Abstract
This paper deals with clamping force simulation and experimental result of the Electro Mechanical Brake (EMB) for the High-Speed-Train (HST). Three phase Surface Permanent Magnet Synchronous Motor (SPMSM) is applied to the clamping force control of EMB. At the initial development stage, Proportional Integral (PI) current control under synchronous d-q axis frame was applied to the SPMSM torque control. In addition, an anti-windup controller, which is advantageous for fast current tracking, is proposed to improve the torque output. Matlab/Simulink simulation results were compared with the experimental results measured by the clamping force sensors of the EMB test rig. The experimental results were verified compared to the brake design specification of the High-Speed Electric Multiple Unit-430 Experimental (HEMU-430X) train.
Highlights
Due to the problems of hydraulic brakes with respect to the maintenance of oil and oil pressure lines, as well as the efficiency of hydraulic pump operation in conventional brake systems in the automotive field, Electro Mechanical Brake (EMB) is drawing more attention [1,2].At the initial stage of the development of EMB, a wedge brake structure was used for the generation of maximum clamping force in the caliper under a low input voltage of 12 Vdc
There have been numerous studies on motor control methods that address clamping force control, including Proportional Integral (PI) controller using basic control of current and speed under vector control [4], control of clamping force using a sliding mode controller [5], adaptive sliding mode control using a neural network to estimate [6], estimation methods of clamping force considered as gear friction [7], estimated control of clamping force using the rotor position due to impossible applications of force sensors based on the spatial constraints of the driving part [8,9], observer-based sensor-less robust force control methods [10], and fault diagnosis and tolerant control techniques based on the failure of the sensor [11,12,13,14,15,16]
Results of the EMBofsystem results from the test rig are compared with the Matlab/Simulink simulation results in order results from the EMB test rig are compared with the Matlab/Simulink simulation results in order to Figure shows the installation of the test rig for the performance test
Summary
Due to the problems of hydraulic brakes with respect to the maintenance of oil and oil pressure lines, as well as the efficiency of hydraulic pump operation in conventional brake systems in the automotive field, EMB is drawing more attention [1,2]. Force hadwas beenapplied tested by the pneumatic braking part with the caliper, and was this mechanical torque with transmission structure used ball screw-type transmission, which applied in urban railway vehicles electric mechanical systems [17]. This mechanical is different from thestructure spur gearused andball camshaft-type paper.from the spur gear torque transmission screw-type transmission transmission, used whichinisthis different. The output clamping force of the caliper,using the braking force of the EMB system,and andthe decelerating results are compared with experimental results measured the clamping forcesimulation, sensors of the performance are predicted in an analytical approach usingby a Matlab/Simulink the test rig. Results showed that the of brake design specification of HEMU-430X can be satisfied, ensuring the possibility of applying EMB system to trains
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