Fill in the blanks with the correct answers: 1. COMPUTERIZED NUMERICAL CONTROL is a kind of (computer numerical control) system referred to as CNC. 2. The SINUMERIK 820S system is a (stepper motor) control system designed for economical CNC machine tools. 3. The three-phase voltage imbalance of the distribution network causes the input voltage and current waveforms of the inverter to be (distorted). 4. To improve anti-interference ability, the AC power ground wire and the (signal ground wire) cannot be shared. 5. The electric field shielding solves the distributed capacitance problem, and the (shielded) ground wire is connected to the earth. 6. The electrostatic shield of the electronic measuring device must be connected to the zero signal (potential common line) of the shielded circuit. 7. Most control systems have automatic control, (automatic diagnosis), automatic information processing, automatic correction, and automatic detection. 8. Most mechatronic product control systems have automatic control, automatic diagnosis, automatic information processing, automatic correction, and (automatic detection). 9. Mechatronics includes mechanical technology, computer and information processing technology, system technology, (automatic control) technology, sensing and detection technology, and servo and transmission technology. 10. The electrical control schematic design follows the order: main loop - control loop - (interlock and protection) - overall inspection. 11. The transformation of economical CNC machine tools is mainly used for the numerical control transformation of medium and small (lathe) and milling machines. 12. The SIN840C can implement (3D) differential compensation. 13. CBS (Central Service Unit) stands for CENTERSERVICEBOARD. 14. The SIN840C control system consists of a numerical control unit body, a spindle, and a (servo unit). 15. There are four main machining operations on the machine operation panel: JOG manual, TEACHIN teaching, MDA (manual input data automatic operation), and AUTOMATIC automatic. 16. In an automatic control system, a system that can change (output) with a certain degree of accuracy following a change in input amount is called a servo system. 17. The inverting proportional amplifier has two inputs: one (inverting input), indicating that the input and output are inverted, and the other is the non-inverting terminal, indicating that the input signal is in phase with the output signal. 18. Lean production changes the mode of the next project to promote the production of the next project in the production process (the next process requires the previous process to produce). 19. (Guiding operational training) is a very important way to improve students' independent operation skills. 20. To improve the reliability of electrical equipment, the (transformer neutral point) is closely connected to the grounding pole, known as working ground. B 1. The CNC system relies on (software) to meet various requirements of different types of machine tools. 2. A typical industrial control system consists of (primary equipment) and an industrial control unit. 3. When the inductance of the power distribution system and the compensation capacitor are in series resonance, the (minimum) impedance is presented. 4. The floating connection requires that the insulation resistance of the whole machine and ground should not be (less than) 50MΩ. 5. Magnetic circuit shielding (magnetic material) closes the magnetic field, and the shielding grounding wire is well connected to the ground. 6. The junction of the zero signal reference potential must ensure that (interference current) does not flow through the signal line. 7. There are 12 switch input nodes and 8 switch output nodes. The actual number of I/O points used is 20, and the basic unit of a small and medium-sized controller (F-20MR) can meet the control requirements of the machine tool. 8. The electrical control schematic is designed in the order of the main circuit - control circuit - (interlock and protection) - overall inspection. 9. Digital display machine tools install digital display (position) detection devices on ordinary machine tools. 10. The SIN840C (standard system) software contains two types of settings: lathe and milling machine. 11. There are four machining operation methods on the machine operation panel: JOG manual, TEACHIN (teaching), MDA manual input data automatic operation, and AUTOMATIC automatic. 12. The IFT5 brushless three-phase servo motor includes a stator, rotor, and a brushless feedback system that detects the rotor position and (speed) of the motor. 13. The difference compensation principle starts from the known motion trajectory's starting point, calculates the end point coordinates and (curve equation) in real time using the data system. 14. The SIN840C control system consists of a numerical control unit body, a spindle, and a (feed servo unit). 15. The servo system of a numerically controlled machine tool generally includes a mechanical transmission system and a (drive) device. 16. The (ISO14000) series of standards is related to environmental management issued by the International Organization for Standardization. 