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Heavy-load locomotive slip form extreme value search optimum adhesion control system and method

A heavy-duty locomotive, sticky control technology, applied in the control system, vector control system, motor generator control, etc.

Active Publication Date: 2017-11-24
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a heavy-duty locomotive adhesion control system and method, combined with a sliding mode extremum search algorithm, to solve the problem of optimal adhesion control of heavy-duty locomotives

Method used

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  • Heavy-load locomotive slip form extreme value search optimum adhesion control system and method
  • Heavy-load locomotive slip form extreme value search optimum adhesion control system and method
  • Heavy-load locomotive slip form extreme value search optimum adhesion control system and method

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Embodiment 1

[0039] figure 1 It is a schematic flow chart of the heavy-duty locomotive adhesion control module in Embodiment 1, and the method includes the following steps, including:

[0040] Step 1, design the superhelical sliding mode controller, and output the control torque T m ;

[0041]

[0042] In the formula, J m is the moment of inertia of the motor, R g is the wheel transmission ratio, J is the moment of inertia of the wheel set, F μ is the traction force generated by the traction motor, M is the weight of the heavy-duty locomotive, F d is the running resistance, is the derivative of the best creep velocity estimate, γ 1 , γ 2 is the parameter to be designed for the controller, and σ is the design sliding surface;

[0043] Step 2, the torque T is controlled by the output m , load torque and the feedback torque signal calculated by the sticking observer make differential input to the controller;

[0044] Step 3, the coordinate transformation unit according to the ...

Embodiment 2

[0060] The heavy-haul locomotive sliding mode extremum search optimal sticking control method in this embodiment is used to implement the heavy-haul locomotive sticking control described above. figure 2 It is a schematic diagram of the overall structure according to Embodiment 2 of the present invention, specifically including: a three-phase power supply 1, a rectifier circuit 2, a three-phase bridge inverter circuit 3, a signal acquisition unit 4, a permanent magnet synchronous motor PMSM5, a coordinate transformation unit 6, a voltage Space vector SVPWM 7, controller 8, heavy-duty locomotive adhesion control module 9, driver handle torque setting 10, wheel speed and vehicle speed signal acquisition unit 11.

[0061] Specifically, the rectification circuit is powered by a three-phase power supply, and the output of the rectification circuit is used as the input of the three-phase bridge inverter circuit. The signal acquisition unit collects the high current and high voltage ...

Embodiment 3

[0063] This embodiment is a supplementary description based on the first and second embodiments.

[0064] image 3 It is a diagram of the heavy-duty locomotive adhesion control module in Embodiment 3 of the present invention, and the heavy-duty locomotive adhesion control module includes: load torque and adhesion coefficient observer, super-helical sliding mode controller, and sliding mode extremum search unit.

[0065] Specifically, the load torque and adhesion coefficient observers, according to the dq axis current i d i q signal, input to the traction motor torque calculation unit to calculate the motor electromagnetic torque T e . Speed ​​sensor and motor position observation unit according to dq axis current i d i q signal, the output motor angular velocity ω m . The load torque observer is based on the motor angular velocity ω m and motor electromagnetic torque T e , calculate the load estimated torque Stiction Coefficient Observer Estimates Torque from Load ...

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Abstract

The invention discloses a heavy-load locomotive slip form extreme value search optimum adhesion control system and method. Heavy-load locomotive adhesion control can be achieved. A heavy-load locomotive adhesion control module comprises a superhelix slip form controller, a differential tracker, a load rotating torque and an adhesion coefficient observer and a slip form extreme value search unit so as to achieve dynamic closed-loop control over the rotating torque of a heavy-load locomotive traction motor. On the basis of locomotive motor model vector control, on the basis of the slip form extreme value search method, the adhesion coefficient observer is designed, a wheeltrack adhesion coefficient is estimated in real time, the locomotive is made to run near the best adhesion point under the external complex environment, the power of a traction motor is effectively brought into play, the optimum adhesion control over the heavy-load locomotive is achieved, and the heavy-load locomotive slip form extreme value search optimum adhesion control system and method can be widely applied to the best adhesion control occasion of the heavy-load locomotive.

Description

technical field [0001] The invention provides a heavy-duty locomotive adhesion control system and method, and in particular relates to a heavy-duty locomotive sliding mode extremum search optimal adhesion control method. Background technique [0002] With the continuous increase of my country's freight transport volume, heavy-haul railway transport is playing an increasingly important role. Compared with passenger trains, heavy-duty railway transportation requires heavy-duty locomotives to provide greater traction and braking forces. The traction and braking forces of locomotives are realized by the adhesion between the locomotive wheelset and the contact surface between the rails. If the external environment changes suddenly, it will lead to a decrease in the utilization rate of the adhesion, and abnormal adhesion may occur. The traction force of the locomotive will be greater than the adhesion force, and the locomotive will idling, resulting in the inability to fully utili...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/20B61C15/08
CPCH02P21/0007H02P21/20B61C15/08Y02T10/72
Inventor 赵凯辉李燕飞张昌凡何静李祥飞李鹏殷童欢
Owner HUNAN UNIV OF TECH
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