Dynamic performance is drastically improved by using direct drive due to the very high control loop bandwidth that can be achieved on the overall system. The direct coupling of the load and position feedback to the motor has the advantage of eliminating all phenomena that limit the dynamic performance on non direct driven machines. Eliminating long-time drift, elasticity, and backlash is a huge advantage for machine performance and lifetime.
Torque motor applications have a wide range of dynamic performance requirements. Depending on the specifics of a system’s duty cycle, the peak torque, continuous torque, or both will drive the selection of a motor. An application with a light duty cycle that requires high peak torque for a short period of time will typically utilize an air cooled motor like ETEL’s TML series. As the continuous torque requirement increases so will the temperature of the motor. The integrated water-cooling capability of the ETEL TMB and TMK motor provides an efficient means of temperature control ensuring high dynamic performance that can be maintained even for the most demanding applications.