Low-power consumption hardware-in-loop test bench and test method for vehicular automatic transmission

The invention discloses a low-power consumption hardware-in-the-loop test bench for a vehicular automatic transmission. The low-power consumption hardware-in-the-loop test bench comprises a target machine, a host machine, a data acquisition unit and a hardware unit, wherein the hardware unit comprises a driving motor, an automatic transmission and a load motor which are connected sequentially; a simulink vehicular transmission model is established in the host machine, and during running, the simulink vehicular transmission model is compiled by utilizing real-time workshop (RTW) and is downloaded to the target machine automatically; the target machine simulates a disconnection stage, a sliding friction stage or a closure stage of a clutch by setting simulation parameters of the vehicular transmission model; and the data acquisition unit acquires running data of the automatic transmission in different stages by a sensor to be outputted and saved. The test bench can be used as a development and verification platform of a control strategy and a control algorithm, and can simulate different transmission systems by setting different coefficients kt, so the transfer power of the test bench is reduced; and due to the adoption of the low-power driving motor and the low-power load motor, the cost and running cost are reduced.