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US 2006/0074512 A1Published application
Feed rate controller
AssigneeOne World Technologies Limited
InventorsPhilip Minalga, David Peot
Life of this patent
Estimating the term…
Abstract
A feed rate control system may provide feedback to the power tool operator that may assist the operator to obtain consistently high quality output. The feed rate control system may also automatically output a feed rate control signal, optionally influenced by the operating mode of the power tool. In a planer, for example, the feed rate control system may execute different control techniques depending on whether the planer is in ‘finish’ mode or ‘dimension’ mode.
Claims24
A feed rate control system comprising:
- a magnetic field sensor displaced from a motor current line and positioned to receive a magnetic field established by a motor current in the motor current line;
- a controller coupled to the magnetic field sensor through a sensor output line;
- a memory coupled to the controller, the memory comprising:
- 2 control mode flag establishing a manual mode or an automatic mode for the power tool;
- and instructions for execution by the controller comprising:
- instructions for determining a sensor output on the sensor output line;
- and
- instructions for automatically outputting a feed rate control signal based on the sensor output, when the control mode flag indicates the automatic mode;
- and
- a display responsive to the sensor output.
7 more elements
A feed rate control system comprising:
- a non-invasive motor current sensor comprising a motor current sensor output;
- a display responsive to a signal on the motor current sensor output;
- and
- control circuitry coupled to the current sensor, the control circuitry operable to determine an operating mode and apply one of multiple feed rate control techniques selected based on the operating mode.
1 more element
A control system comprising:
- a motor current sensor displaced from a motor current line;
- a feed rate display responsive to the current sensor and comprising an in-range indicator and an overcurrent indicator;
- and
- control circuitry coupled to the current sensor, the control circuitry operable to output a feed rate control signal based on a signal output by the motor current sensor.
1 more element
Dependencies are inferred from the claim text.