, the crushing damage after repeated actions of the tether, the overshoot of the tension, and the slack winding of the tether when the temperature changes in a wide range in the space environment.

Description

technical field [0001] The invention belongs to the design field of aircraft flexible assembly control based on tether connection, and in particular relates to a tether tension control device and method. Background technique [0002] The use of space rope nets to capture non-cooperative targets is a new flexible capture method, which has the advantages of long net capture distance, large envelope range, and weak coupling between aircraft. After completing the target acquisition, the aircraft uses its own fuel to perform the towing task. The tension control of the tether during the towing process of capturing the target has an important impact on the attitude stability of the aircraft, and is a key technology for the on-orbit towing of the aircraft. [0003] Maintaining the effective small tension of the tether (on the order of 1N) for a long time during the dragging process of the aircraft is a typical working state of the tether retraction control. Dynamic tension, so the...

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, due to changes in the space environment and temperature, problems such as tether tension signal drift, tether damage after multiple movements, tension overshoot, and tether loose winding often occur.

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