The pid parameters is transmitted to field equipments by hart data frames to make the systems work smoothly . high precision sensors , if working temperature varies between great ranges , will be affected badly 由于传感器实际工作环境的温度变化幅度是很大的,对于高精度的传感器,温度误差已成为提高其性能指标的严重障碍。
Major work of mine : based on the theories of structure of the system , accomplishing the designing of the data frame structure of the interface of the soft and hardware , and fulfilling the effective communication of the data 本人在本课题所做的工作:根据系统组成原理,完成设计软硬件接口的数据帧结构,达到数据的有效通信。
In order to realize the conversion and unification of the data in different datum frames , converting parameters through robust estimation is put forward when the precision index of the two different coordinates cannot be obtained 针对在无法获知两个坐标系下公共点成果精度指标的情况下,提出了利用稳健估计理论合理求解转换参数的一种方法。
At the same time , deadline field is introduced into periodic data frames to differentiate their emergency degree , and non - preemptive edf scheduling method is applied to improve the end - to - end delay of periodic data field 同时还在周期性数据帧中引入截止期限字段来区分其不同的紧急程度,并对其采用非中断的edf调度方法来改善周期性数据帧的端到端延迟。
Aiming at the data characteristic of industrial ethernet , periodic real - time data and non - real - time data is discriminated by the introduction of ieee802 . 1q priority field in ethernet data frames , the former is given priority to transfer 摘要针对工业以太网的数据特点,通过在以太网数据帧中引入ieee802 . 1q优先级字段来区分周期性实时数据和非实时数据,并对前者优先进行传送。
The real time server is described first , which emphasizes on some key points such as entry control , the design of data frames and cache control . it shows the effect of data compressing to the progress of multimedia application vigorously 在实时服务器端的解说中,阐述了接入控制、数据帧设计、缓冲控制等技术的关键点,并展示了数据压缩技术的发展对多媒体应用的巨大推动作用。
3 . implementing the serial communication between the cms and lms . putting forward two rules for software flow control and data transmission , as well as implementing the relevant design for command frame , return frame and data frame of them ( 3 )解决了cms与lms之间的串口无线通信问题,提出了一种软件流量控制规程与数据传输规程,并设计了相应的命令帧、回应帧及数据帧的结构。
The main technique of solid state memory system include the techniques of design for reliable and lower power dissipation and valid data sampling , data framing and encoding , data storing and retrieving on high speed , data disturbing and frequency difference processing 星载固存系统设计的主要技术包括可靠性设计、低功耗设计、有效数据采样、数据组帧编码、数据高速存储及回放,数据加扰,输入输出频差兼容设计等技术。
This paper analyzed p - persistent csma / cd protocol and proposed a new adaptive algorithm for the adjustment of the coefficient p by real - time channel traffic sensing based on the feedback control theory , i . e . , changing the value of p dynamically through the analysis of networks " flow to control the behavior of the stations sending data frames in the same collision domain , to keep the media channel in an optimal state and to enhance the channel transmission efficiency 该算法基于对网络流量的分析,在osi物理层通过信道信息量的在线实时检测,根据反馈控制的原理,在数据链路层动态地调整控制输入参数p ,从而控制站点发送分组数据帧的行为,使信道处于最佳的传输状态,提高信道的效率。
Adaptive modulation can also control quality of service according to transmitted information type and greatly increase capacity of system . the data frames in adaptive modulation communication system must be redesigned . because the sender must tell the receiver the current modulation mode by some bits in the data frame and the receiver must gain the current channel condition from the data frame in order to control its modulation mode and symbol rate 因为发送方须通过数据帧中的某些比特来通知接收方当前的调制方式和符号速率;同样,接收方也须从数据帧中某个域的比特流来获得当前的信道条件信息,从而去控制其调制方式及符号速率。