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
Data communication apparatus, method of controlling the same, program, and storage medium
Servomotor control circuit
Organic light emitting diode display device and method of fabricating the same
Channel estimating method and device
Automated dynamic differential data processing
X2 10GBASE-T transceiver with 1 Gigabit side-band support
Polymeric compositions including their uses and methods of production
  Randomly Featured Patents
Production of tumor angiogenesis factor by cell culture
Night table
Layer transfer using boron-doped SiGe layer
Alternating drive for wheeled vehicles
4-1BB binding molecules
Pirazino indole derivatives
Three-dimensional memory card structure with internal direct chip attachment
Family sex education board game
Six-axis metrology sensor device
Plants and seeds of hybrid corn variety CH110748