运载火箭伺服机构负载与空载特性间的转换传递函数

讨论了伺服机构负载特性与无发动机空载特性和有发动机空载特性间的转换关系。首先在理论上建立伺服机构的数学模型，根据工程需要对模型进行简化。在此基础上分析伺服机构负载、空载特性间的转换传递函数。根据实验数据对理论分析进行了验证。结果表明，伺服机构的负载、无发动机空载特性间的传递函数可用一个振荡环节代替；伺服机构负载、有发动机空载特性间的传递函数也可用一个较为复杂的二阶环节来代替。

Transfer Function Between Loaded and Unloaded Servomechanism of Launch Vehicle

Discussed the transfer function between loaded and unloaded servomechanism of launch vehicle.The unloaded servomechanism includes two situationshaving no engine or having engine with no firing.Firing.Firstly built thg model of servomechanism in theory and simplified the model.Then analysised the transfer function between loaded and unloaded servomechanism.Experimental data shows that,while there is no engine,the transfer function between loaded and unloaded servomechanism is an oscillation sector;while there is engine,the transfer function is a second order or third order sector.