星火告訴您彈簧電子試驗(yàn)機(jī)系統(tǒng)主要由三個(gè)部分構(gòu)成：運(yùn)動(dòng)模塊、測(cè)量模塊和控制模塊。
Kesheng l you spring electronic universal testing machine mainly consists of three parts: themotion module, measuring module and control module.
彈簧電子試驗(yàn)機(jī)的運(yùn)動(dòng)模塊主要由步進(jìn)電機(jī)、聯(lián)軸器、絲杠螺母以及橫梁夾具等組成。其工作原理如下：步進(jìn)電機(jī)通過(guò)聯(lián)軸器帶動(dòng)滾珠絲杠轉(zhuǎn)動(dòng)，由絲杠螺母?jìng)鲃?dòng)驅(qū)動(dòng)橫梁作直線運(yùn)動(dòng)，并利用夾具實(shí)現(xiàn)對(duì)試件的拉伸壓縮。其中電機(jī)采用直聯(lián)的方式，省略了減速箱部分，這樣在保證輸出力矩和步距精度的前提下，減小了齒隙、空回所帶來(lái)的影響。絲杠螺母?jìng)鲃?dòng)選用滾珠絲杠螺母副，提高了傳動(dòng)效率，減小了因摩擦造成的位置精度的誤差。
The motion module spring electronic universal testing machine is mainly composed of a stepping motor, coupling, screw nut and beam clamp. It works as follows: step motor drives the ball screwto rotate through shaft coupling, beam driven linear motion of the screw nut drive, and the clamp of compression of the tensile specimen. The motor adopts a direct way, omitting the gearboxparts, so in order to ensure the output torque and the step accuracy, reduces the effect ofbacklash, backlash caused by. Screw nut drive the ball screw pair, improve transmissionefficiency, reduce the error of position accuracy because of the friction caused by the.
彈簧電子試驗(yàn)機(jī)測(cè)量模塊主要由位移傳感器、稱重傳感器、引伸計(jì)、放大器以及AD采集卡等構(gòu)成。步進(jìn)電機(jī)多用于開(kāi)環(huán)控制，但為了提高試驗(yàn)機(jī)的精度，研究中；利用位移傳感器對(duì)其進(jìn)行位置閉環(huán)控制，用來(lái)對(duì)開(kāi)環(huán)控制定位誤差進(jìn)行有效的校正與補(bǔ)償。稱重傳感器和引伸計(jì)分別將拉伸過(guò)程中的作用力和變形量轉(zhuǎn)變?yōu)槲⑷醯碾妷盒盘?hào)，經(jīng)過(guò)放大器放大后，通過(guò)AD采集卡傳遞給上位機(jī)，上位機(jī)進(jìn)行實(shí)時(shí)數(shù)據(jù)處理。
Spring electronic universal testing machine measuring module mainly consists of a displacement sensor, weighing sensor, extensometer, amplifier and AD data acquisition card. Stepper motor is used for the open loop control, but in order to improve the accuracy of test machine, study;position closed-loop control on the use of displacement sensor, used to open loop controlpositioning error correction and compensation effectively. Weighing sensor and extensometerrespectively will force during stretching and deformation into voltage signal, through theamplifier, card is passed to the host computer through the AD collection, the host computer forreal-time data processing.
彈簧電子試驗(yàn)機(jī)控制模塊主要由上位PC機(jī)、電機(jī)控制卡和細(xì)分驅(qū)動(dòng)器等組成。上位機(jī)將采集的數(shù)據(jù)進(jìn)行處理后，給電機(jī)控制卡發(fā)送位置、速度和加速就指令；電機(jī)控制卡按照接收到的指令，產(chǎn)生相應(yīng)的脈沖信號(hào)；細(xì)分驅(qū)動(dòng)器依據(jù)產(chǎn)生的脈沖信號(hào)，使步進(jìn)電機(jī)實(shí)現(xiàn)平穩(wěn)運(yùn)轉(zhuǎn)。
Spring electronic universal testing machine is mainly composed of a PC host computer control module, motor control card and subdivision drive. Computer processing the collected data, to the motor control card sends the position, velocity and acceleration on the directive; motor control card according to the received command, generates a pulse signal corresponding;subdivision driver according to produce pulse signal, the stepper motor to achieve smooth operation.
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