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參數(shù)資料
| 型號： | 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)動器，帶測速發(fā)電機(jī)使用MC68HD908MR32 |
| 文件頁數(shù)： | 40/66頁 |
| 文件大?。?/td> | 1157K |
| 代理商： | DRM020 |
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Software Design
Designer Reference Manual
DRM020 — Rev 0
40
Software Design
MOTOROLA
The process is accessed regularly in the rate given by the set PWM
frequency and the selected PWM interrupt prescaller (register
PCTL2
).
This process has to be repeated often enough compared to the wave
frequency in order to generate the correct wave shape. Therefore for
16kHz PWM frequency, it is called each fourth PWM pulse and thus the
PWM registers are updated in 4kHz rate (each 250
μ
sec).
4.3.7 Fault Control
This process is responsible for fault handling. The software
accommodates two fault inputs: DC-Bus over-current and DC-Bus
over-voltage.
DC-Bus over-current: In case of over-current, the external hardware
provides a rising edge on the fault input of the microcontroller FAULT2.
This signal disables all motor control PWM’s outputs (PWM1 - PWM6)
and sets general fault flag,
Gf_flag
.
DC-Bus over-voltage: The sensed DC-Bus voltage is compared with the
limit within the software. In case of over-voltage all motor control PWM
outputs are disabled (PCTL1) and the general fault flag,
Gf_flag,
is
set.
If any of the faults occurs, the recovery time for the individual fault is
loaded and till this time expires, the system remains disabled.
4.4 Software Implementation
The processes described above are implemented in a single state
machine, as illustrated in
Figure 4-4
,
Figure 4-5
and
Figure 4-6
.
The general software implementation incorporates the main routine
entered from Reset and three interrupt states. The Main Routine
includes the initialisation of the microcontroller and a Software Timer for
the control algorithm time base. The interrupt states provide calculation
of actual speed of the motor, over-current fault handler and PWM
generation process.
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 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 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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