中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共7条，第1-7条

帮助

条数/页：排序方式：
	Improved sensing of vertical velocity for vertical position control using loop voltage signals on EAST 期刊论文 OAI收割 FUSION ENGINEERING AND DESIGN, 2019, 卷号: 138, 期号: 无, 页码: 170-174 作者: Liu, Lei; Xiao, Bingjia; Mueller, Dennis; Yuan, Qiping \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2020/05/21 Vertical instability control Signal-to-noise ratio Loop voltage Vertical velocity control
	Enhanced proportional power sharing strategy based on adaptive virtual impedance in low-voltage networked microgrid 期刊论文 OAI收割 IET GENERATION TRANSMISSION & DISTRIBUTION, 2018, 卷号: 12, 期号: 11, 页码: 2566-2576 作者: Zhang, Jiyuan; Shu, Jie; Ning, Jia; Huang, Lei; Wang, Hao \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2020/10/29 distributed power generation power generation control reactive power control enhanced proportional power sharing strategy adaptive virtual impedance loop low-voltage networked microgrid electrical distance variation electric network complexity feeder impedances variations distributed generation units load points mismatched impedance improved R-L type droop control real powers reactive powers integral controllers virtual inductive components virtual resistive components MATLAB Simulink
	New Control Abilities on EAST PCS for Steady-State Operation 期刊论文 OAI收割 IEEE TRANSACTIONS ON PLASMA SCIENCE, 2018, 卷号: 46, 期号: 5, 页码: 1356-1360 作者: Yuan, Q. P.; Xiao, B. J.; Wu, K.; Johnson, R. D.; Huang, Y. \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2019/06/10 Long pulse operation loop voltage control PEFIT/ISOFLUX control plasma beta control radiation control
	Design of motion adjusting system for space camera based on ultrasonic motor (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China 作者: Sun Z. 收藏 \| 浏览/下载：85/0 \| 提交时间：2013/03/25 Drift angle is a transverse intersection angle of vector of image motion of the space camera. Adjusting the angle could reduce the influence on image quality. Ultrasonic motor (USM) is a new type of actuator using ultrasonic wave stimulated by piezoelectric ceramics. They have many advantages in comparison with conventional electromagnetic motors. In this paper some improvement was designed for control system of drift adjusting mechanism. Based on ultrasonic motor T-60 was designed the drift adjusting system which is composed of the drift adjusting mechanical frame the ultrasonic motor the driver of Ultrasonic Motor the photoelectric encoder and the drift adjusting controller. The TMS320F28335 DSP was adopted as the calculation and control processor photoelectric encoder was used as sensor of position closed loop system and the voltage driving circuit designed as generator of ultrasonic wave. It was built the mathematic model of drive circuit of the ultrasonic motor T-60 using matlab modules. In order to verify the validity of the drift adjusting system was introduced the source of the disturbance and made simulation analysis. It designed the control systems of motor drive for drift adjusting system with the improved PID control. The drift angle adjusting system has such advantages as the small space simple configuration high position control precision fine repeatability self locking property and low powers. It showed that the system could accomplish the mission of drift angle adjusting excellent. 2011 SPIE.
	Design of thermostat system based on Proteus simulation software (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China Han Z.; Song K. 收藏 \| 浏览/下载：39/0 \| 提交时间：2013/03/25 In order to solve the problem of precise temperature control the thermoelectric cooler (TEC) principle widely used is analyzed for the design of the whole control process and selection of control parameters and then accurate simulation model of the TEC is established in Proteus simulation software. Moreover combined with the traditional circuit simulation model the temperature control loop is designed and the response characteristics of the system are tested using an input signal similar to the unit-step function to achieve the precise temperature control. Simulation results show that the proposed control circuits can precisely convert error signal to output voltage sent to TEC model and TEC model behaves approximately like a two-pole system. The first pole starts at 20mHz and a second pole at 1Hz. 2011 IEEE.
	A brushless DC motor controller with current-loop control (EI CONFERENCE) 会议论文 OAI收割 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：31/0 \| 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.
	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 \| 浏览/下载：17/0 \| 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.