自适应控制

In this paper, based on MPEG 2 Test Model 5 (TM5) bit rate control algorithm, there are some improvements proposed:① an intelligent integral action is proposed for improving the control precision of bit rate;② after using DCT AC coefficients to define the measure of macroblock and picture coding difficulty, an improvement on target bits allocation is proposed for the decoded picture quality and conformance including scene change, which can adjust the target bits allocation adaptively by their measure.

针对MPEG－2测试模型5（TM5）比特速率控制算法进行了以下改进：①引入一种智能积分作用，有利于提高比特速率的控制精度；②采用DCT交流系数定义宏块和图象的编码难度测度，然后提出了改进的目标编码量分配策略，即根据编码难度测度自适应调整图象和宏块的目标编码量，有利于提高包括场景变化在内的图象解码质量及其一致性。

After a brief review about the problems of bit rate control for MPEG video coding, two optimizations are proposed based on MPEG-2 Test Model 5 (TM5) algorithm:①An intelligent integral action is introduced for improving the control precision of bit rate;②After using DCT AC coefficients to define the measure of macroblock and picture coding difficulty, an improvement on target bits allocation is proposed for the decoded picture quality and conformance including scene change, which can ajust the target bits allocation adaptively by their measure.

文中首先对MPEG视频编码比特速率的控制问题作了简要回顾，然后针对MPEG-2测试模型5(TM5)算法进行了以下优化：①引入一种智能积分作用，有利于提高比特速率的控制精度；②采用DCT交流系数定义宏块和图象的编码难度测度，然后提出了优化的目标编码量分配策略，即根据编码难度测度自适应调整图象和宏块的目标编码量，这样有利于提高包括场景变化在内的图象解码质量及其一致性。

It does not rely on the precise mathematic model and has the ability of adaption and auto-study.

神经网络控制不依赖于精确的数学模型，具有自适应和自学习的能力。

The simulations show the good tracking effect of the designed adaptive controller, and the used data for determining the control action are in the range of the admissible control.

仿真结果表明，所设计的自适应控制器具有良好的跟踪性能，而且控制量在允许控制的范围之内。

The adapted-self tune-up for PID control was completed through learning-self of neural network.

通过神经网络的自学习、实现PID控制参数的自适应调整。

In order to strengthen the selfadaptation ability of this controller and easy to be applied into practical processes, a simple and effective self-learning algorithm is provided, and its convergence property is analyzed for guarantying the stability of the close loop system.

为了增强控制器的自适应调整能力且便于工程应用，还提出了一种简便有效的自学习算法，并为了保证整个闭环控制系统的稳定性对学习算法的收敛性进行了分析。

In order to adapt to the dynamic change in the enviro ment of manufacturing system ,this paper gives an enterprise integration meth od which syncretizes the distributed control and multi-agent technique.

为适应制造系统中环境的动态变化，提出一种结合分布式控制和多代理人技术的企业集成方法，通过各级代理人之间的协商来解决制造系统的扩展性与自适应问题，给出了基于定单的多代理人协同方案，探讨了代理人技术在制造系统中的应用。

This paper proposes an self-adaptive speed-accommodating control circuit,which can get the speed-error,and can test the change of frequency of feedback signals of the single phase ac tacho generator through self comparing and automatically corrects the speed.

文章介绍了通过自比较来检测录音机主导轴单相永磁交流测速发电机反馈信号的频率变化，从而获得速度误差，并自动校正转速的一种自适应速度调节控制电路。

Through studying the coupling effect of press-sensing response and thermal-electric performance, we developed the experimental and theoretic methods to supervise the temperature of concrete road surface online, and proposed a low energy-concuming snow-melting and deicing intellective control scheme. Therefore, the complete method for temperature self-diagnosis and snow-melting and deicing self-adapting control was developed.

通过研究压敏感应和热电功能之间的耦合效应，建立了进行混凝土路面温度在线监测的实验与理论方法，提出了一种低能耗的融雪化冰的智能控制方案，建立了一种CFRC混凝土材料在路面结构的优化铺设条件下温度自诊断与融雪化冰自适应实验与方法。

Specifically, the cutting edge active safety technologies featured on the all-new Mazda 3 include ABS, Electronic Brake Force Distribution, Dynamic Stability Control and Emergency Stop Signaling system as standard equipments, and bi-xenon headlights with a pivoting adaptive front lighting system.

具体来说，先进的主动安全上全新的马自达3特色技术包括ABS，电子制动力分配系统，动态稳定控制系统和紧急停车信号系统作为标准设备，双氙气大灯与枢轴自适应前灯系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。