نتایج جستجو برای: pot transplanter was designed
تعداد نتایج: 4077355 فیلتر نتایج به سال:
a paper-pot transplanter was designed, developed and evaluated in the field by transplanting sugar beet seedlings grown in paper pots. a ground-driven counter wheel equipped with an infra-red sensor measures the traveled distance and sends the corresponding signals to a micro-controller. a step motor controlled by the micro-controller turns the driving shaft of the paper-pot metering mechanism ...
To improve the seedling-picking efficiency of vegetable transplanter and reduce damage rate seedling pot, a reciprocating device driven by full air pressure was designed. In this paper, structure working principle pneumatic are introduced. Through mechanical analysis between claw parameters such as stroke driving force clamping cylinder were determined. According to action sequence mechanism, w...
this thesis is presented 10 ghz voltage controlled ring oscillator for high speed application. the voltage controlled ring oscillator was designed and fabricated in 0.13یm cmos technology. the oscillator is 7-stages ring oscillator with one inverter replaced by nand-gate for shutting down in the ring oscillator during idle mode. tri-state inverter was used to control of 126 bit vector in ri...
To improve the accuracy of simulation parameters used in discrete element tests for transplanting operation machine and to facilitate further optimization crucial components machine, this paper, model 50-hole plug seedling pots was calibrated optimized based on collision impact force between pot steel plate measured by a flexible film network tactile pressure sensor. Basic determined contact po...
manual planting of sugar-beet stecklings is a very laborious and time-consuming opera-tion. to overcome the problems, and decrease the cost of operation to a reasonable level, a semi-automatic steckling transplanter was designed. the suitability of the steckling trans-planter with regard to the agrotechnical requirements of sugar-beet stecklings was stud-ied and the main field performance param...
this study was designed to investigate the impacts of teachers self-disclosure on students foreign language classroom anxiety, attitude to english language learning and their achievement scores at the end of the term. there were 48 female learners of intermediate level. they were not randomly selected. there were one experimental group with 21 students and one control group with 27 students.the...
Aiming at the trouble of low survival rate cantaloupe seedling in hyperthermia, drought and dry land Turpan region China, existing transplanting machine is key to mechanized non-destructive transportation planting large plants young tender melon seedlings, root water injection, precise soil piling holes,and other technical difficulties. The design mulch film transplanter for laying pipes belts ...
To decrease the impact of uncertainty disturbance such as sideslip from field environment on path tracking control accuracy an unmanned rice transplanter, a method for autonomous transplanter based adaptive sliding mode variable structure was proposed. A radial basis function (RBF) neural network, which can precisely approximate arbitrary nonlinear function, used parameter auto-tuning on-line. ...
The operation of the semi-automatic pepper pot seedling transplanter has problem a low frequency manual operation. We designed new automatic transplanting mechanism based on clamping stem. Through movement law double-crank connecting rod mechanism, static trajectory beak shape and dynamic N were to meet requirements backward transplanting. kinematics equation picking was established parameter o...
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