Abstract: A control method for an electro-mechanical brake including a piston configured to push a brake pad toward a wheel disk through driving of a motor, the control method for an electro-mechanical brake including: detecting positions of the piston and current values of the motor while braking is performed; detecting piston position-based estimated braking force values based on the detected positions of the piston; detecting current-based estimated braking force values based on the detected current values of the motor; determining that a state of the brake pad has changed from an initial state to another state when the piston position-based estimated braking force values and the current-based estimated braking force values are different from each other; determining whether a thickness or physical property of the brake pad has changed when determining that the state of the brake pad has changed from the initial state to the other state; setting a new home position by compensating for a preset home position when dete

Abstract: An electro-mechanical brake including a piston configured to push a brake pad toward a wheel disk through driving of a motor, the electro-mechanical brake including: a current detection unit configured to detect an actual current value flowing through the motor; a position detection unit configured to detect an actual piston position of the piston; an effective value extraction unit configured to filter the actual current value and extract an effective value from the actual current value; and an actual braking force value detection unit configured to detect an actual braking force value based on a first map, a second map, the actual piston position, and the effective value, wherein the first map is a map in which a correlation relationship between a current flowing through the motor, a position of the piston, and a braking force in a first state is converted into data, the second map is a map in which the current flowing through the motor and a factor in the first state are converted into data, and the factor

Abstract: An electro-mechanical brake includes a piston driven by a motor to push a brake pad toward a wheel disc. The brake also includes: a current detection unit for current flowing through the motor; a piston position detection unit; a map generating unit and a braking force value detection unit. When power is applied to the vehicle at start-up, the first map comprises data correlating current flowing through the motor, position of the piston, and braking force, the second map comprises data of is a map of the current flowing through the motor and a factor are converted into data with reference to the first state, and the factor is a ratio of the braking force to the current flowing through the motor. A braking force value detection detects braking force based on piston position, a current value in the motor, the first map, and the second map.

Abstract: An electro-mechanical brake control method and apparatus are disclosed. An embodiment of the present disclosure provides a method of controlling an electro-mechanical brake(EMB), using a controller, wherein the electro-mechanical brake includes a current sensor and a motor rotation angle sensor, the method comprising: receiving a target clamping force generated based on a pedal stroke value; generating a clamping force feedback in response to the target clamping force and calculating a force error by comparing the clamping force feedback with the target clamping force; measuring an stroke of a piston using the motor rotation angle sensor; controlling the motor so that the stroke of the piston is located at a contact point by applying a current to the motor; and controlling the electro-mechanical brake for reducing noise and shock generated in the electro-mechanical brake by variably limiting a maximum or minimum amount of current applied to the motor based on the stroke of the piston.

Abstract: An electro-mechanical brake including: a wheel disc; a brake pad configured to press the wheel disc; a piston configured to press the brake pad; a motor configured to move the piston forward or backward when a current is applied; and a control unit configured to apply a current to the motor, detect a contact point on the basis of a position of the piston when forward movement of the piston due to the current ends, and estimate braking force corresponding to the position of the piston on the basis of the position of the piston, wherein the contact point is a position of the piston when the piston starts to move forward due to the motor and the piston and the brake pad start to come into contact with each other.

Abstract: A radar device according to an embodiment, and a driving method therefor are disclosed. The radar device comprises: an antenna; a radome which is arranged above the antenna and which has a shape that changes by means of an external stimulus; and a driving unit which is connected to at least one side of the radome and which applies the external stimulus to at least one side of the radome according to a predetermined control signal.

Abstract: An electro-mechanical brake configured such that a piston pulls a brake pad toward a wheel disc by driving a motor is disclosed. The electro-mechanical brake comprising: a hysteresis data storage unit storing rising-section function data on a rising section in which braking force increases as the piston moves toward the wheel disc, and falling-section function data on a falling section in which the braking force decreases as the piston moves away from the wheel disc; a position detection unit detecting a position of the piston; a calculation unit calculating a differential value of the position of the piston with respect to time; a past state data storage unit storing data on a preceding section corresponding to a preceding piston position; and a braking force calculation unit calculating the braking force based on the differential value of the piston position and the data on the preceding section.

