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This paper presents a general valve control valve controller design program The...
本文介绍了一种控制普通阀门的阀门控制器的设计方案,该阀门控制器带有工业现场总线PROFIBUS-DP 的接口,可以实现阀门的远程控制和网络控制。本文主要的着力点为介绍利用PROFIBUS-DP 专用芯片SPC3 开发PROFIBUS-DP 设备中需要注意的一些问题,包括硬件接口设计,有关PROFIBUS-DP 规范标准的一些设计要点,以及利用PROFIBUS-DP 诊断功能的方法。本文对设计其它Profibus DP从站节点有很好的参考价值!-This paper presents a general valve control valve controller design program The valve controller with industrial PROFIBUS-DP interface. The valve can be achieved remote control and network control. This paper mainly focus on the use of PROFIBUS-DP SPC3 ASIC development PROFIB U.S.-DP equipment necessary to pay attention to a number of issues, including the hardware interface design, The PROFIBUS-DP standards in a number of design features, and the use PROFIBUS-DP diagnostic function method. In this paper, the design of other Profibus DP slave nodes are of value!
- 2023-06-03 14:10:03下载
- 积分:1
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Pretvarac napona sa 12 na 220 volti 100w
Pretvarac napona sa 12 na 220 volti 100w
- 2022-01-26 04:31:53下载
- 积分:1
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是一个单一的P89LPC938
The P89LPC938 is a single-chip microcontroller, available in low cost packages, based on
a high performance processor architecture that executes instructions in two to four clocks,
six times the rate of standard 80C51 devices. Many system-level functions have been
incorporated into the P89LPC938 in order to reduce component count, board space, and
system cost.
- 2022-07-13 08:11:06下载
- 积分:1
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工资管理系统代码。利用面向对象的方法以及C++的编程思想来完成系统的设计。...
工资管理系统代码。利用面向对象的方法以及C++的编程思想来完成系统的设计。-Salary Management System code. The use of object-oriented methods and C++ Programming ideas to complete the system design.
- 2022-04-11 17:32:46下载
- 积分:1
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This is surprisingly few articles about the SINS initial alignment of journal ar...
这是几篇有关捷联惯导初始对准的期刊论文,有粒子滤波和自适应滤波,内容丰富-This is surprisingly few articles about the SINS initial alignment of journal articles, with particle filter and adaptive filtering, content-rich
- 2022-01-29 00:05:36下载
- 积分:1
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在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入...
在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入输出点数并不多, 通常在60点以下,因此, 为了降低数控机床成本, 在基于工业PC机的数控系统中, 可以采用开关量I/O板加外接继电器,配合主机的软件对机床开关进行控制。但如果PC机采用单任务操作系统(如DOS) , 数控系统的所有任务运行都置于一个总体的消息循环中, 软件的模块化和可维护性较差, 系统故障的风险相对集中, 而且不能充分利用PC机系统资源。而采用非实时多任务操作系统(如Windows) 时, Win32 API的设计没有考虑到实时环境的开发用途, 其系统调用的效率不高,不能满足数控系统PLC控制的实时性要求。
为此, 本文提出一种基于RT - Linux操作系统的嵌入式PLC, 利用RT - Linux的开放性、模块化和可扩展性的系统结构特性和多线程/多任务的系统环境,在保证实时性的同时, 使故障风险相对分散。
-use linux to design plc
- 2022-02-03 18:12:02下载
- 积分:1
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本文从信号量、管程和消息传递三个方面讨论了进程间的同步问题,并分别给出了关于生产者/消费者问题的解决算法,最终还分析了以上三种方法的优缺点。...
本文从信号量、管程和消息传递三个方面讨论了进程间的同步问题,并分别给出了关于生产者/消费者问题的解决算法,最终还分析了以上三种方法的优缺点。-signal from the amount of paper tube and messaging three discussed the process of synchronization and were given on the producer/consumer problem solving algorithm, ultimately analysis of the above three methods are discussed.
- 2022-03-26 07:42:04下载
- 积分:1
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可以模拟雷达工作状态,有针对性的练习,让用户熟悉的Wi-Fi…
能模拟雷达的工作状态,有针对性的进行练习,使使用者尽快熟悉雷达工作的原理过程-Can simulate the radar job status, targeted exercises, so that users familiar with the radar as soon as possible the principles of the process of job
- 2022-03-06 03:08:29下载
- 积分:1
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SM5004, is entirely possible to replace a MCX314 of FPAG chips!
SM5004,完全可以取代mcx314的一款FPAG芯片!-SM5004, is entirely possible to replace a MCX314 of FPAG chips!
- 2022-10-27 23:05:04下载
- 积分:1
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C64X
C64X-DSP-EDMA小结及实例详解-C64X-DSP-EDMA and Example Detailed Summary
- 2022-01-26 01:06:42下载
- 积分:1