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參數(shù)資料
| 型號(hào)： | DRM020 |
| 英文描述： | 3-Phase AC Induction Motor Drive with Tachogenerator Using MC68HD908MR32 |
| 中文描述： | 三相交流感應(yīng)電機(jī)驅(qū)動(dòng)器，帶測速發(fā)電機(jī)使用MC68HD908MR32 |
| 文件頁數(shù)： | 36/66頁 |
| 文件大?。?/td> | 1157K |
| 代理商： | DRM020 |
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Software Design
Designer Reference Manual
DRM020 — Rev 0
36
Software Design
MOTOROLA
4.3.2 Acceleration/Deceleration Ramp
The process calculates the new actual speed command based on the
required speed according to the acceleration / deceleration ramp.
During deceleration the motor can work as a generator. In the generator
state, the DC-Bus capacitor is charged and its voltage can easily exceed
its maximal limit. Therefore the DC-Bus voltage is measured and
compared with the limit. In case of deceleration over-voltage, the
deceleration is interrupted and the motor runs with constant speed in
order to discharge the capacitor. Then, the deceleration can continue.
4.3.3 Speed Sensor
The speed sensor process utilizes the IC function. It reads the time
between the following rising edges of the speed sensor output and
calculates the actual motor speed,
V_tacho
. Also, a software filter of the
speed measurement can be incorporated in the process for better noise
immunity. In this case the actual motor speed is calculated as average
value of several measurements.
4.3.4 PI Controller
The speed closed loop control is characterized by a measurement of the
actual motor speed. This information is compared with the reference set
point and the error signal is generated. The magnitude and polarity of the
error signal corresponds to the difference between actual and required
speed. Based on the speed error, the PI controller generates the
corrected motor frequency in order to compensate the error. The general
principle of the speed PI control loop is illustrated in
Figure 4-3
.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DRM10 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) BCD 10 POS RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點(diǎn)形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
| DRM1004 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) ROTARY DIP SWITCH PLASTICSHAFT RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點(diǎn)形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole |
| DRM101 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Blood Pressure Monitor Using the Flexis QE128 Family |
| DRM10C | 功能描述:SWITCH DIP MINI SHAFT 10POS T/H RoHS:否 類別:開關(guān) >> DIP 系列:DR 特色產(chǎn)品:RDM Series Rotary DIP Switch 標(biāo)準(zhǔn)包裝:70 系列:RDM 電路:十六進(jìn)制 位置數(shù):16 觸點(diǎn)額定電壓:0.1A @ 42VDC 觸動(dòng)器類型:用于工具旋轉(zhuǎn) 觸動(dòng)器電平:凹槽式 安裝類型:通孔 方向:頂部觸動(dòng) 可清洗:是 其它名稱:EG4977-5RDMAR16PIT |
| DRM10C04 | 功能描述:編碼式波段開關(guān) SW DIP MINI SHAFT 10POS T/H RoHS:否 制造商:C&K Components 位置數(shù)量:10 輸出代碼:Binary Coded Decimal 執(zhí)行器:Screwdriver 觸點(diǎn)額定值: 端接類型:Solder Pin 封裝:Tube |
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