Electric tool and control method
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsWenjing Lu, Yanqing Xu
Life of this patent
Estimating the term…
Abstract
A power tool includes a mounting portion for optionally mounting one working accessory of multiple working accessories; a motor configured to drive the working accessory mounted on the mounting portion; and a control device configured to control rotation of the motor according to a target control program matching the working accessory. The control device is configured to, when the motor is in a pre-starting stage, estimate rotational inertia of the motor and identify the working accessory currently mounted to the mounting portion based on the rotational inertia.
Claims20
A power tool, comprising:
- a mounting portion for optionally mounting one working accessory of a plurality of working accessories;
- a motor configured to drive the working accessory mounted on the mounting portion;
- and
- a control device configured to control rotation of the motor according to a target control program matching the working accessory and configured to, when the motor is in a pre-starting stage, estimate an electrical parameter of the motor and identify the working accessory currently mounted to the mounting portion based on the estimated electrical parameter.
A mower, comprising:
- a blade mounting portion for optionally mounting one blade cutting assembly of a plurality of blade cutting assemblies;
- a motor configured to drive the blade cutting assembly mounted on the blade mounting portion;
- and
- a control device configured to control rotation of the motor according to a target control program matching the blade cutting assembly mounted to the blade mounting portion and configured to, when the motor is in a pre-starting stage, estimate an electrical parameter of the motor and identify the blade cutting assembly currently mounted to the blade mounting portion based on the estimated electrical parameter.
A control method of a power tool comprising a mounting portion for optionally mounting one working accessory of a plurality of working accessories, a motor configured to drive the working accessory mounted on the mounting portion, and a control device connected to the motor and configured to control rotation of the motor;
- wherein the control method comprises:
- in response to receiving a power-on signal of the motor, controlling, by the control device, the motor to be in a pre-starting stage, estimating rotational inertia of the motor, identifying the working accessory currently mounted to the mounting portion based on the estimated rotational inertia, and controlling the rotation of the motor according to a target control program matching the working accessory.
Dependencies are inferred from the claim text.