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长春光学精密机械与... [26]
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会议论文 [24]
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专题:长春光学精密机械与物理研究所
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The fast turnaround research about servo control strategy
期刊论文
Basic & Clinical Pharmacology & Toxicology, 2019, 卷号: 125, 页码: 13-14
作者:
Z.D.Zhang
;
R.Q.Jiang
;
Y.Liu
;
B.Li
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2020/08/24
Servo control,Turntable,Control strategy,Fast turnaround,Start and,stop,Pharmacology & Pharmacy,Toxicology
The research about servo control of 6-DOF workbench based on vacuum environment
期刊论文
Basic & Clinical Pharmacology & Toxicology, 2019, 卷号: 125, 页码: 20-20
作者:
H.Z.Yu
;
Y.Y.Sun
;
G.Wang
;
W.J.Chang
;
L.X.Zhao
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2020/08/24
Vacuum environment,Servo control,Workbench,Six degrees of freedom,Pharmacology & Pharmacy,Toxicology
LABTM control system based on FPGA (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Li X. F.
;
Wang X. P.
;
Qi X. D.
;
Wang Y.
;
Yu P.
收藏
  |  
浏览/下载:140/0
  |  
提交时间:2013/03/25
This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System GeneratorR toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture
plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI
a real LABTM
and a real absolute Inductosyn
encoder to rpm and position blocks. Through loading generated codes in process of the simulation that built by the digital discrete model
it is verified that the rising time of current loop is only 1.2ms
and rate loop is 8ms
overshoot is rarely 4.2%. Finally
the comprehensive positioning accuracy of system can reach up to 5 arc sec
and the rate jitter achieves 5% with the 4 arc sec accuracy absolute Inductosyn. (2013) Trans Tech Publications
Switzerland.
A servo control system of dynamic target simulation device for aerial camera (EI CONFERENCE)
会议论文
2nd International Conference on Advanced Design and Manufacturing Engineering, ADME 2012, August 16, 2012 - August 18, 2012, Taiyuan, China
Ji Q.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
This article introduces a dynamic target simulation device to evaluate dynamic image quality of the aerial camera. The device simulated the positional relationship of the sky and ground in the laboratory when aerial camera flies at high altitude. And it can be used to inspect camera image quality of aerial camera flying at high altitude in laboratory. At a same time
the article focuses on this servo control system of device
building a control model
and giving control strategy. The servo control system was proved stably and reliably after experimental verification. And it provides a strong guarantee for the test of the dynamic image. (2012) Trans Tech Publications
Switzerland.
Modeling and variable structure control of a vehicle flexible manipulator (EI CONFERENCE)
会议论文
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
Sxu Y.
;
Qiao Y.
;
Wang Z.
;
Liu K.
;
Li Y.
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2013/03/25
In this paper
the mathematical modeling and the application of a new trajectory tracking control technique for hydraulic-driven rigid-flexible manipulator are concerned. To get a closer dynamic behavior of the real system
both the flexible manipulator linkage and the actuator dynamics are considered. The exact dynamic model of flexible manipulator is derived using Lagrange principle and assumed modes method. The partial decoupled dynamic equation is derived using nonlinear decoupling feedback control method. The whole dynamic model is established by a driven Jacobin matrix
which represents the coupling between hydraulic servo system and mechanical system. A variable structure controller with inverse dynamics is designed for trajectory tracking. To weaken the chattering of control signal
saturation function is used to instead of sign function. The experimental results investigate the effectiveness of the proposed approaches. 2012 IEEE.
The research on adaptive measurement of angular acceleration for photoelectric servo turntable (EI CONFERENCE)
会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
Liang W.
;
Guo J.
;
Chen J.
