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Online since: September 2015
Authors: S.S. Tarasenko, Yu.N. Isaev, V.A. Kolchanova
For reduction to its lowest terms, the machine doesn’t have damper windings and we won’t take the salient-pole and the quantity of the active resistance of the stator R into account.
are the main technical data of the machine: a synchronous reactance in the direct and quadrature axes, direct axis transient reactance, resistance of the stator winding, respectively [2].
Online since: January 2009
Authors: Albinas Kasparaitis, Rimantas Barauskas, Aurimas Jakstas, Artūras Kilikevičius, Saulius Kausinis, A. Barakauskas
As it can be clearly seen from comparison of the measurement data presented in Fig. 5a and Fig. 5b, the reduction of vibrations caused by the carriage drive can be substantial.
Online since: April 2005
Authors: Faik Nuzhet Oktar, B.V. Sampaio, Patricia Valério, Alfredo Goes, M. Fatima Leite, G. Göller
Viability was evaluated by MTT assay, based on the reduction of tetrazolium salt to formazan crystals by dehydrogenase present in living cells mitochondria.
Data were analyzed by variance test ANOVA, using Bonferroni's post-test.
Online since: December 2011
Authors: Wei Li, Yan Ma, Dan Ping Li
The NC machining has the following characteristics, such as the remarkable flexibility and precision, the high productivity, the reduction of the labor intensity, the improvement of labor’s working condition, the conduciveness to modernization of production management and the improvement of economic efficiency.
(3) where n = the type number of the ith component’s failure mode = the fraction of the component i’s failures having failure mode j = the condition probability that failure mode j will result in the identified failure effect = the failure rate of component i The duration time of 87 failure data of the machining center is 56110.18 hours.
Online since: July 2012
Authors: Ling Li, Zu Hua Fang, Chun Wang, Ting Ting Hong, Jia Jia Li, Wen Lv, Ying Sun
Structure and Control Principle of ETCS The research on electronic throttle [2,3,4] in this paper is Bosch DV-E5, which is composed of throttle valve, DC-motor, reduction gear, throttle position sensor(TPS) and return spring(Fig 1).
The Fig.6 shows a subprogram which is to control the electronic throttle, and its principle is that the sensor collects signals and send them to ECU, then ECU process the data by A/D conversion and PID controller.
Online since: June 2014
Authors: Jun Fang Wang, Chao Li, Dong Dong Wang
Puting the above parameters into equation (1), we get Tt: The maximum rotational speed of wheel is Setting the output rotational speed of motor , Selecting reducer transmission ratio , the wheel speed after reduction is , which meet the requirements of maximum speed of moving vehicle.
The output power of the motor: The output torque of the motor: Based on the above calculation, Data DC power is chosen.
Online since: November 2012
Authors: Yu Long Li, H. Cui
Besides, traditional data reduction methods for evaluating delamination toughness based on linear elastic fracture mechanics may be not applicable, due to the large bridging zone during the delamination process [7, 8].
Online since: July 2011
Authors: Jeong Min Kim, Young Ho Song, Won Seok Yang, Hee Taek Shin, Yeon Soo Koo, Dong Wook Lim, Joon Sik Park
However, the reported data are often not sufficient.
Fig. 2 Microstructures of (a) as-cast AZ31 alloy, (b) 6 hrs annealing at 380 °C, (c) 12 hrs annealing at 380 °C and (d) 18 hrs annealing at 380 °C Table I High temperature compressive strengths and yield strengths at various temperatures annealed for 6 hr, 12 hr and 18 hrs at 380 °C Fig. 3 Microstructures of the extruded bar (a) vertical direction (extrusion direction towards the paper Ä), (b) cross direction (extrusion direction towards right direction) Fig. 4 Tensile stress strain curves of (a) the as-cast and (b)extrude bar at room temperature Fig. 4 shows the stress strain curves of the as-cast and extruded bar with the reduction ratio of 80%.
Online since: February 2014
Authors: Karel Kubečka, Darja Kubečková, Pavel Vlček
An important part of the appraisal and market prices is depreciation, a reduction in price due to old age or a price increase due to rehabilitation, reconstruction or repair.
The finding is evident from the example: Table 1: Test-01 Expert 1 0 0 0 3 3 3 Expert 2 0 0 0 3 3 3 Expert 3 0 0 0 3 3 3 Expert 4 0 0 0 3 3 3 According to (3) we get the result: Table 2: Test-02 Expert 1 1 1 1 4 4 4 Expert 2 1 1 1 4 4 4 Expert 3 1 1 1 4 4 4 Expert 4 1 1 1 4 4 4 If 'move beginning ", it means that we use a different scale (Table 2) than that (Table 1), such as 1 ÷ 4, we obtain a logically consistent result by equation (4) For other data, such as additional objects, we obtain similar, but different evaluation resources, with the same (always the same) overall result Pck = 0.5.
Online since: February 2014
Authors: Guang Jun Li, Ling Bo Zheng
Introduction The main requirement of the flywheel energy storage system in discharge link is stable output voltage; because of the continuous deceleration of the flywheel in the energy-releasing process and the continuous reduction of the voltage emitted by the permanent magnet synchronous generator, the change of the load also influences the voltage on the generator and then influences the voltage emitted by the generator; all those factors increase the difficulty of obtaining good and stable voltage output performance.
Through the data analysis, the voltage regulation rate and the output voltage ripple reach the design index and the power supply efficiency reaches 80%.
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