Resources Contact Us Home
Two degree of freedom controller

Image Number 7 for United States Patent #5195028.

A PI type 2DOF controller comprises setpoint filter for receiving a setpoint value, and outputting a control setpoint value, the setpoint filter having a transfer function which follows the setpoint value, and is expressed by the following formula: ##EQU1## where T.sub.I : an integral time, S: a Laplace operator, .alpha.: a constant which can be set between 0 and 1, and .beta.: a constant which can be set between 0 and about 10, deviation-calculating portion for calculating a deviation between the control setpoint value and a control value fed back from a controlled system, control operation portion for receiving the deviation, executing at least a PI (P: proportional, I: integral) control operation, and outputting a manipulative variable, and applying portion for applying the manipulative variable to the controlled system.

  Recently Added Patents
Process for producing polyphenylene ether composition
Distortion compensation device, distortion compensation method, and radio transmitter
Method for processing an algae medium containing algae microorganisms to produce algal oil and by-products
Information processing apparatus and display control method
Accelerator for a read-channel design and simulation tool
Heap/stack guard pages using a wakeup unit
Information obtaining and notification, data message forwarding and handover method and access node
  Randomly Featured Patents
Method and apparatus for covering an open-top trailer
Flexible power apparatus
Well screen centralizer and method for constructing centralizer and for joining of well screens
Method and apparatus for inducing artificial oceanographic upwelling
Controlled humidification calibration checking of continuous emissions monitoring system
Osteotomy procedure
Tree saver
End effector for surgical plume evacuator
Method and system for tuning the effect of vehicle characteristics on risk prediction
Method and apparatus to perform reactive jamming while simultaneously avoiding friendly pseudo-random frequency hopping communications