17. The advantage of the DC drive system is that the DC motor has good (speed regulation) performance and is easy to adjust. 18. The purpose of improving labor productivity is to accumulate funds, reduce costs, accelerate national economic development, and achieve socialist modernization. 19. In instructional operation and independent operation training, it is necessary to allow students to perform training (independently and practically) repeatedly. 20. (Protective grounding) is used in electrical equipment where the power neutral is not directly grounded. C 1. The CNC system has good (flexibility) and versatility, and high reliability. 2. The (primary equipment) part of the typical industrial control system consists of the controlled object, transmitter, and actuator. 3. When the inductance of the power distribution system and the compensation capacitor are in series resonance, the compensation capacitor and the power distribution system have a (maximum) current. 4. Floating connection is prone to (static) interference. 5. When the power supply has an ungrounded signal source connected to a grounded amplifier, the shield at the input should be connected to the common (amplifier). 6. The inside of the electronic device uses a low-noise preamplifier to prevent coupling and (self-oscillation) between amplifiers. 7. Mechatronics integrates the information processing functions and control functions of electronic devices into (mechanical devices), making them more systematic, complete, scientific, and advanced. 8. Most mechatronic product control systems have automatic control, automatic shut-off, automatic information processing, (automatic correction), automatic detection, and other functions. 9. Mechatronics includes mechanical technology, computer and information processing technology, system technology, automatic control technology, sensing and (detection) technology, and servo drive technology. 10. The electrical control schematic is designed in the order of the main circuit - control circuit - (interlock and protection) - overall inspection. 11. PCL retrofit equipment control refers to replacing large and complex (relay) control devices in the original equipment control with a PCL programmable controller. 12. The SIN840C system module has the characteristics of (less), clear structure, and easy maintenance. 13. There are four machining operation modes on the machine operation panel: JOG manual, TEACHIN teaching, MDA manual input data automatic operation, and AUTOMATTC group (automatic). 14. The difference compensation principle calculates the coordinates of each intermediate point in real time based on the starting point coordinate of the known motion trajectory, the endpoint coordinate, and the curve equation. 15. The mechanical transmission system of the servo system of a CNC machine tool is generally composed of a servo drive system, a mechanical transmission component, and a (drive component). 16. The servo system is a feedback control system. It uses command pulse as the input set value, compares it with the output controlled quantity, and automatically adjusts the system by using the (offset value) generated after comparison. 17. CIMS is an abbreviation for (Computer Integrated Manufacturing System). 18. All direct and indirect working hours required by the production worker to complete the production task in the production class are included in the fixed time quota (fixed time). 19. The guiding operation involves demonstration operations and (field technology) instructional training. 20. (Two-phase electric shock) is the most dangerous form of electric shock. D 1. In order to facilitate the maintenance and use of the system, the CNC has a system of fault self-diagnosis. 2. The hardware of the industrial control system consists of a computer basic system and a (process I/O system). 3. To avoid (resonance), the reactor should be connected in series before the compensation capacitor. 4. The A/D converter is extremely important when acquiring a weak signal of 0-50 mv (simulated grounding method). 5. When the grounded signal source is connected to an ungrounded amplifier, the input shield of the amplifier should be connected to the common terminal (source). 6. As the various coils inside the device are shielded or farther away, pay attention to the magnetic flux leakage direction and reduce (mutual inductance coupling). 7. With the development of electronic technology, mechanical technology and electronic technology can be organically combined to achieve system optimization (optimization). 8. Most of the mechatronics product controls have (automatic control), automatic diagnosis, automatic information processing, automatic correction, automatic detection, and other functions. 9. The frequency converter transformation equipment speed control system adopts AC frequency converter speed regulation to replace the original equipment (DC speed regulation) or other motor speed regulation scheme. 10. Machine data, PLC programs, and machining operations can be backed up on the (MMC) hard disk. 11. There are four kinds of machining operations on the machine operation panel: JOG (manual), TEACHIN (teaching), MDA (manual input data automatic operation), and AUTOMATTC (automatic). 