Brushless pump motor system

Abstract

A pumping system includes a pump and a motor operatively coupled to the pump. The motor is configured to drive the pump to increase a speed of expelling spraying fluid in response to the pumping system ascending to be above a threshold altitude and to decrease the speed of expelling the spraying fluid in response to the pumping system descending to be below the threshold altitude.

What is claimed is: 
     
         1 . A pumping system comprising:
 a pump; and   a motor operatively coupled to the pump and configured to drive the pump to increase a speed of expelling spraying fluid in response to the pumping system ascending to be above a threshold altitude and to decrease the speed of expelling the spraying fluid in response to the pumping system descending to be below the threshold altitude.   
     
     
         2 . The pumping system of  claim 1 , further comprising:
 a motor speed controller configured to control the motor to generate a first rotational energy having a first torque component and a first speed component; and   a speed adjustor operatively coupled to the motor and the pump, the speed adjustor being configured to convert the first rotational energy to a second rotational energy having a second torque component and a second speed component, and the second rotational energy being provided to the pump.   
     
     
         3 . The pumping system of  claim 2 , wherein the motor speed controller includes a field oriented controller. 
     
     
         4 . The pumping system of  claim 2 , wherein the motor speed controller is integrated in the motor. 
     
     
         5 . The pumping system of  claim 2 , wherein the motor speed controller is configured to control a speed of the motor based on calculated operating characteristics of the motor. 
     
     
         6 . The pumping system of  claim 2 , wherein the speed adjustor includes at least one of a gear mechanism, a belt mechanism, or a friction mechanism, configured to convert the first rotational energy to the second rotational energy. 
     
     
         7 . The pumping system of  claim 6 , wherein the friction mechanism includes a friction wheel. 
     
     
         8 . The pumping system of  claim 1 , wherein the motor is physically coupled to the pump. 
     
     
         9 . The pumping system of  claim 1 , wherein the motor and the pump form a single unit. 
     
     
         10 . The pumping system of  claim 1 , wherein the pump is communicatively coupled to a sprayer. 
     
     
         11 . The pumping system of  claim 10 , wherein the sprayer includes a pesticide sprayer. 
     
     
         12 . The pumping system of  claim 10 , wherein:
 the sprayer includes a plurality of fluid outlets; and   the pump is configured to expel the spraying fluid from an increased number of the plurality of fluid outlets in response to the pumping system gaining altitude.   
     
     
         13 . The pumping system of  claim 1 , wherein the motor is further configured to drive the pump to increase the speed of expelling the spraying fluid in response to a travel speed of the pumping system increasing to be above a threshold speed and to decrease the speed of expelling the spraying fluid in response to the travel speed of the pumping system decreasing to be below the threshold speed. 
     
     
         14 . The pumping system of  claim 1 , wherein the motor includes at least one of a brushless motor, a brush motor, an alternating current induction motor, or a permanent magnet synchronous motor. 
     
     
         15 . The pumping system of  claim 1 , wherein the pump includes at least one of a pressure-based pump, a hydraulic pump, a diaphragm pump, a volumetric pump, or an electric mini-diaphragm pump. 
     
     
         16 . The pumping system of  claim 1 , further comprising:
 an electronic speed controller configured to control the pump.   
     
     
         17 . The pumping system of  claim 16 , wherein the electronic speed controller is configured to control at least one of a volume or a pressure of fluid pumped through the pump. 
     
     
         18 . The pumping system of  claim 1 , wherein the motor is configured to be selectively operably decoupled from the pump. 
     
     
         19 . The pumping system of  claim 1 , wherein the pumping system is configured to be carried by an unmanned aerial vehicle (UAV). 
     
     
         20 . The pumping system of  claim 19 , wherein the pumping system is attached to a central body of the UAV.