航天阀门摩擦力数字化采集系统设计与实现

Design and Implementation of Digital Friction Acquisition System for Aerospace Valves

航天阀门作为运载火箭的关键功能型自动控制元件,是运载火箭的单点失效产品,对阀门壳体与阀芯间的摩擦力精度要求比较严格.但是,传统的测量方法均采用人工放砝码,耗时、耗力、效率低,且容易引入误差,精度低.为了提高测量精度和生产效率,以增压单向阀为研究对象,设计了一套通用化的航天阀门摩擦力数字化自动采集系统.该自动采集系统主要由摩擦力检测机硬件和上位机控制采集两部分构成,可实现航天阀门摩擦力实时、精准的在线检测、数字化采集与记录.

As a key functional automatic control component of launch vehicle,space valve is a single point failure product of launch vehicle.It has strict requirements on the friction precision between valve shell and valve core.However,the traditional measurement method adopts manual weight release,which is time-consuming,low efficiency,easy to introduce error and low precision.In order to improve the measurement accuracy and production efficiency,this paper takes the booster check valve as the research object,and designs a general digital automatic collection system of aerospace valve friction,which is mainly composed of two parts:the hardware of friction detector and the control collection of upper computer.It can realize the real-time,accurate online detection,digital collection and recording of aerospace valve friction.