公开(公告)号：US20200309102A1

公开(公告)日：2020-10-01

申请号：US16372145

申请日：2019-04-01

Applicant: Johnson Controls Technology Company

Inventor： Kirk P. Henderson ,  John T. Pierson ,  Julie Ahl ,  Kevin A. Weiss

IPC: F03G7/06 ,  F24F13/14

Abstract: An actuator system includes a shaft hub having a shaft and one or more rotation arms coupled to the shaft, one or more shape memory alloy springs coupled to the one or more rotation arms, and as a voltage source configured to apply a voltage to the one or more shape memory alloy springs. The voltage causes the one or more shape memory alloy springs to change in size or shape, thereby applying a force to the one or more rotation arms and causing the shaft hub to rotate. The actuator system also includes a processing circuit configured to receive an indication of a desired incremental rotation for the shaft hub and apply a voltage corresponding to the desired incremental rotation to the one or more shape memory alloy springs, causing the shaft and the shaft hub to rotate about a central axis.

公开(公告)号：US10975851B2

公开(公告)日：2021-04-13

申请号：US16372145

申请日：2019-04-01

Applicant: Johnson Controls Technology Company

Inventor： Kirk P. Henderson ,  John T. Pierson ,  Julie Ahl ,  Kevin A. Weiss

IPC: F03G7/06 ,  F24F13/14

Abstract: An actuator system includes a shaft hub having a shaft and one or more rotation arms coupled to the shaft, one or more shape memory alloy springs coupled to the one or more rotation arms, and as a voltage source configured to apply a voltage to the one or more shape memory alloy springs. The voltage causes the one or more shape memory alloy springs to change in size or shape, thereby applying a force to the one or more rotation arms and causing the shaft hub to rotate. The actuator system also includes a processing circuit configured to receive an indication of a desired incremental rotation for the shaft hub and apply a voltage corresponding to the desired incremental rotation to the one or more shape memory alloy springs, causing the shaft and the shaft hub to rotate about a central axis.