THEMA:

Hello Fellow Submariners,
Could you please help me with an electronics design.I have put together a piston ballast tank with a custom made hollow threaded shaft brushless motor with a Timken encoder mounted on the end of the motor.The motor shaft at the rear of the motor protrudes outwards at 13mm for the encoder disk mount.
I need a controller to connect to this encoder to operate the piston tank proportionally .

John, there are mainly two different Kinds of Piston Tank Controllers available in Germany:
Norbert Brüggen manufactures Controllers with an analogue input for a linear potentiometer. Check out the last Pics im my Piston Tank Thread. There you can see how it can work.
The other Controllers are Hall Sensor driven.
All of them have just a digital Output, made with Relais Contacts or MOSFET.

What Output Signal is generated by the Timken Encoders?

Check out this datasheet: www.datasheetcatalog.org/datasheet2/f/0c...rz7edsyqil8zow7y.pdf
This Chip ist used by Aveox. I designed a sensor driven BLDC Controller with it some years ago. Its analog Input and closed loop Feature might be the answer you are looking for.

In Germany this Chip ist very hard to get and VERY expensive, maybe not so in US

John, i received your mail with the Datasheet.
The Output of your Sensor is two Channel Quadratur encoded. Unfortunately you cant use it with my Circuit.
I think you have to use something else