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What I understand from PID control is that the control constants are adjusted such that the response signal approaches the set point quick enough with less overshoot and oscillation as possible. So you (albbg) are saying that I should run tests with different, Kp, Kd and Ki values and record the...
At the moment to me the control is not that basic. If you know of any reference that I can use please help. The reason for the references is that it will help in providing proper documentation of the whole project, as my evaluation is based on a working system and a good technical report of home...
Hello,
I have a project where I have to synchronize the speeds of two DC motors, the master motor and the slave motor. I will have to manually adjust the speed of the master motor and the slave motor should follow the speed of the master( They should both rotate with the same speed). I would...
How do i automatically adjust my PWM signal to suit my output current needs?
According to what you said, if i am correct, when my output current is below setpoint(1A) my PWM signal should increase to bring it close to setpoint also when current is higher than setpoint PWM signal should decrease...
PSU, power supply unit? i have a switch mode power supply that is working. it is a flyback converter. yes the dsPIC has an ADC and it working fine, i am able to read the voltages from the sensor out on the dsPIC's ADC buffer. yes i can take sample of the current. "....then break the loop if the...
hi, first all i don't know what a hiccup current limiter is. From the documents i have seen on this it looks like i will need an extra IC for such, if not so i dont have enough time figure out how it works. i am to use a dsPIC to control my output current.
Hi,
I need to control the output current of a flyback converter to be constant using the dsPIC33FJ64MC802. the converter is to drive a 20W high power LED. I am using a hall effect sensor (LEM, LTSR 6NP)for output current sensing. i want to maintain my output current to a constant value of 1A. i...
Hey BradtheRad and thylacine1975
I check my circuit over and over. After combining the grounds of the gate drive and that of the main input(one connected to the source of mosfet switch), as done on the HCPL 3120 application circuit, I no longer experienced any overheating of the switch. The...
Bradtherad I don't unerstand what to do with the information you gave me. I only understand that with a small on resistance supply current does not go to zero.
Attached are the circuit diagram i used to simulate on Psim and the pcb i have designed.
is there anything wrong with the my pcb?
i...
Lp=10.53 mH is the designed value.
The switching frequency is at 50kHz and the maximum duty cycle is 50% with a minimum of 47.5%.
"It also is vital that your switching component turn off completely. Can you verify that it is?"
No, i don't know what circuit to use to see if my gate...
hello,
i am designing a converter to drive a high power LED(20W). the system has to be a single stage. so i have decided to use the flyback converter. however after building the converter and testing, i seem to draw too much current than expected. My maximum peak input current is 0.2904A from...
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