LAPSE:2022.0062
Published Article
LAPSE:2022.0062
Position Control Study on Pump-Controlled Servomotor for Steam Control Valve
Guishan Yan, Zhenlin Jin, Tiangui Zhang, Penghui Zhao
October 13, 2022
In steam turbine control and actuation, the steam control valve plays a key role in operability and reliability. The electrohydraulic regulating system for the steam control valve, usually called the servomotor, needs to be reliable and high performing under nonlinear excitation interference in actual conditions. Currently, electrohydraulic servo valve control technology is widely used in servomotors. Although this technology has good control performance, it still has some technical defects, such as poor antipollution ability, low energy efficiency, large volume size, and limited installation space. Aiming at the abovementioned technical shortcomings of electrohydraulic servo valve control technology, a servomotor-pump-hydraulic cylinder volume control scheme is proposed in this paper, forming a pump-controlled servomotor for the steam control valve. By analyzing the working principle of the pump-controlled servomotor position control in the steam control valve, the mathematical model of a pump-controlled servomotor for the steam control valve is established. The sliding mode variable structure control strategy is proposed, and the variable structure control law is solved by constructing a switching function. To verify the performance of the proposed control method, experimental research was conducted. The research results show that the proposed sliding mode variable structure control strategy has a good control effect, which lays the theoretical and technical foundation for the engineering application and promotion of pump-controlled servomotors for steam control valves and helps the technical upgrade and product optimization of steam turbines.
Keywords
position control, pump-controlled servomotor, sliding mode variable structure, steam control valve, steam turbine
Suggested Citation
Yan G, Jin Z, Zhang T, Zhao P. Position Control Study on Pump-Controlled Servomotor for Steam Control Valve. (2022). LAPSE:2022.0062
Author Affiliations
Yan G: School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China; Heavy-Duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province, Qinhuangdao 066004, China
Jin Z: School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China; Heavy-Duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province, Qinhuangdao 066004, China
Zhang T: Heavy-Duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province, Qinhuangdao 066004, China
Zhao P: Heavy-Duty Intelligent Manufacturing Equipment Innovation Center of Hebei Province, Qinhuangdao 066004, China
Journal Name
Processes
Volume
9
Issue
2
First Page
221
Year
2021
Publication Date
2021-01-25
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr9020221, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2022.0062
This Record
External Link

doi:10.3390/pr9020221
Publisher Version
Download
Files
[Download 1v1.pdf] (6.3 MB)
Oct 13, 2022
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
140
Version History
[v1] (Original Submission)
Oct 13, 2022
 
Verified by curator on
Oct 13, 2022
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2022.0062
 
Original Submitter
Mina Naeini
Links to Related Works
Directly Related to This Work
Publisher Version