Method of estimating motor torque constant
AssigneeSamsung Electronics Co., Ltd.
InventorChang-ik Kang
Life of this patent
Estimating the term…
Abstract
A method of estimating a motor torque constant including the steps of measuring a current and a speed of motor at sampling time during rotating of the motor and calculating the motor torque constant Kt* by a multiplicity of the measured current values and speed values. Also, the motor torque constant is calculated by the formula K t * = ∑ 1 N i ( k - 1 ) [ v ( k ) - v ( k - 1 ) ] ∑ 1 N i ( k - 1 ) 2 where i(k) and v(k) respectively indicate the current and the speed of the motor at a sampling time ‘k’, and N indicates a natural number greater than 1.
Claims15
A method of estimating a motor torque constant, comprising the steps of:
- detecting a plurality of instantaneous and variable electrical current values input to a motor and a plurality of instantaneous and variable speed values output from said motor at a plurality of sampling times during rotation of said motor;
- and
- estimating said motor torque constant characteristic of said motor on the basis of both a multiplicity of samples of said speed values and a multiplicity of samples of said current values.
A method of determining a motor torque constant, comprising of the steps of:
- storing a reference position of a motor;
- allowing said motor to rotate;
- measuring a plurality of electrical current values input to said motor and a plurality of speed values output from said motor at a plurality of sampling times during the rotation of said motor;
- and
- determining said motor torque constant in dependence upon said reference position, a multiplicity of samples of said current values, and a multiplicity of samples of said speed values.
Dependencies are inferred from the claim text.