为了控制AWJ穿透工件的均匀性，有必要设计一种能够在线检测AWJ穿透深度的传感系统。结果表明，磨料水射流产生的工件法向力可以作为射流穿透深度的指标，力反馈控制有望成为调节射流穿透深度的有效方法。

TO CONTROL THE UNIFORMITY OF THE AWJ PENETRATION INTO THE WORKPIECE IT IS NECESSARY TO DEVISE A SENSING SYSTEM THAT CAN ON-LINE SENSE THE DEPTH OF AWJ PENETRATION. IT WAS SHOWN THAT THE WORKPIECE NORMAL FORCE GENERATED BY AN ABRASIVE WATERJET COULD BE USED AS THE INDICATOR OF THE DEPTH OF JET PENETRATION, AND THAT A FORCE-FEEDBACK CONTROL HOLDS PROMISE AS AN EFFECTIVE WAY TO REGULATE THE DEPTH OF JET PENETRATION.