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The value of packaging in people??s daily life is playing an increasingly important role. Among the many exquisite packaging of goods, corrugated boxes tacke up the first position. Although the corrugated CAD software has been used widely in the international market, but the design and production of corrugated boxes in the domestic corporation still mainly depend on manual operation. The development...
Man??s body is not straight, which is determined by biomorph. Therefore, a ??competent?? office chair must be consistent with the shape of human body, and their characteristics of movement, etc. From the perspective of ergonomics, this thesis aims to talk about some characteristics that an excellent office chair should have.
The calibration method of the soft iron and hard iron distortion based on attitude and heading reference system (AHRS) can boil down to the estimation of 12 parameters of magnetic deviation, normally using 12-state Kalman filter (KF) algorithm. The performance of compensation is limited by the accuracy of local inclination angle of magnetic field and initial heading. A 14-state extended Kalman filter...
In this paper, the performance indices of a gyro stabilized electro-optical system are analyzed and an index of zero steady-state error is put forward upon application and system's robust requirement. The article first analyzes one classical control scheme which is based on angular rate feedback and designed in frequency domain. This design has the advantage of fast response and excellent dynamic...
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