Request for proposal. To find an optimum system composition the complex project planning
is conducted. As a rule, this process begins from the request for proposal, which clarifies the
types of motors, gears, and power converters as well as the system organisation to obtain
the highest reliability, best dynamic and static properties, minimum dimensions or loss, and
acceptable cost. An equipment type has to satisfy the required technical and economic indices.
To start the project planning, the load data, such as mass, speed, forces, frequency, operating
times, geometry of wheels and shafts as well as the performance conditions are collected.
Using these data, the required amount of power in regard to efficiency is calculated, and