Motor torque control to reduce possibility of centrifuge rotor accidents
AssigneeKendro Laboratory Products, LP
InventorDavid Carson
Life of this patent
Estimating the term…
Abstract
Controlling the torque of a motor by driving a centrifuge rotor connected to the motor; increasing a motor torque of the motor to a specified level; detecting revolutions per minute of the centrifuge rotor; adjusting the motor torque based on detected revolutions per minute; decreasing the motor torque to a constant torque over a range of revolutions per minute; and increasing the motor torque when the detected revolutions per minute are outside of the range.
Claims22
A method of controlling the torque of a motor comprising the steps of:
- driving a centrifuge rotor connected to the motor;
- increasing a motor torque of the motor to a specified level;
- and
- adjusting the motor torque according to a windage torque limit of the centrifuge rotor to limit the kinetic energy of the centrifuge rotor.
A system for controlling the torque of a motor comprising:
- means for driving a centrifuge rotor connected to the motor;
- means for increasing a motor torque of the motor to a specified level;
- and
- means for adjusting the motor torque to equal the windage torque limit of a centrifuge rotor at a speed , or kinetic energy level, that does not cause the proven containment limit of the centrifuge to be exceeded.
A device that controls the torque of a motor comprising:
- a shaft connected to the motor;
- a centrifuge rotor coupled to said shaft, the motor driving said shaft thereby moving said centrifuge rotor;
- a control unit in communication with the motor, said control unit increasing a motor torque of the motor to a specified level, and adjusting the motor torque to equal the windage torque limit of a centrifuge rotor at a speed that does not cause the proven containment limit of the centrifuge to be exceeded.
A method for controlling the torque of a motor comprising the steps of:
- driving a centrifuge rotor connected to the motor;
- increasing a motor torque of the motor to a specified level;
- detecting revolutions per minute of the centrifuge rotor;
- adjusting the motor torque based on detected revolutions per minute;
- decreasing the motor torque to a constant torque over a range of revolutions per minute;
- and
- increasing the motor torque when the detected revolutions per minute are outside of the range.
Dependencies are inferred from the claim text.