From its knowledge of the system components, the innovative AFFC (Adaptive Feed Forward Control
) calculates the motor speed as the control variable for controlling the pressure.
A technique to reduce torque ripple by estimating and compensating the feed forward control
technique is reported in .
An adaptive feed forward control
works to drive the upcoming stroke of the piston, this being dependent on the preceding strokes to maintain the required charge, measured by the output of an encoder with an incremental resolution of 25nm.
Dynamic feed forward control
and computed torque control are common dynamic control methods [1-3].
A new multivariable optimal controller incorporating state feedback as well as feed forward control
for fast regulation and stability of a CSI fed IM drive is presented in this section.
To this can be connected feed forward control
Feedback and feed forward control
theory including Nyquist stability may be more relevant.
The idea of the feed forward control
is based on the assumption that most disturbances occur periodically with each rotation of the roller and can be predicted.
This is compensated by using a high pass filter with feed forward control
of stator flux and hence the jerk which is developed during transition from standstill to sensorless control can be avoided.
Most critical when seeking out the right solution is to find technology where the simultaneous measuring and calibration of all machine multi-axis kinematics for jerk limitation, feed forward control
, look-ahead, pilot control, and tool tip orientation are performed in process.
The actuators are driven in a closed feed forward control
loop, which means that multiple order harmonic waves are cancelled even when engine speeds change very quickly.
The load signal is used as a feed forward control
, to increase the fuel pressure when the load on the engine and its airflow increase.