Methods and systems are disclosed for pumping fluids at desired average
flow rates by applying a predetermined force to a pump chamber and pulsing
an outlet valve of the pump chamber to deliver a fluid therefrom. In some
embodiments, pump chambers are provided within removable pumping
cartridges that are constructed and configured to be coupled to a reusable
pump drive component. In other embodiments, the pumping cartridges include
multiple pump chambers, which pump chambers are operated so that a pump
flow rate of one pump chamber is a predetermined fraction of the pump flow
rate of another pump chamber within the pumping cartridge.
