Variable-Speed Speed-Up Mechanism Preventing Output Shaft Reverse Rotation

The control device calculates command rotational speeds for both the constant-speed and variable-speed motors that preemptively prevent reverse rotation of the output shaft. By computing rotational speeds that maintain forward rotation or controlled stopping without reversal, the system applies counter-action before reverse rotation can occur, thus preventing the harmful effect while maintaining operational simplicity.

The control device continuously monitors the actual rotational speeds of both motors and compares them with commanded values. Based on this feedback, the control device adjusts the command rotational speeds dynamically to prevent reverse rotation of the output shaft, ensuring reliability while maintaining ease of operation through automated control.

The system merges the functions of two motors - the constant-speed motor provides baseline rotational force to prevent reverse rotation, while the variable-speed motor adjusts its contribution based on actual operational needs. This combination allows the system to maintain reliability without requiring the variable-speed motor to consume excessive energy by running at high speeds continuously.

The control device dynamically changes the rotational speed parameter of the variable-speed motor based on real-time conditions. Rather than maintaining a constantly high rotational speed to prevent reverse rotation, the system adjusts the motor speed parameter to the minimum necessary level, thus preventing reverse rotation while minimizing energy consumption.

The control device performs multiple functions: it calculates command rotational speeds for both motors, monitors actual rotational speeds, compares commanded versus actual values, and adjusts control parameters to prevent reverse rotation. By consolidating these multiple functions into a single control device, the system prevents reverse rotation while minimizing the increase in overall device complexity.

The system replaces complex mechanical reverse rotation prevention mechanisms (such as mechanical locks or one-way clutches) with a computational control approach. The control device uses calculations and electronic control signals to prevent reverse rotation, substituting mechanical complexity with electronic/control system simplicity.