公开(公告)号：US20140333180A1

公开(公告)日：2014-11-13

申请号：US14358617

申请日：2012-11-07

Applicant: CSIR

Inventor： Edward Francis Williams ,  Philip Wayne Loveday

IPC: H02N2/02 ,  H02N2/04

CPC classification number: H02N2/023 ,  H02N2/043

Abstract: THIS invention relates to a piezoelectric actuation device and more particularly but not exclusively, to a piezoelectric actuation device with three piezoelectric actuator sets. The device includes a first clamp arrangement being displaceable between an engaged position and a disengaged position and a second clamp arrangement being displaceable between an engaged position and a disengaged position. The device also includes an actuation arrangement being displaceable between a first condition and an inverse second condition; and force transmission means for transmitting a force to a load applied thereto, with the force transmission means being coupled to the actuation arrangement. The device is characterized in that the actuation arrangement displaces the force transmission means when it is displaced from the first condition to the second condition, and also displaces the same force transmission means when it is displaced from the second condition to the first condition within a single actuating cycle.

Abstract translation: 本发明涉及一种压电致动装置，更具体地但不排他地涉及一种具有三个压电致动器组的压电致动装置。 该装置包括可在接合位置和脱离位置之间移动的第一夹紧装置，以及可在接合位置和脱离位置之间移动的第二夹具装置。 该装置还包括可在第一状态和反向第二状态之间移动的致动装置; 以及用于将力传递到施加到其上的负载的力传递装置，其中力传递装置联接到致动装置。 该装置的特征在于，当致动装置从第一状态移动到第二状态时，致动装置移位力传递装置，并且当其在单个状态下从第二状态移动到第一状态时也移动相同的力传递装置 致动循环。

公开(公告)号：US20180011063A1

公开(公告)日：2018-01-11

申请号：US15711670

申请日：2017-09-21

Applicant: CSIR

Inventor： Philip Wayne Loveday

IPC: G01N29/34 ,  G01N29/44 ,  G06F17/50 ,  G01N29/04

CPC classification number: G01N29/34 ,  G01N29/04 ,  G01N29/043 ,  G01N29/4472 ,  G01N2291/042 ,  G01N2291/048 ,  G01N2291/102 ,  G01N2291/106 ,  G01N2291/2623 ,  G06F17/5009

Abstract: A system for monitoring the condition of elongate structural elements, for example, railway rails, and a method of designing and manufacturing the system is disclosed. The method includes identifying and selecting suitable modes of propagation and signal frequencies that can be expected to travel large distances through an elongate structural element; designing a transducer that will excite the selected mode at the selected frequency; numerically modelling the transducer as attached to the elongate structural element; validating the transducer design by analysing a harmonic response of the selected mode of propagation to excitation by the transducer, and manufacturing one or more transducers for use in the system.

公开(公告)号：USD753061S1

公开(公告)日：2016-04-05

申请号：US29509603

申请日：2014-11-19

Applicant: CSIR

Designer： Philip Wayne Loveday