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长春光学精密机械与物... [3]
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期刊论文 [6]
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Preparation of CaO granules using the granulation method
期刊论文
OAI收割
ADVANCES IN APPLIED CERAMICS, 2018, 卷号: 117, 期号: 6, 页码: 334-339
作者:
Zhang, Q
;
Wei, YW
;
Zhang, T
;
Han, BQ
;
Liu, K
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收藏
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浏览/下载:52/0
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提交时间:2018/12/25
CaO granules
granulation method
rotational speed
hydration resistance
Preparation of CaO granules using the granulation method
期刊论文
OAI收割
ADVANCES IN APPLIED CERAMICS, 2018, 卷号: 117, 期号: 6, 页码: 334-339
作者:
  |  
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2021/02/02
CaO granules
granulation method
rotational speed
hydration resistance
Rotational viscosity comparison of liquid crystals based on the molecular dynamics of mixtures
期刊论文
OAI收割
ACTA PHYSICA SINICA, 2015, 卷号: 64, 期号: 12, 页码: 126102
作者:
Wang, QD
;
Peng, ZH
;
Liu, YG
;
Yao, LS
;
Ren, G
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2016/11/21
liquid crystal
response speed
molecular dynamics simulation
rotational viscosity
Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE)
会议论文
OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者:
Zhang J.
;
Zhang J.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
In order to apply the electromechanical actuator to tactical mini-missiles
maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators
this paper researches on the key technology such as load-bearing ability
the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load
thus the method is feasible. 2010 IEEE.
rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First
according to specific technical indexes
the power
electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally
based on the characteristics of ball screw transmission
load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment
Automatic spin coater for concave spherical substrate (EI CONFERENCE)
会议论文
OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, July 8, 2007 - July 12, 2007, Chengdu, China
Fengchao L.
;
Jingsong G.
;
Xiaoguo F.
;
Jingli Z.
;
Zhijun X.
;
Jun H.
;
Fenglin X.
;
Huiqing W.
;
Xiaohan L.
收藏
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浏览/下载:25/0
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提交时间:2013/03/25
Coating photoresist film with uniform thickness on concave spherical substrate (CSS) is very important for microfabrication of concave spherical optical elements by lithography technique via a laser direct writer
for the uneven photoresist film will result in ununiformity of line width so as to influence the characters of optical elements. For improving the uniformity of photoresist film coating on CSS
an automatic spin coater was designed. The process and the mathematical model of spin coating for CSS were analyzed. Difficulties for realizing the spin coater consist of the control of multi-axis motion precisely and collaboratively
valves on/ff properly and real-timely. A flexible and well-behaved spinning motion system was achieved by tmeans of principal and subordinate CPUs control. The motion program for spin coating could be created and implemented automatically while the pressure and the valves were was watched and controlled in real time. Film coating and laser direct writing experiments on a CSS with aperture equals to 100 mm and radius equals to 370 mm were performed. Photoresist film with uniform thickness on CSS was obtained by selecting proper spin coating parameters such as rotational speed
acceleration and viscosity of the photoresist. After development
the section analysis by the atomic force microscope showed that photoresist film thickness was about 517 nm in the center and about 520 nm in the edge of substrate
the film thickness error was within 1%
and the line width was about 6.0 m with steep sides parallel each other. Experimental results indicate that uniform thickness of thin photoresist film has been coated on CSS by the spin coater
which contributes to quality improvement of laser direct writing lines on CSS.
Performance Test and Flow Measurement of Contra-Rotating Axial Flow Pump
期刊论文
OAI收割
JOURNAL OF THERMAL SCIENCE, 2007, 卷号: 16, 期号: 1, 页码: 7,13
Akinori Furukawa
;
Toru Shigemitsu
;
Satoshi Watanabe
收藏
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浏览/下载:32/0
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提交时间:2013/01/31
axial flow pump
contra-rotating rotors
multiphase flow
rotational speed control
blade rows interaction
Electroless copper coating on nickel foils in super-gravity field
期刊论文
OAI收割
MATERIALS LETTERS, 2005, 卷号: 59, 期号: 6, 页码: 667-670
作者:
Gong, YP
;
Guo, ZC
;
Lu, WC
收藏
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浏览/下载:30/0
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提交时间:2013/10/25
super-gravity
electroless copper plating
plating rate
rotational speed
Position following control system for the dome based on TMS320F2812 (EI CONFERENCE)
会议论文
OAI收割
ICMIT 2005: Control Systems and Robotics, September 20, 2005 - September 23, 2005, Chongging, China
作者:
Zhao J.
收藏
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浏览/下载:19/0
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提交时间:2013/03/25
A position following control system was discussed to synchronize the rotational position of the dome with that of the theodolite. There were two loops in the servo control system. Open loop control was for speed adjustment
while closed loop control was for position following control. The core controller of the servo control system adopted TMS320F2812 DSP (Digital Signal Processing) chip and an absolute type encoder was used as a position feedback unit. A converter DA8562 converted the digital angular position calculated in DSP to an analogy voltage to control the dome rotation through a series of devices such as frequency conversion actiyator
servomotor and gear case. The experimental results show that the system synchronous following error less than 2 at 0.1/s to 35/s.
Unsteady Operation of New Type Turbofan Engine with Aerodynamic Torque Converter Reducing Front Fan Speed
期刊论文
OAI收割
JOURNAL OF THERMAL SCIENCE, 2005, 卷号: 14, 期号: 3, 页码: 206,210
Toshiaki KANEMOTO
;
Seita SEKI
;
KazunoriIDENO
;
Ahmed Mohamed GALAL
收藏
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浏览/下载:23/0
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提交时间:2013/03/11
turbofan engine
front fan
torque converter
rotational speed