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- Title
A Practical Deceleration Control Method, Prototype Implementation and Test Verification for Rail Vehicles.
- Authors
Ma, Tianhe; Tian, Chun; Wu, Mengling; Zhou, Jiajun; Liu, Yinhu
- Abstract
Currently, the theoretical braking force control mode, characterized by actual deceleration as an unstable open-loop output, is the most widely used brake control mode in trains. To overcome the shortcomings of non-deceleration control modes, a deceleration control mode is proposed to realize the closed-loop control of train deceleration. First, a deceleration control algorithm based on parameter estimation was derived. Then, the deceleration control software logic was designed based on the existing braking system to meet the engineering requirements. Finally, the deceleration control algorithm was verified through a ground combination test bench with real brake control equipment and pneumatic brakes. The test results show that the deceleration control can make the actual braking deceleration of the train accurately track the target deceleration in the presence of disturbances, such as uncertain brake pad friction coefficients, line ramps, vehicle loads and braking force feedback errors, as well as their combined effects, and does not affect the original performance of the braking system. The average deceleration in the deceleration control mode is relatively stable, and the control error of instantaneous deceleration is smaller.
- Subjects
ACCELERATION (Mechanics); AUTOMOBILE brakes; LOGIC design; BRAKE systems; PARAMETER estimation; PNEUMATIC control; REQUIREMENTS engineering
- Publication
Actuators, 2023, Vol 12, Issue 3, p128
- ISSN
2076-0825
- Publication type
Article
- DOI
10.3390/act12030128