Co-Ordinated Sensorless Control System

A method for co-ordinating control of two or more devices each having a respective internal sensor and each having a respective operable element, each device having a communication subsystem and configured to self-detect one or more device properties of the operable element, including an electrical variable, the device properties resulting in output having one or more output properties, wherein the one or more device properties, wherein at least one memory stores, for each device, correlation data between the one or more device properties and the one or more output properties for that device, the method being performed using sensor data from the respective internal sensors and without using sensor data from an external sensor that is external to the devices, the method comprising:

• detecting the one or more device properties self-detected by each device, including the electrical variable;
• estimate a speed variable of each device from the electrical variable;
• correlating, for each device, based on the stored correlation data, the detected one or more device properties, including the electrical variable, to the one or more output properties for that device;
• determining, for each device, a value of the one or more output properties for that device which result in combined output of the devices achieving an output setpoint;
• and
• co-ordinating control of each device to operate their respective one or more device properties, based on the stored correlation data, their respective determined value of one or more output properties for that device.

A non-transitory computer readable medium having instructions stored thereon executable by one or more processors for co-ordinating control of two or more circulating devices each having a respective internal sensor and each having a respective operable element, each device having a communication subsystem and configured to self-detect one or more device properties of the operable element, including an electrical variable, the device properties resulting in output having one or more output properties, wherein the one or more device properties, wherein at least one memory stores correlation data between the one or more device properties and the one or more output properties for that device, the co-ordinating control being executed using sensor data from the respective internal sensors and without using sensor data from an external sensor that is external to the devices, the instructions comprising:

• instructions for detecting the one or more device properties self-detected by each device, including the electrical variable;
• instructions for estimating a speed variable of each device from the electrical variable;
• instructions for correlating, for each device, based on the stored correlation data, the detected one or more device properties, including the electrical variable, to the one or more output properties for that device;
• instructions for determining, for each device, a value of the one or more output properties for that device which result in combined output of the devices achieving an output setpoint;
• and
• instructions for co-ordinating control of each device to operate their respective one or more device properties to achieve, based on the stored correlation data, their respective determined value of the one or more output properties for that device.