In technique there is a fairly Wide Class of devices, among them systems of automatic control, regulation and monitoring which require applying certain dynamic loads at the gear shafts. The necessity in these technical devices which automatically simulate some given regime becomes especially acute when complex lines of testing equipment and instruments for various applications are developed. This paper considers the feasibility of creating simulators of dynamic loads, as well as mathematical models describing them in different regimes (static or dynamic) and their versatile technical implementations based in the results of their Studies. In the process on their elaboration, design and final tests the requirements for compactness, high efficiency and possibility of using accessory equipment available in the USSR had been taken Into consideration. The D.C. electric gear motors fed by thyristor converters and monitored by a special automatic line were used as loading mechanises (benches). The appropriate monitoring signal (sinusoidal, triangular, rectangular, casual is sent by a personal computer or by a special generator.


The System was designed for the loads in the range of 0-25Nm, 25-250Nm, 250-500Nm. For the second and third modifications of electric gear motors permanent magnets fabricated of magnetic materials of high coercive force are used Instead of bus winding. This makes It possible to increase the specific power and obtain a high ratio of the moment and the current in relation to their nominal values. Application of high moment electric gear motors appears to be the lost prospective. The above motors retain the advantages of ordinary D.C. electric motors, such as the high thermal time constant (possibility of considerable electric overloads All this likes it possible to use motors of a relatively small power In the loading capacity for the sake of obtaining great moments.

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