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参数资料
| 型号： | MLX90804SA-X |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Speed regulator for universal motors |
| 中文描述： | 调速电机的普及 |
| 文件页数： | 7/12页 |
| 文件大小： | 147K |
| 代理商： | MLX90804SA-X |
MLX902xx Name of Sensor Rev Y.X 22/Aug/98 Page 7
MLX90804 Speed regulator for universal motors Page 7 Rev 1.0 30/Jun/00
MLX90804
Speed regulator for universal motors
regulator is kept at zero. If PX[3] = 0, the Kp factor is
fixed all the time. If PX[3] = 1, the Kp factor changes
at the moment the measured speed gets higher than
FOSC/MULT
N
DIV [MULT]
UPCOUNTER
LATCH
DIV [N]
FOSC
M
FOSC/MULT
FOUT
F
CE
N = (FOSC/MULT)/FREF
FOUT = FOSC/N = FREF*MULT
CONTROL
MULT
FREF
input frequency
multiplier
the start speed, which is defined by SPE[1:0]. At
the same moment the SETP integrator (see PI
regulator) is enabled and preloaded with the value
of the measured speed.
PI regulator
The PI regulator calculates the ignition point that
corresponds to a selected speed. The signal SETP
is driven from the sets of speeds in the ROM table.
The signal REAL is driven from the frequency
meter and corresponds to the real speed.
The error signal ERR at sample time n is the
difference between the measured speed and the
desired speed for this sample time. The error is
multiplied by the proportional coefficient to form the
proportional part ERRP. The same error is
multiplied by the integral coefficient and summed
with the previous errors. The accumulated integral
error ERRI is then added to the proportional to
form the final product ERRPI. This product is
subtracted from the fixed MIN_ANGLE to form the
triac ignition point (the new estimated firing angle)
The coefficients are mask programmable: Kp is
defined by PX[3:1] and Ki is defined by SSE[1:0].
For smooth operation and to avoid overshoots, the
setpoint (desired speed) is ramped from its present
value to the a desired value:
SFT1
SFT0
Duration in half
periods
0
0
0
0
1
7
1
0
15
1
1
31
PX3
PX2
PX1
Kp
0
0
0
8
0
0
1
4
0
1
0
2
0
1
1
1
1
0
0
1 -> 4
1
0
1
2 -> 4
1
1
0
1 -> 2
1
1
1
4 -> 8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MLX90805 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Intelligent Triac Controller |
| MLX90805S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Intelligent Triac Controller |
| MLX90805SA-X | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Intelligent Triac Controller |
| MLX90805SL-X | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Intelligent Triac Controller |
| MLX90807 | 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:Relative Integrated Pressure Sensor |
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