Abstract: A driving amount controller for reducing a response delay or erroneous deviation in control of a driving amount of a controlled system. The driving amount controller includes an ECU that increases an add-in amount to a duty ratio DUT of a control signal according to an increase in the speed variation ?DTHR of a target opening DTRH of the throttle valve 16 when the speed variation ?DTHR is positive. In addition, the ECU increases the add-in amount to the duty ratio DUT of the control signal according to a decrease in the speed variation ?DTHR when the speed variation ?DTHR is negative. A throttle valve on a vehicle is an example of the controlled system.

Abstract: An engine control method, based on engine intake pressure, is operable to shorten a period from a start of cranking until a sequential fuel injection control is determined. Provisional and final stroke determinations are made for a plurality of cylinders from a synthetic manifold pressure waveform. The provisional stroke determination is made after a crankshaft is rotated 720 degrees after settlement of a crank reference position. The final stroke determination is made when the crankshaft rotates 1440 degrees after the provisional stroke determination. When the provisional stroke determination is made, fuel is injected into the cylinders based on a detected value of the engine intake pressure; and when the stroke determination is finally settled, the fuel injection and ignition of the engine are controlled based on the detected value of the engine intake pressure.

Abstract: An engine ignition control apparatus for controlling ignition of a multi-cylinder, 4-cycle engine includes dual ignition coils for controlling ignition timing of the respective cylinders during engine operation. The engine ignition control apparatus includes a stroke determination unit for determining a stroke based on crank pulses and on an output signal of an intake pressure sensor. The engine ignition control apparatus also includes an ignition map allocation unit for allocating ignition maps to the respective cylinders of two ignition systems, each having a pair of cylinders with a same phase, before the stroke determination. The ignition map allocation unit also allocates ignition maps independently to each of the respective cylinders after the stroke determination. The engine ignition control apparatus also includes an ignition timing calculation unit for calculating ignition timing of the respective ignition coils based on the ignition maps allocated to the respective cylinders.

Abstract: A driving amount controller for reducing the response delay or erroneous deviation in the control of a driving amount of a controlled system, for example, in the control of the opening of a throttle valve. When a target opening DTHR is varied starting from the condition where the throttle valve is stopped, an ECU 20 on a vehicle calculates an output of a motor necessary for a starting operation of the motor, and outputs a control signal Se obtained through compensation of a deficiency.

Abstract: A driving amount controller for reducing a response delay or erroneous deviation in control of a driving amount of a controlled system. The driving amount controller includes an ECU that increases an add-in amount to a duty ratio DUT of a control signal according to an increase in the speed variation ?DTHR of a target opening DTRH of the throttle valve 16 when the speed variation ?DTHR is positive. In addition, the ECU increases the add-in amount to the duty ratio DUT of the control signal according to a decrease in the speed variation ?DTHR when the speed variation ?DTHR is negative. A throttle valve on a vehicle is an example of the controlled system.

Abstract: A driving amount controller is provided for a vehicle. An ECU on the vehicle reduces a damping output Udamp when the deviation e between the target opening DTHR of the throttle valve and the actual opening DTH is near zero or when a switching function value ? is near zero. This makes it possible to reduce the damping output Udamp immediately after the start of, or immediately before the end of, the control of the opening of the throttle valve when the deviation e or the switching function value ? is near zero, and to realize a high response performance as to the control of the actual opening DTH of the throttle valve.