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
System for the secure management of digitally controlled locks, operating by means of crypto acoustic credentials
IR(voltage) drop analysis in integrated circuit timing
Image display device and method of changing first EDID with second EDID wherein the second EDID information is compatible with image display device
Flexible pouch
Information processing apparatus, non-transitory computer-readable recording medium, and information processing method
Mixed reactant flow-by fuel cell
Method for manufacturing light emitting diodes
  Randomly Featured Patents
Adhesive tape having printable release coating
Coaxial PTCA catheter with anchor joint
System and method for detection of near-wellbore alteration using acoustic data
Method and apparatus for supporting mobile communications in asynchronous transfer mode based networks
Systems and methods for implementing a hold-call-back feature in a telecommunications network
Rear deraileur with shock absorber
Scaffolding for use in a confined area
Hierarchy-based analytical placement method for an integrated circuit
Inflatable sportsball with cushion layer
Adhesive composition for making form sets from carbonless copy paper sheets