5 results about "Calculated result" patented technology

The invention relates to an unmanned corn harvester, and belongs to the technical field of unmanned aerial vehicle application. An unmanned aerial vehicle flies in low altitude over the unmanned corn harvester which performs corn harvesting operation, the lower face of the front portion of the unmanned aerial vehicle is provided with an electro-optical pod, a high-pixel digital camera installed in the electro-optical pod performs full-automatic photography work by aiming at the corn harvester which harvests corn and surrounding corn field, an image sensor of the digital camera inputs acquired aerial image information of grain field into a first electronic computer to be stored and imaged, and a digital image is input into a flight control computer to guide flying of the unmanned aerial vehicle. The aerial image information of the grain field is input into a second electronic computer through a first wireless communication device in the unmanned aerial vehicle, radio waves and a second wireless communication device in the unmanned corn harvester to be stored and calculated, and a calculated result is input into an unmanned self-control driving device to control a corn harvesting table arranged on the front portion of the unmanned corn harvester to perform operation of harvesting the corn.

The invention discloses a rectangular plate vibration mode calculation method based on the spectrum finite element. The method comprises the following steps that a plate vibration boundary value problem module is obtained on the basis of the energy function variation principle, and free vibration equations of two directions are obtained on the basis of the variable separation method; the boundary conditions of the two directions of the rectangular plate are determined, the vibration frequencies and the vibration modes are calculated by mutual iteration of different directions under the preset modal order, and the calculation is stopped until the error of the vibration frequencies, obtained by calculation, of the two directions is in a certain designated range; the finally obtained vibration modes of the two directions are used for overlaying to obtain the rectangular plate vibration mode. Calculation of the plate vibration modes is performed aiming at various combined boundary conditions, the influences of the rotation corners of any position of the two directions in the plate on the calculation effect of the plate vibration modes is considered, the vibration equation with the amplitude and the two rotation corners taken as the variables is obtained, the calculated result is more accurate, and the calculation method has the advantages that the practicability is wide and the application is convenient.

A hand-held calculating apparatus for solving a plurality of formula-related calculations and conversions commonly encountered in the machinist trade having a visual display and a keyboard including key groupings denominated as basic arithmetic and memory, function and conversion, timing and clear and on/off keys. The function and conversion key grouping permit a user to automatically convert among dimensional measurements in different systems while continuing to utilize an earlier calculated result in the present calculation.