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參數(shù)資料
| 型號(hào)： | HEDS-9781H50 |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | SINGLE, 2 CHANNELS, ROTARY/LINEAR OPTICAL POSITION ENCODER |
| 封裝： | PLASTIC PACKAGE-4 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 245K |
| 代理商： | HEDS-9781H50 |
3
Phase (
φ): The number of electrical
degrees between the center of the
high state of channel A and the
center of the high state of channel
B. This value is nominally 90
°e for
quadrature output.
Phase Error (
φ): The deviation of
the phase from its ideal value of
90
°e.
Direction of Rotation: When the
codewheel rotates counterclock-
wise, as viewed looking down on
the module (so the marking is
visible), channel A will lead
channel B. If the codewheel rotates
in the opposite direction, channel
B will lead channel A.
Optical Radius (Rop): The distance
from the codewheel’s center of
rotation to the optical center
(O.C.) of the encoder module.
Angular Misalignment Error (E
A):
angular misalignment of the sensor
in relation to the tangential
direction. This applies for both
rotary and linear motion.
Mounting Position (R
M): Distance
from Motor Shaft center of rotation
to center of Alignment Tab
receiving hole.
Output Waveforms
Definitions
Count (N) = The number of bar
and window pairs or counts per
revolution (CPR) of the
codewheel, or the number of lines
per inch of the codestrip (LPI).
1 Shaft Rotation = 360
mechanical
degrees
= N cycles
1 cycle (c) = 360 electrical
degrees (
°e)
= 1 bar and
window pair
Pulse Width (P): The number of
electrical degrees that an output
is high during one cycle. This
value is nominally 180
°e or 1/2
cycle.
Pulse Width Error (
P): The
deviation, in electrical degrees, of
the pulse width from its ideal
value of 180
°e.
State Width (S): The number of
electrical degrees between a
transition in the output of channel
A and the neighboring transition
in the output of channel B. There
are 4 states per cycle, each
nominally 90
°e.
State Width Error (
S): The
deviation, in electrical degrees, of
each state width from its ideal
value of 90
°e.
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