40m Suspension Electronics Benjamin Abbott California Institute of Technology 10/18/01 G010385-00-R.
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Transcript of 40m Suspension Electronics Benjamin Abbott California Institute of Technology 10/18/01 G010385-00-R.
10/18/01 Benjamin Abbott G010385-00-R
Requirements
Digital Suspension should be as Advanced LIGO-like as possible.Coil Drivers should be sufficient to move the 1.3Kg optics with a dynamic range on order 30m p-p in length, and 1.5mrad p-p in angle.Filtering should meet 10-20 m/Hz noise requirement.
10/18/01 Benjamin Abbott G010385-00-R
Modeling
Modeling done in SimulinkIntended to prove that small optic controllers are sufficient for 40m core optics.Noise suppression was evaluated.
10/18/01 Benjamin Abbott G010385-00-R
Yaw Controller Model
Increased Gain
Removed Coil Driver Compensation
10/18/01 Benjamin Abbott G010385-00-R
Closed Loop Position Response
Pseudo-critically damped position response
10/18/01 Benjamin Abbott G010385-00-R
Closed Loop Pitch Response
Pseudo-critically damped position response