x
uploads/facula.jpg

facula n.(pl. -lae ) 【天文學】(太陽的)光斑〔c...

faculae

Because the element of the far field diagnosis system which is used to detecte facula is ccd , when it works , much types of noise will affect it , and threshold value will affect the efficient signal . in this paper , hartmann - shack wavefront sensor which can detect the phase of beam is studied , what is detected by hartmann - shack wavefront sensor can be transform into far field , and we compare this result with that detected by the far field diagnosis system , and we can know which system is more accurate 事實上, hartmann - shack波前傳感器的ccd在探測光斑陣列時,也同樣受ccd噪聲因素的影響,并且還有波前本身的復原誤差,但是hartamnn - shack波前傳感器的ccd噪聲影響的是波前復原精度,雖然這也將導致事后處理遠場光斑的誤差,但這種誤差與遠場測量系統的誤差相比孰大孰小是本文研究的主要內容。

The research is based on a type of low - cost desktop rapid prototyping system which replaces the laser with common uv light . in stereolithography process , once the cross - section contours is obtained through the slicing processing on stl model , it is needed to do more data processing such as inside and outside boundaries recognition , facula radius compensation , scanning and path planning to generate process control data 在光固化快速成型工藝中,當由切片軟件對stl模型進行切片處理得到了層片截面輪廓后,為了形成加工控制數據,必須對截面輪廓進行諸如內外輪廓識別、工藝補償、掃描及加工路徑規劃等一系列的工藝數據處理。

The result was identical with x - ray diffraction analysis . the photodamage resistance ability of in : linbo3 crystals was measured by the holographity mehod and the directly observing facula distortion method . it was shown that the photodamage resistance ability of in ( 2mol % ) : linbo3 crystals was two orders of magnitude higher than that of pure linbo _ ( 3 ) crystal 本文用全息法和直接觀測光斑畸變法測試了in : linbo _ 3晶體的抗光折變能力,結果表明, in ( 2mol ) : linbo _ 3晶體的抗光損傷(光折變)能力比純linbo _ 3晶體的抗光損傷能力提高2個數量級以上。

It compute the parameter of deflexion caused by thermal distortion in orbit , deduce the general expression for spreading beam after thermal distortion of reflector and the center deflexion of facula received in ccd . with the method of fixing etc , it put forward the restrain measures adopted accordingly 計算了在軌運行條件下反射鏡面熱變形引起的表面法向偏轉參數,推導了鏡面變形后出射光線的通用表達式以及鏡面變形前后在ccd探測器上的接收光斑中心偏轉量的計算表達式。

When applying an external force on a columnar contact - tip , the corresponding four conical contact - tips will be pressed to the wave - guide plate , which breaks the condition of full inner reflection in the guided wave , and faculae arise because of the leaking light 圓柱觸頭受外力f作用時,對應的四個圓錐觸頭將受到擠壓,由于光波導路中導波的全內反射條件遭到破壞而產生光泄漏,在波導板上形成光斑。

The contact areas between the four conical contact - tips and the wave - guide plate are not equal as three components of external force are unequal , and the corresponding faculae areas < wp = 8 > captured by ccd camera are different from each other 當三個方向分力大小不同時,就一個圓柱觸頭而言,下面的4個圓錐觸頭與丙烯板的接觸面積不相等,因而位于丙烯板另一面的ccd攝像器所攝取到的光斑面積也不相同。

Therefore , the component force in any direction can be easily calculated through the faculae captured by ccd camera , which provides a good solution to three - axis tactile sensing technology for intelligent robots 反之,可以很容易地通過光斑面積計算出圓柱觸頭所受到的外力,檢測到在任意方向上的分力大小,從而為智能機器人三軸力觸覺傳感技術提供了一種新的解決方案。

The faculae arise with change of the cutoff frequency when the wave - guide transforms from symmetry to asymmetry . for each pattern rank of the planar wave - guide , the light with the cutoff frequency change will be leaked out and captured by the ccd camera 對存在于對稱平面波導中的各個模次的光,將有的光被泄漏,而ccd所攝到的則是其中被反射的一部分。

Through fea method , it ' s suggested that the areas of faculae have a specific relationship with the externally applied force on the sensor . the corresponding mathematical model is deduced from many simulations using the apdl program 在ansys中應用apdl語言編程,經過大量的模擬和仿真,建立了外力和光斑面積之間相應的數學模型關系。

In the displacement measurement based on the principle of laser interference , the gaussian quadrics fitting algorithm is used to fix the central position of facula and raise the location accuracy 在基于兩球面波干涉的長度和距離測量實驗中,運用高斯二次曲面擬合算法為激光光斑的中心坐標定位,提高了光斑的定位精度。

This paper goes into details on the principle of faculae with maxwell electromagnetic theory . in conclusion : the planar wave - guide is just like a high pass filter 結果表明,當傳感器受到外力f時,在波導中將有個模式不能繼續存在于波導中而輻射出去。

It is comprised of a silicone rubber sheet , a wave - guide plate , an apparatus to apply three - axis force and facilities to capture faculae 它由一個硅橡膠墊、一個光波導路、一個三軸力加載裝置和光斑的采集設備等組成。

Faculae ? extra - bright areas between granules ? appear to rise above the surface ; they may account for the increased output during solar maximums 米粒之間最明亮的光斑,則是在太陽極大期時,物質激烈噴發沖出表面所造成。

Equip with facula control pipes , otherwise has alterable focus mirror facula . which can adjust 2mm to 6mm . provide choosing and buying for consumer 配有光斑控制管另備有變焦鏡頭光斑可在2 - 6mm調整,供用戶選購

Finally the influence of facula dithering on the guidance precision is estimated using the influence factor for some of aircraft weapons 通過引入影響因子來評價光斑抖動對制導精度的影響。

These faculae frequently are the forerunners of sunspot formation . 這些光斑常常是形成太陽黑子的先兆。