Method and apparatus for welding with voltage control
AssigneeIllinois Tool Works Inc.
InventorBrian A. Schwartz
Life of this patent
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Abstract
A method and apparatus for providing welding-type power includes an input circuit, a switched circuit connected to the input circuit, and an output circuit connected to the switched circuit. A controller controls the system output in response to a setpoint and an output feedback signal. A first gain is used to control the output at start up, and a second gain is used to control the output during steady-state welding. The first gain is greater than the second gain.
Claims47
A method of controlling a welding-type power supply, comprising:
- controlling the output in response to a setpoint and an output feedback signal;
- using a first gain to control the output at start up;
- and
- using a second gain to control the output during steady-state welding, wherein the first gain has a first magnitude and the second gain has a second magnitude, and the first magnitude is greater than the second magnitude.
A welding-type power supply controller, comprising:
- means for controlling the output in response to a setpoint and an output feedback signal;
- means for providing a first gain to control the output at start up;
- and
- means for providing a second gain to control the output during steady-state welding, wherein the first gain has a first magnitude and the second gain has a second magnitude, and the first magnitude is greater than the second magnitude.
A welding-type power supply controller, comprising a control module having a setpoint input and a feedback input, and a control output, wherein the control module includes a first gain module, a second gain module, and a gain select module, wherein the gain select module selects the first gain modules at start up and selects the second gain module to control the output during steady-state welding, wherein the first gain module has a first gain magnitude and the second gain module has a second gain magnitude, and the first magnitude is greater than the second magnitude.
A welding-type power supply, comprising:
- an input circuit;
- a switched circuit connected to the input circuit;
- an output circuit connected to the switched circuit;
- and
- control means for controlling the switched circuit, including means for controlling the output in response to a setpoint and an output feedback signal, means for providing a first gain to control the output at start up, and means for providing a second gain to control the output during steady-state welding, wherein the first gain has a first magnitude and the second gain has a second magnitude, and the first magnitude is greater than the second magnitude.
A welding-type power supply, comprising:
- an input circuit;
- a switched circuit connected to the input circuit;
- an output circuit connected to the switched circuit;
- and
- a controller, comprising a control module having a setpoint input and a feedback input, and a control output, wherein the control module includes a first gain module, a second gain module, and a gain select module, wherein the gain select module selects the first gain modules at start up and selects the second gain module to control the output during steady-state welding, wherein the first gain module has a first gain magnitude and the second gain module has a second gain magnitude, and the first magnitude is greater than the second magnitude.
Dependencies are inferred from the claim text.