參數(shù)資料
型號(hào): AN2528D
廠商: 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述: Standard Space Vector Modulation TPU Function Set (svmStd)
中文描述: 空間矢量調(diào)制標(biāo)準(zhǔn)聚氨酯函數(shù)集(svmStd)
文件頁(yè)數(shù): 20/28頁(yè)
文件大?。?/td> 514K
代理商: AN2528D
AN2528/D
20
Standard Space Vector Modulation TPU Function Set (svmStd)
For More Information On This Product,
Go to: www.freescale.com
Figure 11. svmStd_sync state diagram
Resolver Reference
Signal for Standard
Space Vector
Modulation
(svmStd_res)
The svmStd_res TPU function uses information read from the svmStd PWM
functions, the actual PWM center times and the PWM periods. This allows a
signal to be generated, which tracks the changes of the PWM period and is
always synchronized with the PWM. The resolver reference signal is a 50%
duty-cycle signal with a period equal to
prescaler
or synchronization channel
presc_copy
PWM periods (see next paragraph). The low to high transition of
the pulse can be adjusted by a parameter, either negative or positive, to go a
number of TCR1 TPU cycles before or after the PWM period center time.
Figure 12. Resolver reference signal adjustment examples
S1
S2
S3
INIT
HSR = 10
center_time
T
center_time
T
center_time
T
|move|
move < 0
prescaler = 2
center_time
T
center_time
T
|move|
m
ove > 0
p
rescaler = 1
F
Freescale Semiconductor, Inc.
n
.
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