The UAV power management
Power management means how to distribution the power to different
parts effective. Power management is especially important for some
mobile devices which rely on battery power. Through Reduce energy
consumption when idle assembly , a superior power management system can
extend the life of battery two or three times longer. Power management
is also called power control.
Nowadays the mainly devices of power management in the market included
PMIC and PMU. Power Management Integrated Circuits , is the circuit
that take on energy transformation, distribution , testing and other
power management functions in electronic equipment systems. It's main
duty is to identify the power amplitude of CPU , then produce short wave
moment and promote the power output stage circuit. Power Management
Integrated Circuits can be in-line package and adhesive surface package.
The range of application of Power Management Integrated Circuits is
pretty wild , develop Power Management Integrated Circuits has important
meaning for increase the performance of UAV , it also directly related
to the choices of Power Management Integrated Circuits and the need of
system.
The category of power management is pretty wide , it conclude separate
power conversion ( mainly DC to DC ) , separate power distribution and
testing , it also include the system that combine by power change and
power management. Accordingly, the power management circuits
classification also includes these aspects , such as Linear power chip ,
voltage reference chip, the switching power supply chip , LCD driver
chips , LED driver chip , a voltage detector chip , 3s 1300mah lipo battery
charge management chip , etc.If the design of the circuit requires a
high power supply noise and ripple rejection , Requirements occupied PCB
area small ( such as mobile phones and other handhold electronic
products ) , the power supply circuit does not allow the use of
inductors ( such as mobile phones ) , Power is required to have an
instantaneous calibration and self-test status output function requires
the regulator pressure drop and its low power consumption , low cost and
program simple lines , then the linear power supply is the best choice.
This kind of power include following aspects :precision voltage
reference , a high-performance , low-noise op amps , low dropout
regulator , low quiescent current. Power management Unit , is a kind of
highly integrated , portable applications for power management scheme ,
it means that put the traditional separation of certain types of power
management chips and other devices integrated within a single package of
, which can achieve higher power conversion efficiency and lower power
consumption , and a smaller number of components to accommodate the
reduced board space.
PMU role in UAV Power Management
PMU is widely used in UAV products , its main role are the following
1.It provide a stable and reliable power supply to the various components of the UAV.
2.PMU Helps reduce overall system power consumption , and by reducing the power of the component when idle , so that UAVs can have a longer battery life. For example Gens ace 3s lipo battery.
3.PMU has good signal to noise rejection and transient response ,
better able to prevent the effects of drones by the external environment
and fast transient response.
4.PMU integration features can save internal structure of space ,
contributes to miniaturization and more cost advantages as well as the
entire system power supply system of unified and orderly.
PMU UAV ground remote control unit can supply power to the various
components , ensure that all components of the normal power supply , and
can filter out interference from outside noise to a certain extent,
better guarantee the accuracy of the remote control , at the same time ,
enabling long lifetime of battery. UAV Flight Control master unit PMU
power management module assembly unit to include portions of the flight
control master , ESC power supply unit , etc. , to ensure the normal and
stable fly control unit work.
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