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
Visibility radio cap and network
Packaging sleeve
AC/DC converter
Isothermal amplification of DNA
Receiver with feedback continuous-time delta-sigma modulator with current-mode input
Vehicle, toy, and/or replicas thereof
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
  Randomly Featured Patents
Vehicle center console
Method for maintaining geometry of ballasted railroad track
Cover for a transport refrigeration unit
Flow control valve
System for controlling film transport for camera
Aryl-substituted heterocycles, and use thereof
Reduction of excessive spectral power distribution from class-C saturated amplification of a pulsed-carrier signal
Polyester fiber process
Electronic game apparatus
Photoselective electroless plating method employing UV-absorbing substrates