Lotussuper7 Posted December 14, 2020 Report Share Posted December 14, 2020 Anybody have an idea of a valid update rate for a OEM Toyota throttle body (2AZ-fe). It seems to run fine at 1Khz, However is very noisy. Can you increase the frequency higher than this to quiet it down, or will it kill the TB? Any ideas? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted December 15, 2020 Report Share Posted December 15, 2020 I run my 2GR at 10,000Hz with no issues so far Quote Link to comment Share on other sites More sharing options...
Lotussuper7 Posted December 15, 2020 Author Report Share Posted December 15, 2020 That's good to hear. Thanks for the reply. The throttles do look very similar, does increasing the frequency require adjusting the PIDS? Also, what DC Max?Min clamp settings do you use? Kind regards Quote Link to comment Share on other sites More sharing options...
Vaughan Posted December 15, 2020 Report Share Posted December 15, 2020 The PID loop is always run at 1kHz, the PWM Frequency setting only adjusts the frequency of the HBridge switching and so doesn't affect the PID control. I typically use 90% & -90% for my EThrottle clamps. Quote Link to comment Share on other sites More sharing options...
mapper Posted December 19, 2020 Report Share Posted December 19, 2020 I would no necessarly agree that pwm frequency has no inlfuence. Especially at such high frequency i'ts likely the current is not a nice square wave any more. If you zoom in with a oscilloscope the tace is looking more like a sinus curve (eges rounded). Means total energy in the coil of DBW Motor( area under the curve) is less., especially at low Duty Cycles. This behavior can be seen already with 50hz+ on a Hella PWM Relay. koracing 1 Quote Link to comment Share on other sites More sharing options...
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