This article presents an open-loop control methodology to achieve lower seating velocities (i.e. soft-landing) for solenoid-based injector systems which are widely used in automotive as fuel injection valves or gas exchange valves of internal combustion engines to spray various fluids. Physical sensors are not preferred to be used in injectors in order to increase reliability and reduce cost. As a result, it becomes impossible to control the motion of the moving parts within injectors in closed-loop. This study offers a novel sensorless position tracking approach with which impact noise can be reduced and mechanical wear and tear can be minimized. Using the Hammerstein-Wiener modeling method and a super-twisting sliding mode controller this new approach replicates the dynamics of the injector and tracks specially designed position reference signals to achieve soft landing. The effectiveness of this approach is based on the observed negligible position and velocity errors between the estimated and actual measurements. This study also offers a new way to optimize the settling time of the injector systems, while ensuring soft landing. Using the proposed approach here, the closing profiles of the reference signals were refined according to the admittance time of the solenoid actuator and the optimal closing profile signals were selected based on performance comparisons with the baseline. The results of the experiments are presented and the promising effectiveness of the proposed approach is discussed.

本文介绍了一种开环控制方法，以实现基于电磁阀的喷射系统的较低落座速度（即软着陆），该系统广泛用于汽车中作为燃料喷射阀或内燃机的气体交换阀喷射各种流体。为了提高可靠性和降低成本，在喷射器中不优选使用物理传感器。结果，就不可能在闭环中控制喷射器内的运动部件的运动。这项研究提供了一种新颖的无传感器位置跟踪方法，可以减少冲击噪声并最大限度地减少机械磨损。使用 Hammerstein-Wiener 建模方法和超扭曲滑模控制器，这种新方法复制了喷射器的动力学并跟踪专门设计的位置参考信号以实现软着陆。这种方法的有效性是基于在估计和实际测量之间观察到的可忽略的位置和速度误差。这项研究还提供了一种优化喷射器系统稳定时间的新方法，同时确保软着陆。使用此处提出的方法，根据螺线管致动器的导纳时间细化参考信号的闭合曲线，并根据与基线的性能比较选择最佳闭合曲线信号。