Electrically actuated braking device for e.g. motor cycle, has actuator including thin rectangular sectioned winding assembled on support, where winding is made of magnetic material such as cobalt and iron alloy and Terfenol-D

摘要

#CMT# #/CMT# The device has an electric motor (1) assembled with a ball screw (2) for rapidly displacing plates (3) that are provided in contact with a brake disk (4) or a brake drum. A magnetostrictive actuator (5) i.e. fixed magnetic circuit, creates a locking force on the plates against the disk or the drum. The actuator has a thin rectangular sectioned winding assembled on a support i.e. core (5a), where the core acts as a guide, and the winding is made of magnetic material such as cobalt and iron alloy and Terfenol-D. The material is magnetized by an electromagnet (11) and a permanent magnet. #CMT#USE : #/CMT# Electrically actuated braking device. Uses include but are not limited to vehicle e.g. passenger car, motor cycle, lorry, train, bus and aircraft, canal lift, chair lift, disengageable gondola lift, automatic gearbox and industrial robot gripper. #CMT#ADVANTAGE : #/CMT# The winding is made of magnetic material such as cobalt and iron alloy and Terfenol-D, thus reducing cost and encumbrance of the device. The configuration of the windings avoids magnetic leakage due to short circuit. The permanent magnet does not have an electrical energy supply, thus reducing size, energetic consumption and fuel consumption of the device. The configuration of the device ensures large bandwidth for ensuring electronic stability program type performances with applied low amplitude efforts. The utilization of the low power electric motor reduces the cost related to control electronics and dissipation for reducing cooling constraints of the device. The configuration of the device ensures magnitude order of locking efforts generated by magnetostriction. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an electrically actuated braking device with a magnetostrictive actuator that is made of magnetostrictive material magnetized by an electromagnet permanently supplied by a continuous current. 1 : Electric motor 2 : Ball screw 3 : Plates 4 : Brake disk 5 : Magnetostrictive actuator 5a : Core 11 : Electromagnet.