Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Motor control device










Image Number 18 for United States Patent #5872439.

A motor control device for controlling a swing motor which moves a head is provided with a disturbance observer and an operation suspending unit. The disturbance observer outputs a compensating signal for compensating a driving voltage V for driving the swing motor. The operation suspending unit suspends an operation of the disturbance observer, based on a detection signal supplied by a velocity sensor which detects an angular velocity of the swing motor and the driving voltage signal V for driving the swing motor. The operation suspending unit operates when the signal voltage in the disturbance observer exceeds a reference level. This arrangement solves the following problem arising when the disturbance observer is employed for controlling a motor: when the motor comes into collisions with a stopper at an edge of the motion space, the disturbance observer further drives the motor so as to oppose a motion caused by the collisions, thereby exacerbating the collision.








 
 
  Recently Added Patents
Integrated circuits with magnetic core inductors and methods of fabrications thereof
Authoring method, authoring device and program
Recording device, recording method, and program
Method of stimulating tissue healing
Method for maintaining a driver-independent braking intervention after a collision
Timing controller capable of removing surge signal and display apparatus including the same
Reliable and accurate usage detection of a software application
  Randomly Featured Patents
Stackable integrated circuit chip package with improved heat removal
Slide guide device for moving wire and the like
Electrical cable having a self-sealing agent and method for preventing water from contacting the conductor
Active hood apparatus for vehicle
Adapter card replay buffer for system fault analysis
Soldering methods and devices
High opacity flexible composite material
Domino logic compatible scannable flip-flop
Manufacture of 4-nitroimidazoles
Articulating arm