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介绍了一种使用RTX嵌入式系统的激光目标模拟系统。该系统采用通过控制激光光斑来模拟导弹从发射到击中目标的过程,从而完成对导引头的测试工作。该系统由上位机、光斑能量调节和光斑大小调节三部分组成。整个系统通过上位机的RTX嵌入式系统,同时发送控制指令给两个单元的控制器,实现激光光斑能量和大小的连续、快速调节。光斑大小调节单元:通过控制器控制丝杠的运动,进而控制镜片的移动。控制丝杠进行运动的电机是直流力矩电机。光斑能量调节单元:根据朗伯定律,在结构上采用两个楔角完全相同的晶体,控制电机改变晶体做相对运动,从而改变光路中晶体的厚度,实现对光斑能量的调节。该系统利用RTX嵌入式系统实时发送控制指令,开辟共享内存区用于Windows与RTX的实时数据交换。通过采用RTX嵌入式系统,大幅度提高整个系统的实时性能,系统反应时间缩短到1 ms。从而达到导引头测试时需要激光目标实现快速变化的要求。
A laser target simulation system using RTX embedded system is introduced. The system uses the control of the laser spot to simulate the missile from the launch to the target of the process, thus completing the seeker test. The system consists of upper computer, spot energy adjustment and spot size adjustment of three parts. The entire system through the host computer’s RTX embedded system, while sending control instructions to the two-unit controller, to achieve the laser spot energy and size of the continuous and rapid adjustment. Spot size adjustment unit: through the controller to control the movement of the screw, and then control the movement of the lens. The motor that controls the movement of the lead screw is a DC torque motor. Spot energy adjustment unit: According to Lambert’s law, two crystals with the same wedge angle are used in the structure to control the motor to change the relative motion of the crystal to change the thickness of the crystal in the optical path so as to adjust the energy of the spot. The system uses RTX embedded system to send real-time control commands and open up a shared memory area for real-time data exchange between Windows and RTX. By using RTX embedded system, greatly improve the real-time performance of the entire system, the system response time is shortened to 1 ms. In order to achieve the seeker test laser target needs to achieve rapid changes in the requirements.