218441 ⎘
Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor; Commutator motors, e.g. repulsion motors; Universal motors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback
Multi-axis servo control system
#2Jam detection and jam tolerant motion control
#3Current sensor abnormality diagnosis device
#4Protective redundant subsystem for power tools
#5Power tools
#6Method for determining rotational speed of an electric motor in a power tool
#7Protective redundant subsystem for power tools
#8Redundant overspeed protection for power tools
#9Motor speed control systems
#10Universal motor speed controller
#11Electric power tool with memory capability
#12Speed control system of a universal motor