通过不同开关的动作来虚拟模拟常见的故障，诸如，放大器漂移、系统参数改变、伺服阀反冲以及传感器失灵等。

Some faults such as amplifier offset, parameter changes, servo valve backlash and sensor fault are seeded in a virtual way by means of different switches in Simulink.

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福州西区水厂将原有的双阀滤池改造为V型滤池，重点介绍了进水系统、滤板系统、反冲洗排水系统、滤后水系统、反冲洗系统的改造。

Uneven air distribution and other problems existing in the water distribution system of the original V-type filter with ceramic tiles were analyzed.

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本发明提供一套自力式机械装置、自动调节活动堰板、反冲阻流器、提拉阀。

This invention provides a set of self-powered mechanical device, an auto-regulating movable weir-plate, a back-flushing buffer and lift-pull valve.

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