Adjustment System for a Hydraulic Actuator |
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| 申请号 | US15617481 | 申请日 | 2017-06-08 | 公开(公告)号 | US20180142711A1 | 公开(公告)日 | 2018-05-24 |
| 申请人 | Claverham Limited; | 发明人 | Paul BREWER; Reg RAVAL; Andrew WALTON; | ||||
| 摘要 | The present disclosure relates to an adjustment system a method for compensating for temperature variations in a spool valve. The spool valve and adjustment system may be parts in a duplex hydraulic actuator. The adjustment device comprises a spring, a pivot point, and a shape memory alloy (SMA) device. The spring and SMA device are disposed on either side of the pivot point to hold the pivot point in a first position. The SMA device is configured to change size in response to a temperature change so as move the pivot point to a second location. This may eliminate force fight in the duplex hydraulic actuator by preventing asynchronous activation of the spool valves due to thermal expansion within the spool valves. | ||||||
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