Differences

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--- electrical [2026/01/16 04:19] – created olt
+++ electrical [2026/04/08 02:07] (current) – w1xm
@@ Line 10: / Line 10: @@
 The bidirectional nature of the power supply allows the motor drives to regenerate power back into the grid when decelerating the dish. In case mains power becomes disconnected or the power supplies fail while the dish is in motion, there is also a Roboteq SR5K100V25R V1.2 active shunt, which clamps excess voltage by dumping power into a bank of power resistors in the event of the bus voltage spiking. See the datasheet {{ :sr5k100v25r_datasheet.pdf | saved here }}.
+==== Motor Control ====
+The motor controllers are custom, see [[https://github.mit.edu/w1xm/RadomeMotorController|this Github]]. They sense position using Celera Motion/Zettlex IncOder contactless absolute magnetic angle encoders, which replace the functionality of the [[https://en.wikipedia.org/wiki/Synchro|synchros/selsyns]] that were originally present. The IncOders are semi-custom with part number [[https://www.celeramotion.com/zettlex/product/incoder-58mm/|INC-6-58.060-181001-SPI1-AC2-12-S]]. See the datasheet {{ ::incoder_product_guide_mini_rev_4.11.8.pdf | here }}.
+The Factor 202 industrial Raspberry Pi computer in the radome rack communicates with the motor controllers over CANbus using this [[https://www.inno-maker.com/product/usb-can/|isolated USB CANbus adapter]].