- Wed Jan 13, 2021 6:13 am
#47554
Thanks for the reply. I understand the coil-resistance thing, which is why I fitted the diode in the first place and which is why the VVT control PID settings for the system including the diode are very different from the ones without the diode, as you can see above. (Pics work, now, right?)
The settings worked. I drove the car with both current and target VVT angles on my dashboard and it worked. I also had noticably more midrange power. For about 15 - 20 minutes. Then Speeduino froze the PWM duty cycle to 38, not budging, not controlling / correcting anymore. So, the VVT system, it's wiring, the basic control settings as posted above, work. But someting causes Speeduino to stop sending out the required PWM signal. Rebooting Speeduino did not help.
I agree I don't have a great understanding of PID tuning, although I did as you suggested and 'read' various explanations on Youtube before you suggested. But the PID settings I received worked. And if they worked for the person who sent them to me, and they worked in my car with identical engine, I feel the problem is not in the PID settings.
The only thing I can think of is that in the settings I copied, the minimum and maximum valve duties are zero. That doesn't make sense to me. Next I'll try to put in some numbers there, like 20 - 80, and see what I get.
Hugo
The settings worked. I drove the car with both current and target VVT angles on my dashboard and it worked. I also had noticably more midrange power. For about 15 - 20 minutes. Then Speeduino froze the PWM duty cycle to 38, not budging, not controlling / correcting anymore. So, the VVT system, it's wiring, the basic control settings as posted above, work. But someting causes Speeduino to stop sending out the required PWM signal. Rebooting Speeduino did not help.
I agree I don't have a great understanding of PID tuning, although I did as you suggested and 'read' various explanations on Youtube before you suggested. But the PID settings I received worked. And if they worked for the person who sent them to me, and they worked in my car with identical engine, I feel the problem is not in the PID settings.
The only thing I can think of is that in the settings I copied, the minimum and maximum valve duties are zero. That doesn't make sense to me. Next I'll try to put in some numbers there, like 20 - 80, and see what I get.
Hugo