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i started to learn C++. i'm totally newbie :D
i'm using Dev C++ compiler.
i tried to run some simple examples from tutorials, like this:
using namespace std;
void main ()
cout << “Hello, World!\n”;
using namespace std...
i wanna make current sensing circuit for my 24 V bldc motor driver. i wanna use high side current shunt measurements as AN894 mentioned, but still confused about calculating the components value (Rsense, R1 and R2 for the op amp).
this is my power inverter circuit
anyone help please..
when you turn the high side on and the low side off, and then you want to change the condition become the reverse (turn the high side off and the low side on), you'll need deadtime between the two condition by turning off both high side and low side FET, to avoid 'shoot through'
i'm still working on my sensored bldc motor driver.
i need a solution to make my bldc motor start up softer.
i'm using open loop speed control method.
and one more problem is at above 50% duty cycle no start up failure occur, but at below 50% duty cycle the bldc motor start up often failed...
i'm trying to build 3 phases bldc motor driver (24 V). i'm using 3 hall sensors (separated 120 degrees each other) for rotor position detecting. But the motor almost always doesn't start rotating without triggered by hand first. only in few times it can start rotate without hand trigger...
i'm trying to build my own controller for the motor. so i try to run the motor using my power inverter, applying the commutation step.
when the motor connected to its dedicated controller, the hall sensors output signal is digital (0v/5v). but when i run the motor using my own power inverter...
i have 3 phases bldc motor with 3 hall effect sensors inside, for sensing the rotor position. here is the output signal from the hall effect sensors:
0 v is detected when the sensors detecting one pole of the rotor magnet
and random signal is detected when the sensors detecting another...