stotz controller, German stotz model, stotz price

stotz controller refers to converting predetermined control schemes and planning instructions into desired mechanical motion under complex conditions, achieving precise position control, speed control, acceleration control, and torque or force control of mechanical motion. A motion controller is a specialized controller that manages the operating mode of electric motors; for example, a motor drives an object upward to a specified position via a limit switch controlling an AC contactor, then moves downward, or a time relay controls the motor's forward/reverse rotation or intermittent operation. Motion control applications in robotics and CNC machine tools are more complex than those in dedicated machines, as the latter involve simpler motion forms, often referred to as general motion control (GMC).

stotz controller introduction

Motion control typically involves converting predetermined control schemes and planning instructions into desired mechanical motion under complex conditions, achieving precise position control, speed control, acceleration control, and torque or force control. Based on the power source, motion control is mainly categorized into electrical motion control using motors, pneumatic/hydraulic control using gas and fluids, and thermal engine motion control using fuels (coal, oil, etc.). According to statistics, over 90% of all power sources come from electric motors. Electric motors play a crucial role in modern production and daily life, making electrical motion control the most widely applied among these types. Electrical motion control evolved from electric drive systems, which are control systems targeting electric motors. While motion control systems vary, a typical modern system's hardware primarily consists of a host computer, motion controller, power drive unit, motor, actuator, and sensor feedback detection device. The motion controller is a control device centered on a central logic control unit, using sensors as signal-sensitive elements, and targeting motors or power devices and execution units. [A motion controller is a specialized controller that manages the operating mode of electric motors; for example, a motor drives an object upward to a specified position via a limit switch controlling an AC contactor, then moves downward, or a time relay controls the motor's forward/reverse rotation or intermittent operation. Motion control applications in robotics and CNC machine tools are more complex than those in dedicated machines, as the latter involve simpler motion forms, often referred to as general motion control (GMC). The motion controller is the primary component determining automatic control system performance. For the Mitsubishi series, the motion CPU is the motion controller. For simple motion control systems, a motion controller designed with a microcontroller can meet requirements and offers high cost-performance ratio.

stotz controller functions

1) Motion planning function: This essentially generates reference values for motion speed and position. Appropriate reference values not only improve trajectory accuracy but also reduce requirements for the rotation system and mechanical transmission components. General motion controllers typically provide motion planning methods that limit values affecting dynamic trajectory accuracy, such as jerk, acceleration, and speed, allowing users to call corresponding functions directly. Motion planning limiting acceleration produces a trapezoidal velocity curve; motion planning limiting jerk produces an S-shaped velocity curve. Generally, for CNC machine tools, motion planning methods limiting acceleration and speed reference values yield excellent dynamic characteristics. Fast positioning systems with high acceleration and short strokes have strict requirements for positioning time and overshoot, often requiring motion planning methods with continuous higher-order derivatives. 2) Multi-axis interpolation and continuous interpolation functions: The multi-axis interpolation function provided by general motion controllers is widely used in the CNC machinery industry. In recent years, the rapid development of the engraving market, especially mold engraving machines, has driven the development of continuous interpolation functions in motion controllers. Mold engraving involves processing numerous short line segments, requiring minimal fluctuation in processing speed between segments and smooth transitions at speed change inflection points. This requires motion controllers to have look-ahead speed and continuous interpolation capabilities. Googol Technology has launched a continuous interpolation motion controller specifically for small segment processing, which has been well applied in mold engraving, laser engraving, and planar cutting. 3) Electronic gear and electronic cam functions: Electronic gears and cams significantly simplify mechanical design and enable functions difficult to achieve with mechanical gears and cams. Electronic gears allow multiple motion axes to move synchronously according to set gear ratios, making them suitable for fixed-length shearing and shaftless register printing. Additionally, electronic gear functions can make one motion axis follow a function determined by the motion of other axes, or follow the combined speed of two other axes at a set ratio. The electronic cam function allows changing cam shapes via programming without grinding mechanical cams, greatly simplifying processing techniques. This function makes motion controllers suitable for quenching processing of mechanical cams, irregular glass cutting, and all-electric spring driving. 4) Compare output function: This refers to the motion controller outputting one or more digital signals when the position reaches a set coordinate point during motion, without affecting the motion process. For example, in AOI flying inspection, the compare output function triggers CCD high-speed imaging at the set position without interrupting motion, significantly improving efficiency and image quality. This function is also well applied in laser engraving applications by Googol Technology. 5) Probe signal latching function: This latches the moment a probe signal is generated and the positions of all motion axes. Its accuracy depends only on hardware circuits, unaffected by software and system inertia, making it suitable for the CCM measurement industry. Additionally, more OEM manufacturers wish to integrate their extensive industry application experience into motion control systems, designing personalized motion controller functions for different applications and control objects. Googol Technology has developed a general motion controller application development platform, giving general motion controllers a truly object-oriented open control structure and system reconfiguration capability. Users can load self-designed control algorithms into the motion controller's memory to reconstruct a special-purpose dedicated motion controller without changing the control system's structural design.

stotz controller composition

A motion controller generates trajectory points (desired output) and closes the position feedback loop. Many controllers can also close a velocity loop internally. A drive or amplifier converts the motion controller's control signals (usually speed or torque signals) into higher-power current or voltage signals. More advanced intelligent drives can close position and velocity loops themselves for more precise control. An actuator, such as a hydraulic pump, cylinder, linear actuator, or motor, outputs motion. A feedback sensor, such as a photoelectric encoder, resolver, or Hall effect device, feeds back the actuator's position to the position controller to close the position control loop. Numerous mechanical components convert the actuator's motion into the desired form, including gearboxes, shafts, ball screws, timing belts, couplings, and linear and rotary bearings. Typically, a motion control system's functions include speed control and point-to-point control. There are many methods to calculate a motion trajectory, usually based on a motion velocity curve such as triangular, trapezoidal, or S-shaped velocity curves. For example, electronic gears (or electronic cams), where the slave axis position mechanically follows the master axis position changes. A simple example is a system with two turntables rotating at a given relative angle. Electronic cams are more complex than electronic gears, making the follow relationship between master and slave axes a function. This curve can be nonlinear but must be functional.

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