In accordance with embodiments of the present disclosure, a system may include a feedback controller and logic. The feedback controller may be configured to, based on a setpoint value and a measured process value calculate an error between the setpoint value and the measured process value and generate a driving signal based on the error. The logic may be configured to determine if oscillation is present in the driving signal, determine if oscillation is present in an operational parameter other than the driving signal such that oscillation of such operational parameter may cause oscillation in the measured process value, determine if oscillation present in the driving signal is correlated with oscillation present in the operational parameter, and adjust a control parameter of the feedback controller responsive to determining that oscillation present in the driving signal is not correlated to oscillation present in the operational parameter.

In accordance with embodiments of the present disclosure, a system may include a feedback controller and logic. The feedback controller may be configured to, based on a setpoint value and a measured process value calculate an error between the setpoint value and the measured process value and generate a driving signal based on the error. The logic may be configured to determine if oscillation is present in the driving signal, determine if oscillation is present in an operational parameter other than the driving signal such that oscillation of such operational parameter may cause oscillation in the measured process value, determine if oscillation present in the driving signal is correlated with oscillation present in the operational parameter, and adjust a control parameter of the feedback controller responsive to determining that oscillation present in the driving signal is not correlated to oscillation present in the operational parameter.

A combine harvester has an inclination module coupled to the straw walker control system. The inclination module provides information on the inclination of the combine harvester. The straw walker control system is further configured to control the controllable frequency of the oscillating movement in function of the information on the inclination of the combine harvester.

A combine harvester has an inclination module coupled to the straw walker control system. The inclination module provides information on the inclination of the combine harvester. The straw walker control system is further configured to control the controllable frequency of the oscillating movement in function of the information on the inclination of the combine harvester.

A vibration control system for a variable speed cooling system includes a programmable controller in communication with a variable frequency drive (VFD). The programmable controller is programmed to command the VFD to operate at frequencies only outside of one or more frequency lockout bands automatically calculated by the programmable controller based on a comparison of newly acquired variable speed cooling system vibration data with previously stored variable speed cooling system vibration specification data.

A vibration control system for a variable speed cooling system includes a programmable controller in communication with a variable frequency drive (VFD). The programmable controller is programmed to command the VFD to operate at frequencies only outside of one or more frequency lockout bands automatically calculated by the programmable controller based on a comparison of newly acquired variable speed cooling system vibration data with previously stored variable speed cooling system vibration specification data.

Systems and methods define a stimulation pattern for a juvenile product utilizing a mobile device that executes a mobile application that is linked to the juvenile product. The method comprises the step of recognizing, by the mobile device when executing the mobile app, the user-defined stimulation pattern for the juvenile product. The stimulation pattern can be a vibration pattern or a motion pattern, and can be detected in a number of different ways by the mobile device. The method further comprises the step of determining control signals for the actuator(s) of the juvenile product based on the user-defined stimulation pattern that is recognized by the mobile device. The method further comprises the step of, in response to receiving a command to execute the user-defined stimulation pattern, controlling the actuator(s) of the juvenile product based on the stored control signals for the user-defined stimulation pattern.

Systems and methods define a stimulation pattern for a juvenile product utilizing a mobile device that executes a mobile application that is linked to the juvenile product. The method comprises the step of recognizing, by the mobile device when executing the mobile app, the user-defined stimulation pattern for the juvenile product. The stimulation pattern can be a vibration pattern or a motion pattern, and can be detected in a number of different ways by the mobile device. The method further comprises the step of determining control signals for the actuator(s) of the juvenile product based on the user-defined stimulation pattern that is recognized by the mobile device. The method further comprises the step of, in response to receiving a command to execute the user-defined stimulation pattern, controlling the actuator(s) of the juvenile product based on the stored control signals for the user-defined stimulation pattern.

A vibration controller includes: a piezoelectric element fixed to an object of control; and a quasi-inductor circuit and a negative resistance circuit connected in series to the piezoelectric element.

A vibration controller includes: a piezoelectric element fixed to an object of control; and a quasi-inductor circuit and a negative resistance circuit connected in series to the piezoelectric element.