מערכות וארכיטקטורה

The South-Pointing Chariot as a Mechanical Direction-Preservation Engine

תוכן האובייקטים עצמם כתוב באנגלית ועדיין לא תורגם.

תקופה ומקור

China, associated with Ma Jun in the third century CE, with fuller Song-period descriptions of later constructions

מה הוא נבנה לעשות

To keep a pointer aimed at a fixed world direction while the vehicle carrying it turns.

כיצד המנגנון פועל

Vehicle yaw follows from the difference between left and right wheel rotation. A correcting mechanism produces an equal and opposite rotation of the pointer, so the world-frame direction stays invariant. Several mechanical families satisfy this; some use selective engagement during fixed-radius turns, modern replicas often a differential.

קלט

Left and right wheel rotation, and one externally set initial direction.

טרנספורמציה

Differencing the two wheel rotations to recover yaw, then negating it at the pointer.

פלט

A direction held constant in the world frame for as long as the mechanism tracks without slip.

מה מבוסס בראיות

שחזור: קריאה סבירה, כשקיימים שחזורים מתחרים ברשומות.

מה הוא מדגים

That this is not magnetism. The direction must be given to the machine once and is then propagated mechanically, so error accumulates - and that historical existence and exact mechanism are separate questions.

כל המנגנונים