功能安全学习(1)——安全架构之Fail-safe 1.什么是fail-safe架构? 系统及其主要组成部分,如传感器(Sensor)、控制器(Processing)、执行器(Actuator)以及通讯和供电,由各种诊断功能监控,如果发生故障,系统将关闭(shut/cut off)使系统进入安全状态。 2.系统如何安全设计? 传感器:需要对传感器上的信号进行合理性校验。对...
An actuator comprising: a first piston moved between first and second positions by pressurized fluid; and a second piston moved by the pressurized fluid to arm a safety system that returns the first piston from the second position to the first position when pressure in the pressurized fluid ...
FAIL SAFE ACTUATOR 优质文献 相似文献 参考文献 引证文献Servo-actuator with fail safe means The present invention provides a servo-actuator capable of operating in both the Fail Safe and Fail Operate modes. In the Fail Safe mode, a pretensioned spring member moves a jet pipe in the servo-valve...
Belimo CESIM Non Fail-Safe Damper Actuator产品文档说明书
An actuator is usable in a damping system, which may be a component of an airside system, waterside system, building management system, or HVAC system. The actuator is coupled to a damper and may open and close the damper. The damper selectively seals a duct to prevent spreading of gas, ...
High quality 220VAC Fail Safe Electric Actuator factory from China, China's leading 220VAC Fail Safe Electric Actuator product market, With strict quality control Fail Safe Electric Actuator factories, Producing high quality Fail Safe Electric Actuator p
The bearing member includes a fusible material which melts in another predetermined temperature range to enable the force exerted by the energy storage device to overcome the bearing member and to move the controlled member to a fail-safe position....
United States Patent US4643390 Note: If you have problems viewing the PDF, please make sure you have the latest version ofAdobe Acrobat. Back to full text
The bearing member includes a fusible material which melts in another predetermined temperature range to enable the force exerted by the energy storage device to overcome the bearing member and to move the controlled member to a fail-safe position....
The brake (10) is in a normal operation mode when the first actuator device (300) is above the threshold internal pressure, the plate (342) then being at its inboard end position. 展开 收藏 引用 批量引用 报错 分享 全部来源 求助全文 Google Patents 相似文献 参考文献Fail-safe/surge arrester...