Blog: Build your own Hangglider and Paraglider Winch
Design of sled
Servo motor
The servo motor is a key component in the design and provides a simple, low-tech solution for achieving absolute synchronous positioning.
Read more about the 660W servo motor here.
Libraries are available in Codesys to convert a 32-bit positioning reference signal in the PLC program into the pulse and direction signals at the PLC output.
See the PLC program for more details.
The servo itself regenerates a small amount of energy when changing direction. Therefore, a capacitor must be added to the supply to avoid overvoltage.
A 100V, 10mF capacitor is optimal:
RS Components – Electrolytic Capacitor
The gear from Aliexpress is a great solution for converting the high-speed output of the servo motor into a slow-running shaft.
With a gear ratio higher than 20:1, it does not regenerate power, which is advantageous when powering the servo from power supplies.
However, efficiency decreases as the gear ratio increases.
The standard oil is very pure, as shown in the graph, but you can improve efficiency by switching to a higher-quality oil. The oil should have high viscosity, GL4 additives, and EP additives that are suitable for red metals. For example:
Castrol Revival EP 180