导引头伺服机构干扰力矩测量及精密装配工艺优化

Measurement of disturbance torque of seeker servo mechanism and optimization of precision assembly process

为了在导引头伺服机构装配过程中减小干扰力矩,基于电测法搭建伺服机构驱动力矩测量系统;在精密装调过程中,通过监测驱动力矩,调整装调参数,达到减小干扰力矩的作用。对质量不平衡力矩及活动线缆力矩在驱动力矩中的特性进行实验验证,确定了伺服机构配平和布线方法;对轴承预紧力与伺服机构摩擦力矩关系进行实验验证,解决了自动跑合工艺问题,这对减小摩擦力矩波动幅值具有重要意义;测量伺服机构转轴回转误,明确最佳轴承预紧力的工艺方法。结果表明,所提方法对传统的伺服机构装配工艺进行优化,可将依赖技师经验装配的定性方法优化为依赖力矩测量的定性方法。

In order to reduce the disturbance torque during the assembly of the seeker5s servomechanism,a drive torque measurement system of servo-mechanism was built on the basis of electrical measurement.In the process of precise assembly and adjustment,the drive torque was measured in real time and the assembly parameters were adjusted to reduce the disturbance torque.The characteristics of the mass unbalance torque and the moving cable torque in the driving torque were experimentally verified,and the balancing and routing methods were determined.The relationship between the preload of the bearing and the friction torque of the servo mechanism was also experimentally verified.It is of great significance to solve the problem of automatic running process to reduce the fluctuation amplitude of the friction torque.The method of measuring the rotation error of the rotating shaft is determined,which can be used for determining optimum preload of bearing.Results show that the traditional assembly process of servo mechanism is optimized,and the qualitative method based on the experience of technician's experience is optimized as a quantitative method.