Adaptive train model
First Claim
1. A method for predicting train consist reactions to specific stimuli using a system including at least one measurement sensor located on a train consist, a data base, and a computer, the train consist including at least one locomotive and at least one railcar, said method comprising the steps of:
- collecting sensor data as the consist is moving;
determining a consist force balance utilizing the sensor data and the computer;
determining a set of consist coefficients using the computer; and
predicting train consist kinetic characteristic values using the consist force balance and the set of consist coefficients including;
determining an acceleration prediction;
determining a speed after one minute prediction using the acceleration prediction; and
determining a shortest braking distance prediction using the acceleration prediction.
2 Assignments
0 Petitions
Accused Products
Abstract
An adaptive train model (ATM) for predicting train consist reactions to specific stimuli using a system including at least one measurement sensor located on the train consist, a data base, and a computer. The ATM collects sensor data as the consist is moving, determines a consist force balance utilizing the sensor data and the computer, determines a set of consist coefficients using the computer, and predicts train consist kinetic characteristic values using the consist force balance and the set of consist coefficients.
41 Citations
43 Claims
-
1. A method for predicting train consist reactions to specific stimuli using a system including at least one measurement sensor located on a train consist, a data base, and a computer, the train consist including at least one locomotive and at least one railcar, said method comprising the steps of:
-
collecting sensor data as the consist is moving; determining a consist force balance utilizing the sensor data and the computer; determining a set of consist coefficients using the computer; and predicting train consist kinetic characteristic values using the consist force balance and the set of consist coefficients including; determining an acceleration prediction; determining a speed after one minute prediction using the acceleration prediction; and determining a shortest braking distance prediction using the acceleration prediction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 42)
-
-
22. A system for predicting reactions of a train consist to specific stimuli, said system comprising at least one measurement sensor located on the train consist, a data base, and a computer, the train consist comprising at least one locomotive and at least one railcar, said system configured to:
-
collect sensor data as the consist is moving; determine a consist force balance utilizing the sensor data and said computer; determine a set of consist coefficients using said computer; and predict train consist kinetic characteristic values using the consist force balance and the set of consist coefficients wherein the system is configured to; determine an acceleration prediction; determine a speed after one minute prediction using said acceleration prediction; and determine a shortest braking distance prediction using said acceleration prediction. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
-
-
43. A method for determining a force balance for a train consist using a system including at least one measurement sensor located on the train consist, a data base, and a computer, the train consist including at least one locomotive and at least one railcar, the railcar including at least one brake shoe, said method comprising the steps of:
-
monitoring a force applied to the consist utilizing the at least one measurement sensor; generating force data with respect to the force applied; communicating the force data to the computer; determining rolling forces according to the equation F(rf)=M(Kr+Krvv(t)), determining aerodynamic forces according to the equation F(af)=Kav(t)2, determining elevation caused forces according to the equation F(ef)=M(Ke1E1(t)+Ke2E2(t)+Ke3E3(t)+Ke4E4(t)), determining braking forces caused by direction changes according to the equation F(dbf)=M(KpCp(t)+K1C1(t)); determining consist brake forces caused by application of the at least one brake shoe according to the equation F(baf)=Kb1B1(t)+Kb2B2(t)+Kb3B3(t)+Kb4B4(t); determining brake application dragging force using a fast building pressure model according to the equation;
Bff=min(0,max(1,(T+3.86950758*T2+0.23164628*T3)/(16367.9101+111.652789*T+27.61345048*T2−
0.0026229*T3)))Bcf;determining brake application dragging force using a slow building pressure model according to the equation;
Bfs=min(0,max(1,(Ts+2.00986206*Ts2+0.81412194*Ts3)/(0.00067603+169.361303*Ts+8.95254599*Ts2+0.58477705*Ts3);determining brake release using a fast release model according to the equation;
Rff=min(0,max(1,(t+3.86950758*t2+0.23164628*t3)/(16367.9101+111.652789*t+27.61345048*t2−
0.0026229*t3)))Bcf,determining brake release using a slow release model according to the equation;
Rfs=min(0,max(1,(t+2.00986206*t2+0.81412194*t3)/(0.00067603+169.361303*t+8.95254599*t2+0.58477705*t3)))Bcsdetermining dynamic brake force according to the equation F(dbf)=KdD(t), determining traction force; and determining a final solution according to the equation;
F(t)=M(Kr+Krvv(t))+Kav(t)2+
MKe1E1(t)+MKe2E2(t)+MKe3E3(t)+MKe4E4(t)+
MKpCp(t)+MK1C1(t)+
Kb1B1(t)+Kb2B2(t)+Kb3B3(t)+Kb4B4(t)+
Kr1R1(t)+Kr2R2(t)+Kr3R3(t)+Kr4R4(t)+KdD(t)+KtT(t)wherein F(rf) relates to the rolling forces of the train; M is the total train mass; Kr is the corrective factor for friction of the train; Krv is the dynamic corrective factor for friction of the train; v(t) is the speed of the train as a function of time; F(af) relates to the aerodynamic forces of the train; Ka is the corrective factor for the effect of the aerodynamic friction; F(ef) relates to the elevation caused forces of the train; Ke1 is the corrective factor for the effect of the elevation change on a first segment of the train; E1(t) is the elevation function relating to the first segment; Ke2 is the corrective factor for the effect of the elevation change on a second segment of the train; E2(t) is the elevation function relating to the second segment; Ke3 is the corrective factor for the effect of the elevation change on a third segment of the train; E3(t) is an elevation function relating to the third segment; Ke4 is the corrective factor for the effect of the elevation change on a fourth segment of the train; E4(t) is an elevation function relating to the fourth segment; F(dbf) relates to the dynamic braking force of the train; Kp is the corrective factor for the weight increase of the train; Cp(t) is the braking effect caused by the weight increase; K1 is the corrective factor for the effect of the lateral friction of the train; C1(t) is the braking effect caused by the lateral friction; F(baf) relates to the applied braking forces of the train; Kb1 is the brake function coefficient relating to a first segment of the train; B1(t) is the brake function relating to the first segment; Kb2 is the brake function coefficient relating to a second segment of the train; B2(t) is the brake function relating to the second segment; Kb3 is the brake function coefficient relating to a third segment of the train; B3(t) is the brake function relating to the third segment; Kb4 is the brake function coefficient relating to a fourth segment of the train; B4(t) is the brake function relating to the fourth segment; Bff is the braking force of the train for fast building pressure; T is the traction force of the train; Bcf is the brake cylinder force of the train; Bfs is the braking force of the train for slow building pressure; Ts is the traction force for the slow building pressure; Bcs is the brake cylinder force of the train; Rff relates to the fast release force of the train; t is the time; Rfs relates to the slow release force of the train; F(dbf) relates to the dynamic brake force; Kd is the corrective factor for the effect of the dynamic brake application; D(t) is the dynamic brake force of the train; F(t) is the force balance of the train; Kr1 is the corrective factor for friction in the first segment of the train; R1(t) is the release function of the first segment; Kr2 is the corrective factor for friction in the second segment of the train; R2(t) is the release function of the second segment; Kr3 is the corrective factor for friction in the third segment of the train; R3(t) is the release function of the third segment; Kr4 is the corrective factor for friction in the fourth segment of the train; R4(t) is the release function of the fourth segment; and Kd is the corrective factor for the effect of the dynamic brake application.
-
Specification