參數(shù)資料
型號(hào)： 55VDMOSFULL-BRIDGEMOTORDRIVER
英文描述： (647.67 k)
中文描述： （647.67十一）
文件頁(yè)數(shù)： 15/18頁(yè)
文件大小： 647K
代理商： 55VDMOSFULL-BRIDGEMOTORDRIVER
The Typical Application
(Continued)
QUARTER STEP DRIVE WITH TORQUE
COMPENSATION
Figure 13 shows the winding currents and lookup table for a
quarter step drive (four microsteps per full step) with torque
compensation.
DS011878-26
Top Trace: Phase A Winding Current at 1A/div
Bottom Trace: Phase B Winding Current at 1A/div
Horizontal: 2ms/div
*250 steps/second
90 ELECTRICAL/FULL STEP
÷
4 MICROSTEPS/FULL STEP = 22.5 ELECTRICAL/MICROSTEP
α
0
|cos(
α
)|
1
0.924
0.707
0.383
0
0.383
0.707
0.924
1
0.924
0.707
0.383
0
0.383
0.707
0.924
D A
15
14
11
6
0
6
11
14
15
14
11
6
0
6
11
14
DIRECTION A
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
|sin(
α
)|
0
0.383
0.707
0.924
1
0.924
0.707
0.383
0
0.383
0.707
0.924
1
0.924
0.707
0.383
D B
0
6
11
14
15
14
11
6
0
6
11
14
15
14
11
6
DIRECTION B
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
22.5
45
67.5
90
112.5
135
157.5
180
202.5
225
247.5
270
292.5
315
337.5
REPEAT
|
FORWARD
↓
↑
REVERSE
|
BRAKE A = BRAKE B = 0
FIGURE 13. Winding Currents and Lookup Table for Quarter Step Drive with Torque Compensation
15
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