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3D-GISbook
三维GIS的一些资料 包括电子书籍(Some three-dimensional GIS information including e-books)
- 2009-01-10 09:56:12下载
- 积分:1
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DITONGLBOQI
在 惯 性 导 航 系 统 里 往 往 需 要 对 陀 螺 仪 和 加
速 度计进 行 性 能测 试
,
这 时就 要设 计一 种 测 试 它
们 的 滤 波器
。
滤 波器 从 功 能 上 可 分 为 四种 低通
、
高通
、
带 通
、
带 阻 滤 波 器
。
文 中所 要 研 究 的低 通 滤 波器 是 通 过 低 频 信号 而
抑 止 高频 信号 的滤 波器
,
巴 特 沃 思 滤 波器 是 最 简
单 的低通 滤波 器
。
其 中
、
为 实 常 数
, ,
。
一
, ,
二
,
分
母 多项 式的幂 次 即 为滤波器 的 阶数
。
若 式
除
“ 。
外 所 有 分 子 项 系数 均 为零
,
则传递 函数
变 成 一 常数 与 多项 式 之 比
。
这 时传递 函数有 有 限
极 点 而 无 有 限零 点
,
这 种 滤 波 器称 为 全极 点 滤 波
器
,
阶 巴 特 沃斯 滤 波 器 也 是 全极 点 滤 波 器
。
全
极 点 滤 波器 传递 函 数 为
矛
,
,
厂 十
。 , ”一 ’
竺(n the inertial navigation system and processing is often necessary for gyroscope
Speed meter performance test conducted
,
This is when you want to design one kind of test it
Our filter
.
Filter from the functions can be divided into four low-pass
,
Qualcomm
,
Bandpass
,
Bandstop filter
.
The text to be studied in a low-pass filter is a low-frequency signal by
For the high-frequency signal suppression filter
,
Bart Waugh think is the most simple filters
The single low-pass filter
.
Which
,
Is a real constant
,,
.
A
,,
Two
,
Minute
Mother is a power of the polynomial order of the filter
.
If the formula
Except
. "
Have a child outside the sub-zero coefficients are
,
Then the transfer function
Turned into a constant ratio with polynomial
.
At this time there is limited transfer function
No pole while Zero Limited
,
This kind of filter is referred to as full-pole filter
Implement
,
Order Butterworth filter is all-pole filter
.
W)
- 2013-10-25 10:47:37下载
- 积分:1
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PQ12154
PQ分解法,有些还需要改进,该程序所对应的例子是东南大学陈珩编的《电力系统稳态分析(第二版)》的例4-5(PQ decomposition, some also needs to be improved, The procedure corresponding to the example of Southeast University, Chen Heng addendum to the "steady-state power system analysis (second edition)" 4-5 cases)
- 2020-07-03 08:20:02下载
- 积分:1
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informatization
一个企业管理系统,包括增删查改,文件上传与下载,值日人员管理等(An enterprise management system, including add, delete, check and modify, file upload and download, on-duty personnel management, etc)
- 2019-05-07 11:04:46下载
- 积分:1
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ConsoleApplication3
实现联系人的增删改查,联系人上限为10人。适用于课程设计,(To achieve contacts and additions and deletions, it is suitable for curriculum design.)
- 2018-04-28 22:18:11下载
- 积分:1
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实验3
1、单向通信
向甲方连续不断地发送变量a的值,未按键,a=0x0f,按键后根据按键确定a值;并将a的值取反从P0口输出,控制D0、D1、D2、D3相应点亮。乙方接收到数据并偶校验正确后,将接收数据取反从P0口输出,控制D0、D1、D2、D3相应点亮。
2、双向通信
甲方连续不断地发送变量a的值,未按键,a=0x0f,按键后根据按键确定a值;乙方未按键不发送,按键后将乙方按键得到的a*16发送;甲乙双方都将发送数据与接收数据相或后再取反,从P0口输出控制D0—D7相应点亮。
3、间隔发送
未按键,甲方不发送数据,按键后甲方每隔50ms连续发送4个字节:0xff、a、a、a。
乙方只在收到甲方数据0xff后的3个数据并验证相同时,才将接收数据*16发送。
甲乙双方都将发送数据与接收数据相或后,从P0口输出控制D0—D7相应点亮。(1. One-way communication
The value of variable a is continuously sent to Party A without key, a = 0x0f. After the key is pressed, the value of a is determined according to the key; and the value of a is output from P0 port to control the corresponding lighting of D0, D1, D2 and D3. After receiving the data and checking it correctly, Party B will output the received data from P0 port and control D0, D1, D2 and D3 to light up accordingly.
2. Two-way communication
Party A continuously sends the value of variable a without key, a = 0x0f, and determines a value according to the key after the key; Party B does not send the key without key, and sends the a*16 obtained by the key after the key is pressed; Both parties will send the data to or from the receiving data, and then retrieve the data and control D0-D7 from the P0 port to light up accordingly.
3. Interval Sending
Without keys, Party A does not send data. After keys, Party A sends 4 bytes continuously every 50 ms: 0xff, a, a.)
- 2020-11-16 09:29:42下载
- 积分:1
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type_4_wind_turbine_model
说明: 海上风电平均值模型,,包括永磁同步电机、变桨、变换器控制等,很详细,直接用(Offshore wind power average model, including permanent magnet synchronous motor, pitch, converter control, etc., very detailed, directly used)
- 2020-04-07 23:43:31下载
- 积分:1
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通过分析程序开发
Embedded vc++下开发的路经分析程序-developed under the passing analysis program
- 2022-08-04 08:13:04下载
- 积分:1
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一个用VC写的俄罗斯方块程序源码,用了就知道了,要凑20个字真不容易...
一个用VC写的俄罗斯方块程序源码,用了就知道了,要凑20个字真不容易-a VC written procedures source of Rubik"s cube, with the know, we should take care of 20 characters was not easy
- 2023-01-31 21:55:03下载
- 积分:1
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一个模拟钢琴的源程序
一个模拟钢琴的源程序- Simulates the piano the source program
- 2023-04-17 07:20:02下载
- 积分:1