12. SIN840C can implement (3D) interpolation. 13. The mechanical transmission system in the servo system of CNC machine tools is generally composed of (servo drive) system, mechanical transmission components, and drive components. 14. The servo system is a feedback control system. It uses (command pulse) as the input set value, compares it with the output controlled quantity, and automatically adjusts the system by using the deviation value generated after comparison. 15. Inverting proportional amplifier has two inputs, one inverting input, indicating that the input and output are inverting, and the other is (in-phase), indicating that the input signal is in phase with the output signal. 16. In an automatic control system, a system that can change (output) with a certain accuracy following a change in input amount is called a servo system. 17. CIMS mainly includes business management functions, engineering design automation, manufacturing automation, and (quality assurance). 18. The purpose of improving labor productivity is to accumulate funds (lower production costs), accelerate the development of the national economy, and achieve socialist modernization. 19. In the course of guiding the students, it is necessary to strengthen (safe) education for the trainees. 20. (Two-phase electric shock) is the most serious electric shock accident. E 1. In the FANUC system, the main CPU in the F15 series is a (32)-bit CNC device, so it is an artificial intelligence CNC device. 2. The built-in PLC of the LJ-20 series forms object files and (ladder) files by computer programming. 3. When the motor is connected to the input side of the inverter, it should not be connected (capacitor) to increase the power factor. 4. The three-wire sampling double-shielded floating technology is to sample the ground and (signal line). 5. Floating connection requires that the insulation resistance of the whole machine cannot be (less than) 50MΩ. 6. For small-capacity inverters, each phase conductor can be wound in the same direction on the (zero-sequence reactor) for more than 4 turns, and the output side of the actual inverter is anti-interference. 7. Mechatronics includes mechanical technology, computer and (information processing) technology, system technology, automatic control technology, sensing and detection technology, and servo transmission technology. 8. The electrical control schematic design is carried out in the order of the main circuit - control circuit - (interlock and protection) - the overall inspection. 9. Inverter retrofit equipment speed control system improves the speed regulation performance and reduces (reduced) power consumption. 10. In computer numerical control system (CNC), the interpolation work is generally done by software. 11. SIN840C numerical control unit includes display part, (host frame), input/output device, and drive unit. 12. Machine data, PLC program, and processing can be backed up on the (MMC) hard disk. 13. CSB (Central Service Unit) is an abbreviation for CENTERSERVICEBOARD. 14. The servo drive system is generally composed of (drive control) and drive components. 15. The detecting device in the servo system of a numerically controlled machine tool is generally composed of detecting elements. 16. The servo system of a CNC machine tool generally includes a mechanical transmission system and a (detection) device. 17. All direct and indirect working hours required by the production worker to complete the production task in the production class are in the fixed time quota (fixed time). 18. Lean production has the characteristics of changing the mode of the next project to promote the next project in the production process (the mode of the next project requires pulling the production of the road engineering). 19. Through the instructional operation, the student's (hands-on) ability is continuously enhanced and improved, and the operation skills are mastered. 20. Practice has proved that low frequency current is harmful to the human body than high frequency current (large). Second, multiple choice questions A 1. When the capacitor is replaced, the capacitor (B) must first meet the requirements. A. Capacitance B. Withstand voltage C. Current D. Power 2. The tester can provide three input formats: PROTEL file format, (C) and index table format, which can be selected according to the needs of use. A. BMP format B. Text format C. Connection table format D. JGP format 3. Commonly used industrial control systems are usually divided into distributed control systems, programmable controllers, STD bus industrial control machines, (B) modular control systems, intelligent control and control instruments. A. 16-bit single board machine B. Industrial PCC main CPU C. 32-bit single unit 4. When the three-phase input voltage unbalance rate of the distribution transformer is greater than (D), it will have an adverse effect on the system. A. ±5% B. ±3% C. 5% D. 3% 5. The frequency converter retrofit equipment speed control system improves the performance