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 selflocking 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 .
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 .