PRIORITY CONTROL SYSTEM, PRIORITY CONTROLLER, AND ACTUATOR

This invention is capable of detailed control in accordance with the mode of using a lighting apparatus and the like. A priority control system for an operation target device is provided, the system including: a plurality of operation devices configured to send operation request information to effect of exhibiting a function of an operation target device; a single or plurality of operation target devices configured to receive operation instruction information to effect of exhibiting the function and to exhibit the function in accordance with the operation instruction information; a control device configured to receive the operation request information from one of the operation devices, to generate or not to generate the operation instruction information triggered by the reception of the operation request information, and if the operation instruction information is generated, to send the generated operation instruction information to the operation target device; and a communication mechanism configured to communicate the operation request information and the operation instruction information, wherein a specific operation device priority level is set to each operation device, a dynamically variable operation target device priority level is set to the operation target device, and the control device refers to the operation device priority level and the operation target device priority level, and as a result of the reference, generates or does not generate the operation instruction information and retains or updates the operation target device priority level.