Combined test system of rail transit vehicle control device

The invention discloses a combined test system of a rail transit vehicle control device. The combined test system of the rail transit vehicle control device comprises a to-be-tested vehicle control device part, a signal conditioning part, a bus converting unit, a vehicle control bus and a simulated system part, wherein the to-be-tested vehicle control device part comprises a plurality of preset vehicle control devices for controlling a whole vehicle; the vehicle control devices are connected through the vehicle control bus according to a vehicle loading network topology; the bus converting unit is used for converting a signal on the vehicle control bus into a bus signal capable of being recognized by the simulated system part; the signal conditioning part is used for converting an external interface signal of the vehicle control device corresponding to the to-be-tested vehicle control device part into a control signal capable of being recognized by the simulated system part; the simulated system part is used for simulating control object information of the to-be-tested vehicle control device part and an external operation environment of a to-be-tested vehicle. The system combined test of different vehicle control devices is realized, the testing adequacy is realized, the debugging risk is reduced, the debugging period is shortened, and the product reliability is improved.