ID |
原文 |
译文 |
14015 |
然后详细阐述了飞行器虚拟飞行软件控制系统进程间通信和试验流程的设计,通过共享内存和事件体实现进程间数据交互和同步的目的。 |
Secondly the design of Inter-Process Communication ( IPC) and test flow of the software system for aerocraft’s virtual flight is described in detail and inter-process data interaction and synchronization is realized by using the shared memory and the event. |
14016 |
最后给出测试结果与分析。 |
Finally the test results and analysis are given. |
14017 |
结果表明, 在 4 ms 定时周期内系统能够实时采集陀螺仪、编码器和天平等传感器数据,控制飞行器的虚拟飞行试验时序,验证了系统设计方案的可行性。 |
The results show that the sensor data from the gyroscope the encoder and the balance can be collected in real time and the time sequence of the virtual flight test of the aerocraft can be controlled correctly during the 4 ms period proving the feasibility of the design. |
14018 |
摄像机标定在机器视觉技术中具有重要意义。 |
Camera calibration is very important in machine vision technology. |
14019 |
针对传统三维物标定方法操作繁琐,BP 神经网络标定受初始权值和阈值影响的问题,提出一种基于光轴会聚模型的思维进化 - 神经网络标定方法。 |
In view of the cumbersome operation of the traditional 3D object calibration method and the influence of the initial weight and threshold value on the BP neural network calibration this paper proposes a mind evolution neural network calibration method based on the optical axis convergence model. |
14020 |
利用 BP 神经网络可逼近非线性函数,思维进化算法具有较强全局寻优能力,有效解决了 BP 神经网络易陷入局部最小以及初始权值、阈值随机化问题。 |
The BP neural network algorithm can approach nonlinear function and mind evolution algorithm has strong global optimization ability. Therefore the problems of BP neural network such as easily falling into local minimum and randomization of initial weight and threshold can be effectively solved. |
14021 |
实验证明,与经典张正友标定法、BP 神经网络方法相比,改进进化神经网络标定法可获得更好的双目标定精度。 |
Experiments show that compared with the classical Zhang Zhengyou calibration method and BP neural network method,the mind evolution neural network calibration method can achieve better accuracy of binocular calibration. |
14022 |
纳米级精度微位移驱动与控制通常使用压电陶瓷驱动器驱动柔性机构来实现。 |
Micro-displacement driving and control with nano-scale precision are usually achieved by using the piezoelectric ceramic driver to drive the flexible mechanism. |
14023 |
但是压电陶瓷驱动器行程较小,需要使用柔性放大机构对其位移进行放大,并且压电陶瓷驱动器存在蠕变和迟滞等非线性特性,而这些非线性特性极大影响了其输出位移经放大机构放大后的运动精度。 |
However the travel distance of the piezoelectric ceramic driver is so small that a flexible amplification mechanism is needed to amplify its displacement. The nonlinear characteristics of the piezoelectric ceramic driver such as creeping and hysteresis greatly affect the motion accuracy of the output displacement after being amplified by the amplification mechanism. |
14024 |
针对以上两点,将传统桥式机构的 4 条桥臂用 Scott-Russell机构代替,设计了一种新型柔性放大机构。 |
To solve the above two problems a new type of flexible amplification mechanism is designed by replacing the four bridge arms of the traditional bridge mechanism with the Scott-Russell mechanism. |