Sensorless speed measurement for brushed DC motors

Radcliffe, PJ; Kumar, Deepak

doi:10.1049/iet-pel.2015.0147

Cited by 30 publications

(14 citation statements)

References 23 publications

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“…Direct current motors are widely used in many sectors, especially in industrial applications [16]. It is widely used because the production process is easy and cost-effective.…”

Section: Direct Current (Dc) Motor Modelmentioning

confidence: 99%

Power analysis of robotic medical drill with different control approaches

Torun

Malatyali

2020

Cumhuriyet Science Journal

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Increasing the efficiency of the systems used in surgical operations has become an important issue. Especially in orthopedic surgery, many surgical systems and instruments are used to reduce the workload of surgeons and increase the success of the operation. Surgical drills, which are one of these systems used in orthopedic surgery, are used in operations such as drilling, cutting and carving in various interventions. Cases such as drill sensitivity and stability are critical to operational success and patient health. In this study, an orthopedic drill design that can be added to a linear motion module or a 6-axis robot manipulator has been realized. Linear Quadratic Regulator (LQR), which is one of the optimal controller methods, Proportional Integral (PI) Controller, which is one of the classical controller methods and Model Predictive Controller (MPC) systems from modern controller systems are designed to perform speed control task of the surgical drill. A drill integrated into the robot manipulator for a constant drilling speed of 120 rad/sec and a robot manipulator were used to provide constant feed rate (1 mm/s) and to drill holes at constant intervals during the drilling experiments. Power analysis is performed in real-time in bone drilling operations for three controllers. Current, and voltage information during drilling are recorded simultaneously in the experimental setup. In particular, it has been observed that the power signal and the force information of the bone in different layers are proportional.

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“…Direct current motors are widely used in many sectors, especially in industrial applications [16]. It is widely used because the production process is easy and cost-effective.…”

Section: Direct Current (Dc) Motor Modelmentioning

confidence: 99%

Power analysis of robotic medical drill with different control approaches

Torun

Malatyali

2020

Cumhuriyet Science Journal

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“…By using these parameters, dynamic model based speed estimation is also reported in [9][10][11][12][13]. Inductive spike duration based speed estimation approach was also proposed for brushed DC motor in [14], which does not comply with DC motor operated by steady terminal voltage and also may require further error reduction technique. In some studies [15], back-EMF-based speed estimation was proposed for brushed DC motor operated with steady terminal voltage but applicability is restricted to the motor having armature size <1 cm 3 .…”

Section: Introductionmentioning

confidence: 99%

Sensorless speed estimation of permanent magnet DC brushed motor considering the effect of armature teeth–slots and commutation

Ghosh

Ghosh²,

Saha³

et al. 2017

IET Power Electronics

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This study proposes a novel technique of speed estimation for permanent magnet direct current (PMDC) brushed motor. The impact of armature teeth-slots and commutation of PMDC motor on armature current is considered in this study to estimate the speed. In many applications, speed measurement of motors is essentially required. Conventionally mechanical sensors are coupled to the motor shaft for speed measurement. Recently many sensorless methods for speed estimation of motor had been introduced. This study proposes a new method where the variation in effective magnetic path reluctance due to continuous alternation in teeth-slots positions with respect to stationery poles is considered. Combined effects of effective magnetic path reluctance variation and armature commutation cause ripple in armature current. In this study, the effect of teethslots in armature current is investigated using finite-element approach and also it is verified experimentally. Furthermore, an elementary circuitry is included in this study in support of the proposed method from armature current. The performed test on a 24 V-100 W brushed PMDC motor indicates that the proposed method is effective in wide range of speed estimation considering the effect of change in mechanical load or terminal voltage level.

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“…The solutions [4], [6], [9] do not provide asymptotic speed tracking. The papers [3] - [5] provide the stability analysis of the estimation convergence only, but none of them demonstrate proof of the close-loop system stability.…”

mentioning

confidence: 98%

“…A hybrid fuzzy-PI observer [8] does not provide an optimal solution in all operation modes of the motor. The controller [9] provides speed estimation based only on the duration of the voltage spikes in pulsewidth modulation.…”

mentioning

confidence: 99%

Sensorless Speed Control of the Direct Current Motors

Peresada

Nikonenko

Pyzhov

et al. 2021

Praci Inst. elektrodin. Nac. akad nauk Ukr.

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In this paper, a new speed control algorithm for a permanent magnet DC motor which does not require implementation of the angular speed sensor is presented. Three steps are performed to develop the control system: design of speed tracking control algorithm assuming the speed measurement; design of speed observer; design of sensorless speed control algorithm based on the principle of separation. Information about speed is taken from the speed observer using the motor current value. The stability of the composite system dynamics consisting of three subsystems (the speed regulation loop, current regulation loop, and speed observer) is analyzed. The feedback gains tuning procedure for decoupling of three subsystems is given. The simulation results show that the dynamic performance of the designed system is similar to the performance of the system with angular speed measurement. The resulting closed-loop system has structural robustness properties with respect to parametric and coordinate disturbances. References 12, figures 2.

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Sensorless speed measurement for brushed DC motors

Cited by 30 publications

References 23 publications

Power analysis of robotic medical drill with different control approaches

Power analysis of robotic medical drill with different control approaches

Sensorless speed estimation of permanent magnet DC brushed motor considering the effect of armature teeth–slots and commutation

Sensorless Speed Control of the Direct Current Motors

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