Additional Info glossary
Dynamic Force
This is the force generated by a positioner during its movement along its axis. It is the force that is required to overcome friction and inertia, and to accelerate the device. For positioners that move masses against gravity or against external forces, this property is sometimes referred to as lifting or pushing capability.
Dynamic Torque
This is the torque generated by a rotary positioner( rotators and goniometers) during its movement around the rotation axis specified. For positioners that rotate masses against gravity or against external inertia, this property is sometimes referred to as lifting or pushing capability. Please note that the moment of inertia that can be induced by a non-centered load on the positioner has to be considered as a significant factor when accelerating with positioners.
Holding Force
This is the force that a positioner inherently applies maintaining its static position along its axis, even in the absence of an external force or respectively also when powered down. The self-locking mechanism is a main advantage of piezo slip stick inertia drives. In general, the holding force is higher than the dynamic force of a positioner. The holding force is sometimes referred to as the static force.
Holding Torque
This is the torque that a rotary positioner( rotators and goniometers) inherently applies maintaining its static position around the rotation axis specified, even in the absence of an external force or respectively also when powered down. The self-locking mechanism is a main advantage of piezo slip stick inertia drives. In general, the holding torque is higher than the dynamic torque of a positioner. The holding torque is sometimes referred to as the static torque.
Figure 3: Standard ECSxyz-configuration: two x-positioners( one rotated by 90 °) and one additional x-positioner mounted vertically on a L-bracket.
Merge Nanopositioning Stages to Multi-Dimensional Systems
The modular concept of attocube positioners in combination with a consequent use of similar mounting patterns enables the assembly of multi-axis positioning units composed of( several) different types of nanopositioning stages. By merging several positioning units with distinct travel ranges and motion options, motor assemblies with up to six degrees of freedom can be built.
Cross Mounting Rules
Following general rules apply for building multi-dimensional setups:
• a positioner with a lower number should not be used to support one with a larger number, e. g. an ANPx51 should not carry an ANPz101.
• cross-mounting between two differently sized models( e. g. a 51 series positioner on top of a 101 positioner) may necessitate an adapter plate( see adapter plates overview in accessories section on our webpage).
• all bearing-based positioners( ANPx3 * 1 series) can be mounted on a L-bracket which enables vertical positioning with loads corresponding to the specified dynamic force for the respective positioner.