tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 151
tmp88fw45afg
Manufacturer Part Number
tmp88fw45afg
Description
8 Bit Microcontroller Tlcs-870/x Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP88FW45AFG.pdf
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accomplished by counting degrees of electrical angle and calculating the sine wave data and voltage data at the counted
degree of electrical angle.
Also, sine wave control requires controlling the PWM duty cycle for each pulse. Control of PWM duty cycles is
Figure 14-2 Example of Sensorless DC Motor Control Timing Chart
Position
detection
Commutation
Position
detection start
Failure
determination
Six-phase
U phase
V phase
X phase
Y phase
Z phase
Induced
voltage
Internal
output
signal
Mode
CU
phase
Error handling,
Speed control
Figure 14-1 Conceptual Diagram of DC Motor Control
etc.
H
L
30
60
45
0
120
P D circuit
Three-phase PW
Protective control
Position detection
Electrical angle timer
Waveform calculation
crossing
1
Zero
U phase
Page 137
2
U, V, W, X, Y, Z
PDU, PDV, PDW
CL, E G
3
V phase
4
Power drive
Upper phase: u, v, w
Lower phase: x, y, z
DC motor
5
DC current
phase
TMP88FW45AFG
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