Backward motion commonly exists in the stick-slip linear piezoelectric actuator, resulting in deterioration of the output performance and limiting their applications. To solve the problem, a stick-slip linear piezoelectric actuator with suppressed backward motion, achieved using an active-locking mechanism (ALM) with two mechanisms, is proposed in this paper. One mechanism involves stick-slip driving, while the other actively suppresses backward motion by clamping the slider during the backward driving process through efficient control. A prototype actuator was designed and manufactured to verify the feasibility of this method, and an experimental system was established to obtain the detailed parameters. Also, to verify the feasibility and effectiveness of the suppression effect on backward motion of the proposed actuator, the output performance of the traditional stick-slip actuator and the actuator with the ALM were compared. Based on the results, we demonstrate that the maximum output speed and maximum output force of the prototype are 2.26 mm s⁻¹ and 1.6 N under a voltage of 100 V, respectively.

粘滑线性压电致动器普遍存在向后运动，导致输出性能恶化，限制了其应用。为了解决这个问题，本文提出了一种抑制向后运动的粘滑线性压电执行器，该执行器使用具有两种机制的主动锁定机构 (ALM) 实现。一种机制涉及粘滑驱动，而另一种机制通过有效控制在向后驱动过程中夹紧滑块来主动抑制向后运动。设计并制造了原型执行器以验证该方法的可行性，并建立了实验系统以获得详细参数。此外，为了验证所提出的执行器向后运动抑制效果的可行性和有效性，比较了传统粘滑执行器和带有 ALM 的执行器的输出性能。根据结果​​，我们证明原型的最大输出速度和最大输出力为 2.26 mm s^-1和 1.6 N 分别在 100 V 的电压下。