Chad N Swenson

US Patent:

20100102937, Apr 29, 2010

Filed:

Oct 28, 2008

Appl. No.:

12/259859

Inventors:

Chad Nicholas Swenson - Mandan ND, US
Jesse Jon Walter - Crystal MN, US
Kevin Charles Allmaras - Carrington ND, US
Brian Frederick Boeshans - Carrington ND, US

Assignee:

COOPER TECHNOLOGIES COMPANY - HOUSTON TX

International Classification:

G05B 11/01

US Classification:

34031011

Abstract:

Stimulating power line carrier injection with reactive oscillation comprises exciting a tank circuit to oscillate at the carrier frequency by sinking pulses of current between one node of a capacitor in the tank circuit and the other node of the capacitor. A power transformer is connected to a distribution system to inject power line carrier onto the power line. An excitation circuit sinks short pulses of current between one node of a capacitor and the other node of the capacitor that is connected in a tank circuit arrangement with an inductor and the secondary winding of the power transformer. The tank circuit oscillates at the frequency of the excitation pulses if the resonant frequency of the tank circuit is close to the frequency of excitation. The oscillating current is coupled onto the power line system through the power transformer. The phase of the power line carrier signal is shifted by shifting the phase of the excitation pulses.

US Patent:

20220374011, Nov 24, 2022

Filed:

May 18, 2022

Appl. No.:

17/747648

Inventors:

- West Fargo ND, US
Chad Swenson - Bismarck ND, US

International Classification:

G05D 1/00
E02F 9/22
E02F 9/20

Abstract:

A control system for controlling movement of a work element of a power machine can include a control device, and an operator input device in communication with the control device. The control device can be configured to receive, from the operator input device, a signal for controlling an actuator of the work element. The signal can be filtered, using a digital notch filter, to generate a filtered signal, and an actuator of the work element can be controlled based on the filtered signal.

US Patent:

20220340016, Oct 27, 2022

Filed:

Apr 25, 2022

Appl. No.:

17/728555

Inventors:

- West Fargo ND, US
Chad Swenson - Bismarck ND, US

International Classification:

B60L 15/20
F02D 29/04
F02D 41/22

Abstract:

A power machine can include an engine control module configured to determine a target operational speed of the power machine and control the engine based on the target operational speed. A drive controller can be configured to control operation of a hydraulic drive pump or other work element to decrease engine speed toward a target stabilization speed that is lower than the target operational speed.