Drop table with motor feedback
AssigneeNabholz Construction Corporation
InventorsMark Raymond Potter, Stephen Harold Schumacher
Life of this patent
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Abstract
A drop table can provide optimized lifting operations by employing motor feedback to generate and adapt a lifting strategy that controls lifting parameters. A lifting module may be connected to a first motor and consist of a lifting controller. The first motor can be mechanically coupled to a first lifting column by a first transmission and to a second lifting column by a second transmission. A service component can be lowered with the first and second lifting columns by activating the first motor that provides motor feedback. A lifting strategy can be generated in response to the motor feedback and subsequently executed to move the service component to a servicing position.
Claims19
A method comprising:
- connecting a lifting module a first motor, the lifting module comprising a lifting controller, the first motor mechanically coupled to a first lifting column by a first transmission and to a second lifting column by a second transmission;
- lowering a service component with the first and second lifting columns by activating the first motor;
- detecting a weight of the service component with the lifting module in response to frequency feedback from the first motor;
- and
- generating a lifting strategy with the lifting controller in response to the frequency feedback of the first motor, the lifting strategy prescribes operational lifting parameters for the first and second lifting columns to vertically displace the service component with a predetermined sequence of events;
- detecting, with the lifting controller, an unexpected deviation from the predetermined sequence of events in response to the frequency feedback of the first motor;
- and
- performing, with the lifting controller, at least one alteration to an operational lifting parameter of the first motor in accordance with the lifting strategy to correct the deviation of the predetermined sequence of events.
A method comprising:
- connecting a lifting module a first motor, the lifting module comprising a lifting controller, the first motor mechanically coupled to a first lifting column by a first transmission and to a second lifting column by a second transmission;
- generating a lifting strategy with the lifting controller, the lifting strategy prescribing operational lifting parameters for the first and second lifting columns to vertically displace the service component with a predetermined center-of-gravity for the service component;
- lowering a service component with the first and second lifting columns by activating the first motor;
- determining a deviation from the predetermined center-of-gravity with the lifting controller in response to a frequency feedback from the first motor;
- executing at least one alteration to an operational lifting parameter of the first motor in accordance with the lifting strategy to correct the deviation of the predetermined center-of-gravity while moving the service component to a servicing position;
- detecting a deviation in lifting parameters expected in the lifting strategy;
- and
- altering the lifting strategy to correct the detected deviation.
Dependencies are inferred from the claim text.