;
Feng F.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
The paper proposes a new measurement method of angular acceleration for photoelectric servo turntable. Piezoelectric angular acceleration sensor is used to measure angular acceleration directly
Adaptive FIR filter based on LMS algorithm is established on DSP
by which angular acceleration signal can be filtered and corrected errors adaptively
then angular acceleration signals can be measured adaptively. This method avoids measurement errors and calculation noise by computing angular acceleration indirectly
thus improving measurement precision and making measurement results better than traditional methods. The gotten angular acceleration can be sent to servo control mechanism as feed forward control signals to improve control effects of servo turntable significantly. 2011 IEEE.
Study on the servo system of large telescope based on the internal model pid control strategy (EI CONFERENCE)
会议论文
IEEE 2011 10th International Conference on Electronic Measurement and Instruments, ICEMI 2011, August 16, 2011 - August 18, 2011, Chengdu, China
Li H.
收藏
  |  
浏览/下载:15/0
  |  
提交时间:2013/03/25
This paper developed the internal model PID control for large telescope control system considerations in more parameters adjustment in servo control loop at present. The large electro-optic telescope system belongs to a big inertia system. This simplifies the debug process
the feasibility and robustability are also verified by the analyses and simulation results that satisfy the high precision demand. The practicability of this algorithm is verified in an actual project that only two parameters need adjusted. The application shows that this system runs stably with high accuracy. The technology and methods adopted in the system are practical and worthy of using abroad. 2011 IEEE.
Stabilization and tracking precision improved based on disturbance observer (EI CONFERENCE)
会议论文
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
Sun G.
;
Zhu M.
;
Jia H.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
Based on the kinematics of semi-strapdown seeker
the framework coordinate of the semi-strapdown seeker is established and the optical axis stabilization equation of semistrapdown seeker is deduced based on product of exponential (POE) formula. The stabilization control principle block diagram of semi-strapdown seeker is shown based on the stabilization equation. The main influence factors of the stability precision are pointed out
such as friction disturbance
velocity measurement noise and missile disturbance. For the sake of improving the stabilization precision and tracking precision
disturbance observer was proposed in the inner loop of semi-strapdown seeker servo-control system. The low frequency external disturbance and high frequency velocity measurement noise are effectively restrained by the disturbance observer as shown in hardware-in-loop simulation
and optical axis stabilization precision and tracking precision are greatly improved. 2011 IEEE.
A brushless DC motor controller with current-loop control (EI CONFERENCE)
会议论文
2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China
Gao S.
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2013/03/25
This paper presents a brushless DC motor controller with current loop control. The controller applies a complementary PWM modulation scheme to the power MOSFET. The current processor employed by the controller could detect the current flow through the motor windings accurately and convert the current to a voltage input to the error amplifier. The controller has 100% duty cycle high side conduction capability and real four quadrant torque control capability. It is able to implement a tight torque control for a DC brushless motor to satisfy the need of some servo system which calls for high bandwidth and raid dynamic response. 2011 IEEE.
Design and test of pointing mirror assembly for spaceborne remote sensing camera (EI CONFERENCE)
会议论文
2011 International Conference on Electronics, Communications and Control, ICECC 2011, September 9, 2011 - September 11, 2011, Ningbo, China
Chen W.
;
Ding Y.
;
Hui S.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
In order to ensure the surface figure of the pointing mirror (460mm long
290mm wide) in spaceborne remote sensing camera
Silicon Carbide was selected as the mirror material. The form of composite triangular and rectangular and the combination of open and closed back was explored in the lightweight design. A new kinematic mount and flexible structure in axis is used to hold the mirror around the lateral surface. The structure can minimize distortions induced by coefficient of thermal expansion mismatch among the materials. This eliminates the bending of the integral mount under the weight of the mirror. Optical performance of the mirror was analyzed under gravity load and temperature load using finite element method. Predicted surface figure error based on the removal of bias
tilt and power was calculated using an in-house Matlab script for mirrors. The pointing mirror assembly was tested using open loop servo control. And the surface figure was checked using interferometer. Surface figure accuracy is better than 1/30 ( 632.8nm
rms). The results show that the kinematic mount induces minimal figure error on the optical surface. 2011 IEEE.
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