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Controller for a motor and a method of controlling the motor

  • US 20080095639A1
  • Filed: 10/13/2006
  • Published: 04/24/2008
  • Est. Priority Date: 10/13/2006
  • Status: Abandoned Application
First Claim
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1. A pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus being connectable to a power source and comprising:

  • a pump including an inlet connectable to the drain, and an outlet connectable to the return, the pump adapted to receive the fluid from the drain and jet fluid through the return;

    a motor coupled to the pump to operate the pump;

    a sensor connectable to the power source and configured to generate a signal having a relation to a parameter of the motor;

    a switch coupled to the motor and configured to control at least a characteristic of the motor; and

    a microcontroller coupled to the sensor and the switch, the microcontroller configured to generate a derivative value based on the signal, and to control the motor based on the derivative value.

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