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Title: Active control of hydraulic pump noise. Project Goal: Reduce pump noise through active reduction of pump vibration. What is the problem?: Hydraulic pumps are a major source of noise in a hydraulic system. When a Pump works hard, the pistons inside vibrate and emit a loud buzzing noise. Engineers are interested in methods to make pumps quiet. Active noise control is a method of using a computer processor to calculate a signal and apply it to the pump controls to cancel the measured noise from the pump. How to solve the problem: To use active noise control on a pump, we measure noise using sensors and calculate a second signal using the Active Control Processor. The Control Valve reads the noise canceling signal and directs fluid to move a Control Actuator attached to the pump. The actuator vibrates the pump in an opposite way which reduces the buzzing noise from the pistons.
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