A stepless adjustable inertia simulation control device for simulating locomotive operating conditions
A technology for simulating operating conditions and inertia, which can be used in railway vehicle testing and other directions to solve problems such as inability to simulate variable loads.
Active Publication Date: 2015-11-18
BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG
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However, the flywheel device also has some shortcomings. Since the moment of inertia of the flywheel device is a fixed value, the load applied to the locomotive is also fixed. Therefore, only fixed loads can be simulated, and variable loads cannot be simulated.
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[0015] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0016] like figure 1 As shown, in this embodiment, the whole system includes contact grid 1, locomotive 2, test bench 3,
[0017] One end of the test bench 3 is provided with a track on which the locomotive 2 runs, and a test bench rail wheel 31 is installed on the edge of the track, and the other end is sequentially provided with a cardan shaft 32, a torque sensor 33, a synchronous speed-up gearbox 34, a variable frequency motor 35 and a flywheel 36 , the output end of the variable frequency motor 35 is connected to the input end of the flywheel 36, and the flywheel 36 is used to load the locomotive 2 with a fixed load when the locomotive 2 starts. A contact grid 1 is erected on the upper end of the test bench 3 to provide energy for the locomotive. The contact grid 1 is preferably arranged obliqu...
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The invention discloses a stepless adjustable inertia simulation control device for simulating operation conditions of a locomotive. The control device comprises a test board, a locomotive and a contact network, wherein a rail on which the locomotive runs is arranged at one end of the test board; frequency conversion motors and flywheels are mounted at the other end of the test board in sequence; when the locomotive is started, the flywheels are used for loading the locomotive; the contact network is erected at the upper end of the test board; when the locomotive is operated on a rail of the test board in testing, one end of the locomotive is in contact with the contact network; a parameter input device, a database and a frequency converter CPU (central processing unit) are also arranged; acceleration time corresponding to different inertias is stored in the database; and a program for controlling output torque according the given acceleration time is arranged in the frequency converter CPU; the acceleration time is selected automatically from the database according to input simulation traction load and simulation finial speed, the time parameter is transmitted to the frequency converter CPU, and the frequency converter CPU controls the output torque according to the given acceleration time, controls the angular accelerations of the frequency conversion motors, and changes the load inertia J to simulate the varying load.
Description
technical field [0001] The invention relates to an adjustable inertia control device, in particular to a stepless adjustable inertia simulation control device for simulating the operating conditions of a locomotive. Background technique [0002] At present, when a locomotive is tested on a rolling test stand, there is usually no load when the locomotive is first started, that is, the locomotive can only be loaded after the variable frequency motor rotates for a period of time and has a certain speed, so it cannot be a real simulation The working conditions of the locomotive running, the locomotive test does not have great reliability. [0003] Recently, a flywheel device has been developed. This flywheel is installed on the test bench. When the locomotive starts to rotate, it can load the locomotive, which truly simulates the starting condition of the locomotive. However, the flywheel device also has some disadvantages. Since the moment of inertia of the flywheel device is ...
Claims
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IPC IPC(8): G01M17/08
Inventor 喻贵忠刘广丹黎莎黎英豪
Owner BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG