參數(shù)資料
型號(hào)： MCZ33991EG
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： Gauge Driver Integrated Circuit
中文描述： 儀表驅(qū)動(dòng)集成電路
文件頁(yè)數(shù)： 21/36頁(yè)
文件大小： 481K
代理商： MCZ33991EG
Analog Integrated Circuit Device Data
Freescale Semiconductor
21
33991
TIMING DESCRIPTIONS AND DIAGRAMS
DEVICE FUNCTIONAL DESCRIPTION
The motor is stepped by providing index commands at
intervals. The time between steps defines the motor velocity,
and the changing time defines the motor acceleration.
The state machine uses a table defining the allowed time
steps, including the maximum velocity. A useful side effect of
the table is, it also allows the direct determination of the
position the velocity should reduce to allow the motor to stop
at the desired position.
The motor equations of motion are generated as follows:
The units of position are steps, and velocity and
acceleration are in steps/second, and steps/second2
From an initial position of 0, with an initial velocity
u
, the
motor position,
s
at a time
t
is
For unit steps, the time between steps is:
This defines the time increment between steps when the
motor is initially travelling at a velocity
μ
. In the ROM, this time
is quantized to multiples of the system clock by rounding
upwards, ensuring acceleration never exceeds the allowed
value. The actual velocity and acceleration is calculated from
the time step actually used.
Using
and
and solving for
v
in terms of
u
,
s
and
t
gives:
The correct value of
t
to use in this equation is the
quantized value obtained above.
From these equations, a set of recursive equations can be
generated to give the allowed time step between motor
indexes when the motor is accelerating from a stop to its
maximum velocity.
Starting from a position
p
of 0, and a velocity
v
of 0, these
equations define the time interval between steps at each
position. To drive the motor at maximum performance, index
commands are given to the motor at these intervals. A table
is generated giving the time step
t
at an index position
n
.
,
where
indicates
rounding up.
20
300
-0.866
-
222
DE
0.5
+
128
80
21
315
-0.707
-
181
B5
0.707
+
181
B5
22
330
-0.5
-
128
80
0.866
+
222
DE
23
345
-0.259
-
66
42
0.966
+
247
F7
Notes * Denotes Normalized Values.
Table 16. Coil Step Value
2
2
1
at
ut
s
+
=
a
a
u
u
t
2
2
+
+
=
as
u
v
2
2
2
+
=
at
u
v
+
=
u
t
v
=
2
0
0
0
0
2
=
a
=
v
+
p
+
=
a
v
v
t
n
n
n
2
1
1
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參數(shù)描述
MCZ33991EGR2 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 GAUGE DRIVER IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類(lèi)型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
MCZ33993EW 功能描述:接口 - 專(zhuān)用 MSDI RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
MCZ33993EWR2 功能描述:接口 - 專(zhuān)用 MSDI RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
MCZ33996CEK 制造商:Freescale Semiconductor 功能描述:16 LOW SIDE SW - Bulk
MCZ33996CEKR2 制造商:Freescale Semiconductor 功能描述:16 LOW SIDE SW - Tape and Reel
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