HAVACOMM

Potentiometer feedback in radio control servo systems result in linearity and travel errors.  We have developed a series of PIC chip servo amplifiers which allow digital feedback in place of the customary pot.  This results in precise linearity and travel characteristics.  The digital feedback is mechanized by an encoder wheel mounted on the motor shaft.  A reflective object sensor looks at the wheel and feeds the data to the PIC chip which determines the speed and direction of the motor.  The chip then switches the motor on or off to control the position of the output arm to move to the commanded position.

The chips come programmed in several flavors:

DFB001       For model airplane and car use.

DFB002       For robotics positioning applications.

DFB003       For robotics traction applications.

The overview explains the general principles involved and the R/C aircraft and robotics sections explain the differences in the chips.