Title:
DICHOTOMY-BASED CALCULATION ALGORITHM AND SYSTEM FOR CALCULATION MODE SPEED-LIMIT VALUE
Document Type and Number:
WIPO Patent Application WO/2024/017421
Kind Code:
A2
Abstract:
Disclosed in the present invention are a dichotomy-based calculation algorithm and system for a calculation mode speed-limit value. The algorithm comprises: acquiring calculation parameters, comprising the speed Vs of a train at a start point of a deceleration area, the speed Ve of the train at an end point of the deceleration area, and the distance Sd between the start point of the deceleration area and a target position; setting intermediate variables, comprising Vst, Vet and Vt, wherein Vst is an upper limit of a speed search range, Vet is a lower limit of the speed search range, and Vt is a median of the current speed search range between Vst and Vet; initializing the intermediate variables, which involves letting Vt = (Vs + Ve)/2, Vst = Vs, and Vet = Ve; determining an initial braking speed and a final braking speed of the train, and obtaining a braking distance Sb by means of calculation, wherein the speed Vs of the train at the start point of the deceleration area is taken as the initial braking speed, and the intermediate variable Vt is taken as the final braking speed; and determining whether a braking condition is met, and if the braking condition is met, obtaining a calculation mode speed-limit value, wherein the braking condition is whether Sb is equal to Sd, or, whether the difference between Vst and Vet is less than or equal to 1. The algorithm reduces the complexity of an algorithm for a calculation mode speed-limit value, thereby improving the efficiency and accuracy of the calculation mode speed-limit value.
Inventors:
LIU ZHONGNAN (CN)
CHEN ZEHUA (CN)
JIANG QI (CN)
CHEN YI (CN)
ZHOU XUAN (CN)
CAI HANG (CN)
HAI NING (CN)
XIA MIAO (CN)
ZHOU HONGXU (CN)
CHEN ZEHUA (CN)
JIANG QI (CN)
CHEN YI (CN)
ZHOU XUAN (CN)
CAI HANG (CN)
HAI NING (CN)
XIA MIAO (CN)
ZHOU HONGXU (CN)
Application Number:
PCT/CN2023/132514
Publication Date:
January 25, 2024
Filing Date:
November 20, 2023
Export Citation:
Assignee:
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD (CN)
International Classes:
B61L27/20
Attorney, Agent or Firm:
BEIJING IPLING INTELLECTUAL PROPERTY LAW FIRM (CN)
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