Abstract: The present disclosure provides an electro-mechanical brake including a piston configured to push a brake pad towards a wheel disc by driving a motor, the electro-mechanical brake comprising: a position detection unit that detects the position of the piston; a current detection unit that detects the value of current applied to the motor; and a contact point calculation unit that calculates a contact point, which is where the piston is located when the brake pad starts to come into contact with the wheel disc, based on the position of the piston and the value of current applied to the motor, wherein the contact point calculation unit calculates the contact point based on the position of the piston detected by the position detection unit with respect to a plurality of specified current values and the position of the piston measured with respect to the plurality of specified current values.

Abstract: An electro-mechanical brake configured such that a piston pulls a brake pad toward a wheel disc by driving a motor is disclosed. The electro-mechanical brake comprising: a hysteresis data storage unit storing rising-section function data on a rising section in which braking force increases as the piston moves toward the wheel disc, and falling-section function data on a falling section in which the braking force decreases as the piston moves away from the wheel disc; a position detection unit detecting a position of the piston; a calculation unit calculating a differential value of the position of the piston with respect to time; a past state data storage unit storing data on a preceding section corresponding to a preceding piston position; and a braking force calculation unit calculating the braking force based on the differential value of the piston position and the data on the preceding section.

Abstract: The present disclosure in some embodiments provides an electro-mechanical brake configured such that a piston pulls a brake pad toward a wheel disc by driving a motor, the electro-mechanical brake comprising: a hysteresis data storage unit storing rising-section function data on a rising section in which braking force increases as the piston moves toward the wheel disc, and falling-section function data on a falling section in which the braking force decreases as the piston moves away from the wheel disc; a transition section function data generating unit generating data on a transition section function for a transition section in which the braking force is transferred from any one of the rising section or the falling section to a remaining section of the rising and falling sections as a moving direction of the piston is changed; a position detection unit; and a braking force calculation unit.

Abstract: The present disclosure in some embodiments provides an electro-mechanical brake comprising a piston configured to push a brake pad towards a wheel disc by driving a motor, the electro-mechanical brake comprising: a position detection unit detecting a position of the piston; a current detection unit detecting a value of current flowing through the motor; a motor controller controlling a motor to move the piston toward the wheel disc for a preset time when a vehicle is stopped; and a contact point calculation unit calculating a contact point that is a position of the piston when the brake pad starts to contact with the wheel disc, based on a first position that is a position of the piston when a first current value is detected, using the current detection unit.

Abstract: Disclosed are a three-dimensional tunneling field-effect transistor and a method of fabricating the same. A method of fabricating a three-dimensional tunneling field-effect transistor according to an embodiment of the present disclosure includes growing a buffer layer, an embedded source layer, an etch stop layer, an active source layer, a channel layer, and a drain layer on a substrate; depositing a metal layer on the drain layer, and then forming a pattern in a mesa structure shape; forming a vertical gate at one end of each of the etch stop layer, the active source layer, the channel layer, and the drain layer; isolating the active source layer from the substrate to form a first air bridge; isolating the drain layer from the substrate to form a second air bridge; and isolating the vertical gate from the substrate to form a third air bridge.

Abstract: Disclosed are a three-dimensional tunneling field-effect transistor and a method of fabricating the same. A method of fabricating a three-dimensional tunneling field-effect transistor according to an embodiment of the present disclosure includes growing a buffer layer, an embedded source layer, an etch stop layer, an active source layer, a channel layer, and a drain layer on a substrate; depositing a metal layer on the drain layer, and then forming a pattern in a mesa structure shape; forming a vertical gate at one end of each of the etch stop layer, the active source layer, the channel layer, and the drain layer; isolating the active source layer from the substrate to form a first air bridge; isolating the drain layer from the substrate to form a second air bridge; and isolating the vertical gate from the substrate to form a third air bridge.

Abstract: An optical disc drive, and a method of driving the optical disc drive are provided. Where the optical disc drive has a connectivity or a compatibility with a host that is incompatible with the optical disc drive, a file system and device information accepted by the host are provided. The host may have a compatibility with limited external medium devices and a specific command set for data exchange. The optical disc drive and the method of driving the optical disc drive may transmit compatible information to the host and select the specific command set accepted by the host, so that the optical disc drive is compatible with the host.

Abstract: An optical disc drive, and a method of driving the optical disc drive are provided. Where the optical disc drive has a connectivity or a compatibility with a host that is incompatible with the optical disc drive, a file system and device information accepted by the host are provided. The host may have a compatibility with limited external medium devices and a specific command set for data exchange. The optical disc drive and the method of driving the optical disc drive may transmit compatible information to the host and select the specific command set accepted by the host, so that the optical disc drive is compatible with the host.