Piezo Shock Testing Systems: Repeatable High-Acceleration Pulses

Shock production and impact replication are a crucial form of testing for a wide variety of industries from material testing for aerospace to sensor characterization in smartphones. In order to generate useful and accurate data, the impulse generation needs to be highly controllable and repeatable. In order to achieve this, piezosystem jena offers finely tunable and highly repeatable high powered piezoelectric actuators designed to deliver accelerations and impulses up to 180,000 m/s 2 . The accelerations achieve are extremely repeatable, as can be seen in Figure 1 below of 10 consecutive pulse overlapped.
Figure 1: Velocity profile over 10 consecutive pulses

This is what sets the hpower high powered piezoelectric shock actuators apart from other acceleration and impulse generation systems. Utilizing a unique stack design and 200 amp amplifier, hpower piezo electric shock actuators achieve double the power density of traditional ceramics while maintaining the same precise controllability that have made piezoelectric actuators a primary technology for precision positioning. The shock impulse is delivered via a customizable input signal based on the highly linear acceleration relationship with voltage as can be seen in Figure 2. This can be also repeat also at a rate of up to 100 times per second, drastically cutting down on testing times.
Figure 2: Acceleration vs Voltage

FAQ
壓電衝擊致動器能產生多大的加速度?
最高 180,000 m/s²。憑藉獨特的疊層設計與 200 A 放大器,hpower 衝擊致動器達成傳統壓電陶瓷兩倍的功率密度,同時保有壓電致動器原有的精確可控性。
脈衝的重現性如何?
十次連續脈衝的曲線幾乎完全重疊。衝擊產生與衝擊事件重現要拿到有效的量測資料,脈衝必須高度可控且可重複,這正是這類致動器的訴求。
測試節拍能開多快?脈衝波形可以自己定嗎?
重複率最高可達每秒 100 次,能大幅縮短測試時間。衝擊脈衝經由可自訂的輸入訊號輸出,基礎是加速度與電壓之間的高度線性關係。
