Resources Contact Us Home
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
Pressure-applying member, fixing device, and image forming apparatus
System and method for detecting crop rows in an agricultural field
Electric motor
Light-emitting device, film-forming method and manufacturing apparatus thereof, and cleaning method of the manufacturing apparatus
Node and wireless sensor network comprising the node
Tiger paw stationary tab
Method for producing a flexible composite elastomeric polyurethane skin
  Randomly Featured Patents
Starting-up method of fractionator
Antenna arrangement
Low-noise amplifier with tuned input and output impedances
Method of enabling an analysis of an external body portion
Triazolealkynol fungicidal agents
Process for deposition of ultra-fine grained polycrystalline diamond films
High performance gas turbine inlet filter (HEPA) using membrane media
Medical ultrasonic system and method for synthetic aperture processing in elevation
Method for preparing sustained release tablet
Information handling system, method, and article of manufacture including a vault object for encapsulation of object security credentials