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參數(shù)資料
| 型號(hào)： | 5962-0423501KXC |
| 元件分類： | 位置變換器 |
| 英文描述： | SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, CQFP52 |
| 封裝： | 0.956 X 0.956 INCH, 0.100 INCH HEIGHT, HERMETIC SEALED, CERAMIC, QFP-52 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 217K |
| 代理商： | 5962-0423501KXC |
15
SCD5028-1 Rev H 6/21/07
Aeroflex Plainview
ANOMALY #2
PROBLEM DESCRIPTION AND RECOMMENDED ACTION:
This Errata information is to address the constant Integral Nonlinearity (INL) that exists at each angle of the
ACT5028B Resolver to Digital Converter (RDC). This error is repeatable from chip to chip and provides a look up
Table of offsets that must be added to the output of the Resolver to Digital Converter to get the correct angle.
Figure 7 shows the error in Minutes that exists at 2o increments for the full 360o. Note that the INL error from 0o to
180o is basically the same as the error between 180o and 360o. Table II has the angle and correction factor (in Minutes)
that must be added to zero out the INL error.
A simple calculation can be performed to derive a correction factor for angles that fall between the angles listed in
Table II herein.
AL = Larger Angle
AS = Smaller Angle
CL = Correction Factor associated with larger Angle
CS = Correction Factor associated with smaller Angle
NA = New Angle
NCF = New Correction Factor
Formula:
NCF = CS + (((NA - AS) / (AL - AS)) * (CL - CS))
Example:
Require the correction factor @ 15o
NCF = 10.17114258 + (((15 – 14) / (16 – 14)) * (11.11376953 - 10.17114258))
NCF = 10.17114258 + (((1) / (2)) * .94262695)
NCF = 10.17114258 + (.5 * .94262695)
NCF = 10.17114258 + .471313475
NCF = 10.64245606 minutes
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