MICRO-BEAM SA Patent applications |
Patent application number | Title | Published |
20140213973 | SYSTEM COMPRISING A SECONDARY DEVICE WITH A PIEZOELECTRIC ACTUATOR WIRELESSLY SUPPLIED AND CONTROLLED BY A PRIMARY DEVICE - A system for contactless transmission of energy and control signals between a primary device and a secondary device. The primary device has a primary set with at least one primary coil and an electronic supply driver for supplying primary signals to the primary set of primary coils. A secondary device has a secondary set with at least one secondary coil, at least one piezoelectric actuator, and electronic components including a resonant circuit powered by the secondary set. The piezoelectric actuator is powered and controlled through the secondary set of secondary coils and the electronic components. | 07-31-2014 |
20140196968 | ELECTRICALLY ASSISTED STREET SCOOTER - An electrically assisted street scooter includes a handlebar, a deck, front and back wheels, a battery pack integral with the deck, an electrical motor for driving at least one of the wheels, and a drive circuit for controlling electrical supply to the electrical motor from the battery pack. The drive circuit includes a switch for setting the drive circuit in a low power-mode where the electrical motor is not powered when the switch is off, or for setting the drive circuit in a drive mode where the electrical motor can be powered when the switch is on. An auto-power on circuit automatically switches the switch on when a user pushes the street scooter. An auto-power off circuit automatically switches the switch off when the scooter is not used during a predetermined duration. The level of electrical assistance is determined based on the peak value after each leg push. | 07-17-2014 |
20120146626 | METHOD AND ARRANGEMENT FOR DETERMINING THE POSITION OF A ROTOR IN A BRUSHLESS MOTOR OR IN STEPPER MOTOR - Method for determining the position of a rotor in a brushless motor or in a stepper motor, said method including the following steps: applying a voltage in at least one powered phase of the motor; measuring, in an unpowered phase of the motor, the voltage induced by mutual inductance between phases; and determining said position and/or the speed of the rotor from said induced voltage. | 06-14-2012 |
20100001673 | SENSORLESS TECHNOLOGY, ESTIMATION OF SAMPLED BACK EMF VOLTAGE VALUES AND/OR THE SAMPLED INDUCTANCE VALUES BASED ON THE PULSE WIDTH MODULATION PERIODS - The methods and devices provided herein include methods and devices for controlling a permanent magnet motor. In one implementation, a method is provided that allows for the determination of the values of the phase back EMF voltage and of the phase inductances while the phases are powered with a PWM (Pulse Width Modulation) controlled current and/or voltage. | 01-07-2010 |