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Manifold Sensors and Hydraulic Pressure Sensors Quiz

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Manifold Sensors and Hydraulic Pressure Sensors Quiz

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Questions and Answers

What component de-energizes the PSV torque motor to enable backup hydraulic power?

The REU and MCE de-energize the PSV torque motor.

What does the PSV do when de-energized?

The PSV connects the pump extend and retract control ports to the ram via the MSV and blocks hydraulic system pressure from the EHSV.

How is positional control provided in the electrical backup state?

By comparing the commanded ram position to the actual ram position.

What component demodulates the main ram LVDT signal to determine ram position?

The REU demodulates the main ram LVDT signal. Signup and view all the answers

What does the REU generate based on the position error?

The REU generates an error signal based on the difference between commanded and actual ram position. Signup and view all the answers

What component does the REU command based on the error signal?

The REU applies an electrical command current to the MCE based on the error signal. Signup and view all the answers

What does the MCE command based on the REU input?

The MCE commands the electrical motor driving the pump proportional to the error signal. Signup and view all the answers

How does the pump motor velocity change based on the MCE command?

The pump motor velocity increases proportionally (within limits) to the MCE command current. Signup and view all the answers

What determines which cylinder ports get connected to the pump inlet/outlet?

The polarity of the pump motor command determines which cylinder ports (extend or retract) get connected. Signup and view all the answers

What state provides damping in case of hydraulic/electrical power loss?

The EBHA damped bypass state provides damping in case of hydraulic/electrical power loss. Signup and view all the answers