Pulse generating method and pulse generator, and motor control system using the same

A motor control system, comprising:

• a motor;
• motor driver to drive the motor;
• and
• a pulse generator to generate one or more pulses to control a speed of the motor to the motor driver,
• wherein the pulse generator comprises,
• a control calculator to calculate a number of first and second reference clocks respectively determining widths of each of one or more first pulses and each of one or more second pulses, a first pulse number for the first pulse, a second pulse number for the second pulse, and a total number of one or more pulses to be generated during a cycle based on a frequency of reference clocks and a predetermined time interval, and
• a logical circuit to receive the cycle and the calculations on the total number of the pulses to be generated during the cycle, the number of the first reference clocks determining the width of the first pulse, the number of the second reference clocks determining the width of the second pulse, the first pulse number, and the second pulse number, and to generate the first pulse number of the first pulses and the second pulse number of the second pulses as the pulses during the cycle according to the calculations to control the motor.

A pulse generator to control a motor, comprising:

• a reference clock generator to generate one or more reference clocks;
• a control calculator to generate a number of one or more first reference clocks, a number of one or more second reference clocks, a first pulse number of one or more first pulses, and a second pulse number of one or more second pulses, and a total number of pulses to be generated in a cycle based on a frequency of the reference clocks of the reference clock generator and a predetermined time interval;
• and
• a logical circuit to generate the first pulses each having a first width according to the number of the first reference clocks of the control calculator and the number of the reference clocks of the reference clock generator, the second pulses each having a second width according to the number of the second reference clocks of the control calculator and the number of the reference clocks of the reference clocks, during the cycle according to the calculations so that a pulse train including the first pulses and the second pulses is generated according to the total number of the pulses and the reference clocks.

A pulse generating method of generating a pulse to control a motor, the method comprising:

• generating one or more reference clocks in a reference clock generator;
• generating a number of one or more first reference clocks, a number of one or more second reference clocks, a first pulse number of one or more first pulses, and a second pulse number of one or more second pulses, and a total number of pulses to be generated in a cycle based on a frequency of the reference clocks of the reference clock generator and a predetermined time interval;
• and
• generating the first pulses each having a first width according to the number of the first reference clocks and the number of the reference clocks, the second pulses each having a second width according to the number of the second reference clocks and the number of the reference clocks during the cycle according to the calculations, so that a pulse train including the first pulses and the second pulses is generated according to the total number of the pulses and the reference clocks.

A pulse generator, comprising:

• a motor control unit to control a motor during a plurality of predetermined repeating regular time intervals of operation by generating a high level command including information indicating a plurality of first pulses having a first width to be generated in a next regular time interval of operation and indicating a plurality of second pulses having a second width to be generated during the next regular time interval of operation;
• and
• a logic circuit to generate the pluralities of first and second pulses during the next predetermined regular time interval of operation according to the high level command received from the motor control unit,
• wherein the first width of each of the plurality of first pulses is defined by a first number of reference clock cycles and the second width of each of the plurality of second pulses is defined by a second number of reference clock cycles.