Abstract: A cleaning and sterilizing device includes an ultrasonic cleaner, a top cover and an ultraviolet lamp. The ultrasonic cleaner has a cleaning tank for performing ultrasonic cleaning process to objects. The top cover is disposed on the opening of the cleaning tank and removable at any time. The ultraviolet lamp is installed on the bottom surface of the top cover and directly faces the cleaning tank for providing sterilization effect to the object in the cleaning tank. Therefore, the cleaning and sterilizing device of the present invention is optional to clean the object by ultrasonic cleaning or sterilize the object by irradiating it by the ultraviolet lamp, thereby attaining the objective of thorough cleaning and sterilization. Besides, the top cover with the detachable design brings convenience for adding or pouring the water in the cleaning tank, thereby increasing the usage convenience.

Abstract: An electric power steering system includes a housing, a ball screw, a motor, an angular position sensor and a computing unit. The ball screw includes a nut and a threaded shaft. The motor is disposed in the housing and connected to the nut and includes a bushing and a metal component. The metal component is fixed on the bushing and includes a central portion, a first wing portion and a second wing portion. The first wing portion and the second wing portion are disposed on an outer circumferential surface of the central portion. The angular position sensor is disposed in the housing and fixed relative to the housing. The angular position sensor includes a first sensing unit and a second sensing unit. The computing unit is electrically connected to the first sensing unit and the second sensing unit.

Abstract: An electric power steering system includes a housing, a ball screw, a motor, an angular position sensor and a computing unit. The ball screw includes a nut and a threaded shaft. The motor is disposed in the housing and connected to the nut and includes a bushing and a metal component. The metal component is fixed on the bushing and includes a central portion, a first wing portion and a second wing portion. The first wing portion and the second wing portion are disposed on an outer circumferential surface of the central portion. The angular position sensor is disposed in the housing and fixed relative to the housing. The angular position sensor includes a first sensing unit and a second sensing unit. The computing unit is electrically connected to the first sensing unit and the second sensing unit.

Abstract: A method of evaluating the health status of belt drive in electric power steering system by detecting the occurrence of sliding teeth in the electric power steering system and the frequency of occurrence and the output of the motor. In this way, the user really knows the belt drive health of the electric power steering system.

Abstract: A method of evaluating the health status of belt drive in electric power steering system by detecting the occurrence of sliding teeth in the electric power steering system and the frequency of occurrence and the output of the motor. In this way, the user really knows the belt drive health of the electric power steering system.

Abstract: A watch winder case is disclosed to include two opposite end plates connected to each other through two first support bars and two second support bars. Two first side plates are respectively abutted and inserted between one of the two first support bars and one of the two second support bars, and a second side plate is abutted and inserted between the two second support bars. Thus, the structural strength and structural stability of the watch winder case can be enhanced.