hardware in the loop simulation *-in-the-loop approaches HIL Hardware-in-the-Loop (HIL) Hardware-in-the-loop testing ("HIL") Hardware-in-the-Loop (HIL) Hardware-in-the-Loop (HIL) Hardware-in-the-Loop 硬件在环 Hardware-in-the-Loop English Hardware-in-the-Loop (HIL) HIL (Hardware-in-loop) simulation Hardware-in-the-loop (HIL) real-time simulation Hardware in the loop testing Hardware in the Loop