A ball socket nozzle load characteristic identification method for servo system load matching

An identification method and servo system technology, applied in the direction of control/adjustment system, torque/mechanical power control, non-electric variable control, etc., can solve problems such as useless theoretical basis and engineering application experience, to meet performance requirements, achieve matching effect

Active Publication Date: 2019-05-07
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Problems solved by technology

This has resulted in a double contradiction between the inherent load characteristics of the ball-and-socket nozzle and the performance index requirements of the control system.
[0006] Whether it is basic

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  • A ball socket nozzle load characteristic identification method for servo system load matching

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Embodiment Construction

[0017] A ball and socket nozzle load characteristic identification method oriented to servo system load matching of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] The design and use of ball-and-socket nozzles for solid motors is still in its infancy in China, and the research on its load characteristics mainly depends on the servo system to explore its load characteristics through experiments. According to the analysis, the load characteristics of the large ball-and-socket nozzle mainly include the friction moment of the library wheel, the viscous friction moment, the elastic moment and its own inertia moment. Therefore, the present invention relates to the Coulomb friction moment identification method, the viscous friction moment identification method, and the elastic moment identification method. The moment of inertia of the ball-and-socket nozzle is determined by its own moment of inertia and th...

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Abstract

The invention belongs to the technical field of electromechanical servo systems, and particularly relates to a ball socket nozzle load characteristic identification method for servo system load matching. The method comprises a coulomb friction torque identification method, a viscous friction torque identification method, an elastic torque identification method and an inertia torque calculation method. By means of the method, accurate load characteristic parameters of a large ball socket nozzle can be identified, matching of the servo system and the load characteristics of the ball socket nozzle is achieved, and the performance requirement for thrust vector control of a solid rocket is met.

Description

technical field [0001] The invention belongs to the technical field of electromechanical servo systems, and in particular relates to a ball-and-socket nozzle load characteristic identification method for servo system load matching. Background technique [0002] Servo system is a collective name for the closed-loop system of the flight control of the launch vehicle. One of its typical applications is to push the engine nozzle to achieve thrust vector control and complete the control of the rocket attitude. In the past, due to the constraints of objective conditions, technological level and technical reserves, all the full-axis swing single nozzles of medium and large solid launch vehicles in my country used flexible nozzles. After decades of development, in the process of technological progress and engineering experience accumulation, the load characteristics of large flexible nozzles have been fully grasped, that is, the load characteristics of the linear elastic moment grad...

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Application Information

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IPC IPC(8): G05D17/02
Inventor 张中哲杨金鹏史晨虹徐志书潘龙高健
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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