An Overall System Delay Compensation Method for IPMSM Sensorless Drives in Rail Transit Applications

2021 ◽  
Vol 36 (2) ◽  
pp. 1316-1329
Author(s):  
Hang Zhang ◽  
Weiguo Liu ◽  
Zhe Chen ◽  
Ningfei Jiao
Keyword(s):  
Compensation Method ◽  
Rail Transit ◽  
System Delay ◽  
Delay Compensation ◽  
Sensorless Drives

A Time-Delay Compensation Method for IPMSM Hybrid Sensorless Drives in Rail Transit Applications

2019 ◽  
Vol 66 (9) ◽  
pp. 6715-6726 ◽  
Author(s):  
Hang Zhang ◽  
Weiguo Liu ◽  
Zhe Chen ◽  
Shuai Mao ◽  
Tao Meng ◽  
...  
Keyword(s):  
Time Delay ◽  
Compensation Method ◽  
Rail Transit ◽  
Delay Compensation ◽  
Time Delay Compensation ◽  
Sensorless Drives

Force-based delay compensation for hardware-in-the-loop simulation divergence of 6-DOF space contact

2017 ◽  
Vol 233 (1) ◽  
pp. 151-165
Author(s):  
Qian Wang ◽  
Chenkun Qi ◽  
Feng Gao ◽  
Xianchao Zhao ◽  
Anye Ren ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Dynamic Models ◽  
Contact Process ◽  
Three Dimensional ◽  
Compensation Method ◽  
Degree Of Freedom ◽  
Hardware In The Loop ◽  
Delay Compensation ◽  
Measurement Delay ◽  
Six Degree Of Freedom

The contact process of a space docking device needs verification before launching. The verification cannot only rely on the software simulation since the contact dynamic models are not accurate enough yet, especially when the geometric shape of the device is complex. Hardware-in-the-loop simulation is a choice to perform the ground test, where the contact dynamic model is replaced by a real device and the real contact occurs. However, the Hardware-in-the-loop simulation suffers from energy increase and instability since time delay is unavoidable. The existing delay compensation methods are mainly focused on a uniaxial or three-dimensional contact. In this paper, a force-based delay compensation method is proposed for the hardware-in-the-loop simulation of a six degree-of-freedom space contact. A six degree-of-freedom dynamic model of the spacecraft motion is derived, and a six degree-of-freedom delay compensation method is proposed. The delay is divided into track delay and measurement delay, which are compensated individually. Experiment results show that the proposed delay compensation method is effective for the six degree-of-freedom space contact.

Detector random time delay compensation method for X-ray pulsar observation

Optik ◽  
2017 ◽  
Vol 149 ◽  
pp. 430-438 ◽  
Author(s):  
Dapeng Zhang ◽  
Wei Zheng ◽  
Yidi Wang ◽  
Yong Chen ◽  
Weiwei Cui ◽  
...  
Keyword(s):  
Time Delay ◽  
Compensation Method ◽  
Random Time ◽  
Delay Compensation ◽  
X Ray ◽  
Time Delay Compensation
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