Transmission Ratio

Transmission Ratio

 

one of the major features that define mechanisms, including rotational drives. The transmission ratio is defined as the ratio of the angular velocities or frequencies of rotation of the components. This usually refers to the ratio of the angular velocity of the driving component to the angular velocity of the driven component: u = ω12.

The concept of the transmission ratio is applicable both to simple mechanisms (pairs of gears, worm drives, belt drives) and complex multicomponent mechanisms (multiple reduction gears, planetary gears, gearboxes). The transmission ratio of gear drives connected in series is equal to the product of the transmission ratios of these drives.

In addition to the concept of the transmission ratio, the closely related concept of the gear ratio is widely used, especially with respect to gear trains.

References in periodicals archive ?
The transmission ratio of the planetary transmission is given by relation (2), while the multiplication ratio, as the reverse of the previous one, by relation (3):
The total transmission ratio of the gear may also be subject to the optimization problem providing as goal functions: maximum start-up acceleration, maximum transmitted power, correlation of the mechanical impedances, minimum duration of the positioning cycle (Dolga, et al.
75[degrees] Transmission ratio variation, [DELTA]u -0.
The mechanisms built on the basis of planetary transmissions through synchronous belts are similar in terms of cinematic those with toothed wheels, according the formulas of transmission ratio (fig.
For comparison is used value of efficiency [eta] to its dependences on the transmission ratio of reducer (from the generator of waves h to a gear b at a motionless separator e).
1,a and b (consisting of an involute internal gear pair 1-2 and of a synchronic coupling 2-3), the condition of obtaining the transmission ratio can be written as follows (Diaconescu & Duditza, 1994,a and b):
Tmi] represents momentum of friction on the motor side, T momentum of load, and N transmission ratio.
Modelling simulations, and optimisation of electric vehicles for analysis of transmission ratio selection.
The required value of the variator transmission ratio [k.
To eliminate the inconvenience of a mechanism with constant transmission ratio (hard starting to small wind and overspeed to strong) a mechanism is proposed with automatic variable transmission ratio depending on input conditions (wind speed).
The ratio of the number of magnet pairs on the inner cylinder to the number on each output shaft determines the transmission ratio.

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