The subject matter of this specification can be embodied in, among other things, an electric motor health monitoring system that includes an estimator module configured to model one or more estimated motor values of an electric motor based on one or more motor control parameters and one or more motor control states, a non-transitory computer readable medium, and a fault detector module configured to (1) provide a fault signal based on the modeled one or more estimated motor values of the motor and a predetermined parameter threshold value, and (2) modify the non-transitory computer readable medium based on the fault signal.

The subject matter of this specification can be embodied in, among other things, an electric motor health monitoring system that includes an estimator module configured to model one or more estimated motor values of an electric motor based on one or more motor control parameters and one or more motor control states, a non-transitory computer readable medium, and a fault detector module configured to (1) provide a fault signal based on the modeled one or more estimated motor values of the motor and a predetermined parameter threshold value, and (2) modify the non-transitory computer readable medium based on the fault signal.

A band saw having a touch sensor. An example band saw includes a housing, a motor, a first handle including a first trigger configured to be actuated by a user, a second handle including a touch sensor, and a controller connected to the motor, the first trigger, and the touch sensor. A first hand of the user may be detected on the first handle based on actuation or de-actuation of the first trigger. The touch sensor is configured to detect a second hand of the user on the second handle. The controller is configured to determine that the touch sensor is actuated by the user, determine that the first trigger is actuated by the user after the touch sensor is actuated by the user, and drive, in response to the touch sensor being actuated and the first trigger sensor being actuated after the touch sensor is actuated, the motor.

A band saw having a touch sensor. An example band saw includes a housing, a motor, a first handle including a first trigger configured to be actuated by a user, a second handle including a touch sensor, and a controller connected to the motor, the first trigger, and the touch sensor. A first hand of the user may be detected on the first handle based on actuation or de-actuation of the first trigger. The touch sensor is configured to detect a second hand of the user on the second handle. The controller is configured to determine that the touch sensor is actuated by the user, determine that the first trigger is actuated by the user after the touch sensor is actuated by the user, and drive, in response to the touch sensor being actuated and the first trigger sensor being actuated after the touch sensor is actuated, the motor.

A speed control assembly for an appliance includes a bracket and a cam that is slidably coupled with the bracket and has an engagement edge. A lever is operably coupled with the cam and is configured to move the cam along the bracket. A slider is fixedly coupled with the bracket and a magnet is disposed adjacent the engagement edge. A ball bearing that is in magnetic communication with the magnet is configured to be selectively engaged with one of a plurality of retention spaces that are defined by the engagement edge of the cam. A sensor is configured to detect a position of the magnet.

A speed control assembly for an appliance includes a bracket and a cam that is slidably coupled with the bracket and has an engagement edge. A lever is operably coupled with the cam and is configured to move the cam along the bracket. A slider is fixedly coupled with the bracket and a magnet is disposed adjacent the engagement edge. A ball bearing that is in magnetic communication with the magnet is configured to be selectively engaged with one of a plurality of retention spaces that are defined by the engagement edge of the cam. A sensor is configured to detect a position of the magnet.

The subject matter of this specification can be embodied in, among other things, an electric motor health monitoring system that includes an estimator module configured to model one or more estimated motor values of an electric motor based on one or more motor control parameters and one or more motor control states, a non-transitory computer readable medium, and a fault detector module configured to (1) provide a fault signal based on the modeled one or more estimated motor values of the motor and a predetermined parameter threshold value, and (2) modify the non-transitory computer readable medium based on the fault signal.

The subject matter of this specification can be embodied in, among other things, an electric motor health monitoring system that includes an estimator module configured to model one or more estimated motor values of an electric motor based on one or more motor control parameters and one or more motor control states, a non-transitory computer readable medium, and a fault detector module configured to (1) provide a fault signal based on the modeled one or more estimated motor values of the motor and a predetermined parameter threshold value, and (2) modify the non-transitory computer readable medium based on the fault signal.

One aspect of the present disclosure includes an electric work machine including a motor, a first manual switch, a second manual switch, and a control circuit. The control circuit rotates the motor in accordance with a first control system, based on (i) the first manual switch being manually operated and (ii) the second manual switch being within a first region. The control circuit stops the motor, based on (i) the first manual switch not being manually operated and/or (ii) the second manual switch being within a second region. The control circuit rotates the motor in accordance with a second control system, based on (i) the first manual switch being manually operated and (ii) the second manual switch being within a third region.

One aspect of the present disclosure includes an electric work machine including a motor, a first manual switch, a second manual switch, and a control circuit. The control circuit rotates the motor in accordance with a first control system, based on (i) the first manual switch being manually operated and (ii) the second manual switch being within a first region. The control circuit stops the motor, based on (i) the first manual switch not being manually operated and/or (ii) the second manual switch being within a second region. The control circuit rotates the motor in accordance with a second control system, based on (i) the first manual switch being manually operated and (ii) the second manual switch being within a third region.