偏心测量系统驱动机构的改进设计

Improvement Design for Driving Mechanism of TestEquipment Centroidal Deviation

摘要:

偏心距是弹箭飞行稳定性的重要影响因素,其精确测量是保证弹道计算正确性的关键；为了解决某些特殊外形的弹体,在利用偏心测量系统测量偏心时,驱动弹体精确转动的机构出现卡滞、打滑等现象,导致无法自动测量的问题；根据系统偏心距测量的原理和试验操作步骤,分析了测量过程设备存在的不足及产生原因,提出了改进支撑和用减速伺服电机增加旋转力矩的方案,并进行了详细地设计及计算；验证结果表明,改进后的系统可以有效解决电机直驱不规则弹体时出现的问题,测量精度提高了4.15倍；扩大了测量范围,提高了驱动精度和测量效率,具有很好的应用价值。

Abstract:

Centroidal deviation is an important factor for projectile flight stability, and it is the key for accurate measurement to calculate ballistic trajectory. In order to solve fault about an equipment used to automatically measure centroidal deviation when it is used to test special shape of the projectile. Its accurate driving mechanism has some problems such as clamping stagnation and skid and etc. so. In the paper, according to its measurement principle and test procedures, the equipment deficiencies are analyzed, and the solutions such as improving supporting method and increasing the rotary torque with the deceleration servo motor are put forward, design and calculation are introduced in detailed. The test result shows that the improved mechanism can directly drive irregular projectile with motor, and the measurement accuracy can be improved about 4.15 times. Its measurement range is broaden and its measurement precision and efficiency are improved, so it has good application value.