Camshaft Closed Loop Control - PID Setup

PID Setup 

Applicable to both intake & exhaust PID setup

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The positioning control of the Camshaft(s) is governed by the Emtron PID closed loop function.

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Intake Deadband +/- 

The output control signal is held constant when the Input Signal (Cam Position) falls within the deadband range of the Target. 

This helps reduce steady state error and oscillations.

**BMW Motorsport VANOS systems switches off the control signal automatically when in deadband to hydraulically lock the cam position. 

Typical : 0.5 degrees

Integral Positive Clamp

Allows the user to set the the maximum Integral gain compensation used by the closed loop system.  

Integral Negative Clamp

Allows the user to set the minimum Integral gain compensation used by the closed loop system

Feed Forward 

Having a correct feed forward duty cycle value allows for more precise control.

This feed forward value is added to the control signal before the PID is applied.  

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Tuning Tip: 

This is the expected duty cycle of the solenoid to hold the camshaft in a given position.

It can be quickly determined by commanding the camshaft to a position & witnessing the required duty to do so.

Commanding an alternative angle will deliver a similar result, the average of these is your feed forward value.

Intake Target Filter

Filters the Target signal to help smooth out any pulsations.

Typical Value: 5 ( 0 = OFF)

VVTiE Base Control Frequency

Toyota 2URFSE/2URGSE VVTiE Base frequency setting at 1000rpm

For PID Exhaust setup

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