摘要:
A duplexer and an electronic device includes a transmission filter 10 connected between a common terminal Ant and a transmission terminal Tx, a reception filter 20 connected between the common terminal and a reception terminal Rx; and a capacitor 40 connected in parallel with either the transmission filter 10 or the reception filter 20 between at least two terminals out of the common terminal Ant, the transmission terminal Tx and the reception terminal Rx.
摘要:
A motor driving control apparatus in the embodiment includes : a first controller configured to control powering and regeneration of a motor; a second controller configured to control the first controller; and an assistant unit configured to activate the second controller in a stop state, when a counter electromotive force caused by the motor, which is rotated without control by the first controller, satisfies a predetermined condition, before a power-on instruction for the motor driving control apparatus is made or in a state where the power-on instruction for the motor driving control apparatus is not made.
摘要:
A motor (105) driving apparatus includes a driving unit configured to drive a motor (105) according to a torque inputted by a rotation input from a human being; and a controller configured to control driving of the driving unit according to a relationship between an accumulated value of first amounts that correspond to the rotation input from the human being and an accumulated value of second amounts that correspond to rotation of a rotating object driven by the motor (105).
摘要:
A controller for driving a motor has: an input part that receives, from each of two brake sensors, a signal indicating a corresponding brake is in an ON state or a signal indicating that the brake is in an OFF state; a control coefficient computing part that increases a control coefficient relative to a regeneration target value along a first slope when a first signal indicating only one of the brakes is in an ON state is received from the input part, the control coefficient computing part increasing the control coefficient along a second slope when a second signal indicating both brakes are in an ON state is received from the input part, the second slope rising faster than the first slope; and a control part controlling driving of the motor in accordance with the regeneration target value and the control coefficient computed by the control coefficient computing part.
摘要:
A piezoelectric element (10) includes first internal electrodes (12) and second internal electrodes (13, as well as piezoelectric ceramic layers (11) that are made of ceramics and arranged between the first internal electrodes and second internal electrodes. Manganese is present relatively more abundantly in the areas (11b) of the piezoelectric ceramic layers adjacent to the first internal electrodes and second internal electrodes, compared to at the centers of the piezoelectric ceramic layers. Insulation performance of the piezoelectric element is kept from dropping over the course of use.