Motor module, motor step operation control system, and motor control device

A motor step operation control system comprising:

• a motor driving circuit to drive a motor having a mover and a stator;
• a position estimation device to output an analog or digital estimated position signal indicating an estimated position value of the mover;
• a motor control circuit being connected to the motor driving circuit to supply a command voltage value to the motor driving circuit in response to a pulse signal;
• and
• a memory storing variable step-size information, the variable step-size information defining an amount of displacement of the mover per pulse of the pulse signal, wherein,
• upon receiving the pulse signal, the motor control circuit determines the command voltage value based on the estimated position value of the mover acquired from the position estimation device and the variable step-size information read from the memory;
• and
• the motor driving circuit changes a position of the mover based on the command voltage value.

A motor control device for use while being connected to a motor driving circuit which drives a motor having a mover and a stator and to a position estimation device which outputs an analog or digital estimated position signal indicating an estimated position value of the mover, the motor control device comprising:

• a control circuit to generate a command voltage value based on a command position value and the estimated position value, and supply the command voltage value to the motor driving circuit;
• a memory storing variable step-size information, the variable step-size information defining an amount of displacement of the mover per pulse of a pulse signal that is input from an external device;
• and
• a command position value generation circuit to generate the command position value based on the pulse signal and the variable step-size information.

A step operation control method for a motor having a mover and a stator, the step operation control method comprising:

• with a motor control device, generating an analog or digital estimated position signal indicating an estimated position value of the mover;
• with the motor control device, acquiring variable step-size information from a memory, the variable step-size information defining an amount of displacement of the mover per pulse of a pulse signal that is input from an external device;
• with the motor control circuit, receiving a pulse signal from the external device, and generating the command voltage value based on the estimated position value of the mover and the variable step-size information;
• and
• with the motor driving circuit, changing a position of the mover in variable steps, based on the command voltage value.