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To improve the low state estimation accuracy of nonlinear state estimation due to large initial estimation error and nonlinearity of measurement equation, we obtain Levenberg-Marquardt (abbr. L-M) method based iteration square root cubature Kalman filter (ISRCKFLM) combining the measurement update of square root cubature Kalman filter (SRCKF) with nonlinear least square error, so the ISRCKFLM algorithm...
In order to get high-performance gaze direction, this paper proposes a three-dimensional view estimation method based on double cameras and double light source, to overcome the natural head movement under relatively large, estimated accuracy of sight. This paper presents a completely rely on spatial geometry calculations to achieve the user's line of sight placement calculation method. First calibrate...
The mean methods of improving performance of modern diesel engine include increasing speed, increasing cycle fuel injection quantity, increasing fuel injection pressure and intake boosting technology, so that more fuel quickly mixing with incylinder air in shorter time is requested. For solving these problems, the spray characteristics under the high injection pressure and high ambiance density must...
The mean methods of improving performance of modern diesel engine include increasing speed, increasing cycle fuel injection quantity, increasing fuel injection pressure and intake boosting technology, so that more fuel quickly mixing with in cylinder air in shorter time is requested. For solving these problems, the spray characteristics under the high injection pressure and high ambiance density must...
The rail pressure signal of electronic control high pressure common rail fuel injection system for diesel engines is used to the closed loop control for rail pressure and the determination of the energizing time for fuel injection. Traditionally rail pressure signal processing method uses 10 ms filter to get the average rail pressure for control the system. With the rail pressure signals measured...
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