參數(shù)資料
型號(hào): DRM028
英文描述: Sensorless BLDC Motor Control Using the MC68HC908MR32
中文描述: 傳感器BLDC電機(jī)控制使用MC68HC908MR32
文件頁(yè)數(shù): 46/66頁(yè)
文件大?。?/td> 1157K
代理商: DRM028
Software Design
Designer Reference Manual
DRM020 — Rev 0
46
Software Design
MOTOROLA
4.4.4 PI_CONST Timeout Routine
This routine is accessed from the main software timer in PI_CONST
rate. The rate defines the time constant of the PI controller. The following
sequence is performed (see
Figure 4-6
):
During deceleration, the DC-Bus voltage is checked and in case
of deceleration over-voltage, the deceleration is interrupted until
the capacitor is discharged,
When no deceleration over-voltage is measured, the
acceleration/deceleration speed profile is calculated,
Actual motor speed is calculated,
PI speed controller is performed and the corrected motor
frequency calculated,
The corresponding voltage amplitude is calculated according to
the Volt-per-Hertz ramp. Thus both parameters for PWM
generation are available (
Table_inc, Amplitude
).
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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