of (A) and reduces the power consumption. A. Speed control B. Accurate C. Anti-disturbance D. Stable 6. PLC transformation equipment control is to replace the large and complex (B) control device in the original equipment control with PLC programmable controller. A. Analog B. Relay C. Real D. Timing logic circuit 7. The frequency converter retrofit equipment speed control system adopts AC frequency converter speed regulation to replace the original equipment (C) or other motor speed control scheme. A. Variable pole speed control B. Variable voltage speed regulation C. DC speed regulation D. Closed loop negative feedback 8. The transistor diagram shows that when measuring the triode (C), the distance between the family of characteristic curves can be changed. A. Step selection B. Power consumption resistor C. Collector - base current / potential D. Peak range 9. The function of repeated grounding is to reduce the voltage of the earth leakage device to the ground and reduce the risk of (A) disconnection. A. Neutral line B. Protection ground line C. Phase line D. Phase line and center line 10. The leakage protection device can cut off the power supply in (D) when the human body touches the charged body. A. 10s B. 5s C. 1s D. 0.1s B 1. 50uF/400V is equivalent to one (A) in parallel with 100uF/400V. A. 150uF/400V B. 75uF/400V C. 150uF/800V D. 25uF/400V 2. The logic analyzer is developed according to the (C) idea. A. Storage oscilloscope B. Dual trace oscilloscope C. Multi-line oscilloscope D. Logic circuit 3. Single CPU industrial control system can control (D) loop time-sharing. A. Plurality of open loop control B. Two closed loop control C. Three closed loop control D. Multiple closed loop control 4. When the inductance of the power distribution system and the compensation capacitor are in series resonance, (B) impedance is presented. A. Zero B. Minimum C. Maximum D. Short circuit 5. The frequency converter retrofit equipment speed control system improves the performance of (A) and reduces the power consumption. A. Speed control B. Accuracy C. Anti-disturbance D. Stable 6. PLC transformation equipment control refers to the use of PLC programmable controller to replace the large and complex (B) control device in the original equipment control. A. Simulate B. Relay C. Real time D. Sequential logic circuit 7. The frequency converter retrofit equipment speed control system adopts the AC frequency converter speed regulation instead of the original equipment (C) or other motor speed regulation scheme. A. Variable pole speed regulation B. Variable pressure speed regulation C. DC speed regulation D. Closed loop negative feedback 8. The main frequency signal generator uses the frequency adjustment knob to change the main vibration map (A) A. Variable circuit B. Lower voltage C. Current size D. Variable resistance value 9. The electric shock (B) should be rescued simultaneously by artificial respiration and chest compression. A. Have a heartbeat without a call B. No heartbeat and no breathing C. No heartbeat, breathing D. Difficulty breathing 10. The main circuit switching device of the high-performance high-voltage inverter speed control device adopts (B). A. Fast Recovery Diode B. Insulated Gate Bipolar Transistor C. Power Transistor D. Power Field Effect Transistor C 1. The mounting dimensions of the PLC module, (D), etc., have generally been standardized. A. Current class B. Power class C. Insulation class D. Voltage class 2. Accuracy is the degree to which the measurement results deviate from the true value. The size of (C) is a sign of accuracy. A. Additional error B. Basic error C. Systematic error D. Absolute error 3. The primary equipment of a typical industrial control system typically consists of a (C) transmitter and actuator mechanism. A. Sensor B. Probe C. Controlled object D. Primary cable 4. In the anti-interference measures on the output side of the inverter, in order to reduce (B), an output reactor can be installed on the output side. A. Power supply B. Electromagnetic noise C. Higher harmonic D. Signal 5. The frequency converter retrofit equipment speed control system improves the performance of (A) and reduces energy consumption. A. Speed regulation B. Accuracy C. Anti-disturbance D. Stable 6. PLC transformation equipment control refers to the use of PLC programmable controller to replace the large and complex (B) control device in the original equipment control. A. Analog B. Relay C. Time Real D. Sequential Logic Circuit 7. When conducting theoretical teaching training, in addition to the textbooks, some (A) aspects should be introduced in conjunction with this occupation. A. "Four new" application B. Case C. Students interested D. Technology dynamics 8. Inverter retrofit equipment speed control system adopts AC frequency converter speed regulation to replace the original equipment (C) or other motor speed control scheme A. Variable pole speed regulation B. Variable pressure speed regulation C. DC speed regulation D. Closed loop negative feedback 9. Digital display retrofit machine installs digital display (B) detection device on ordinary machine tools. A. Spindle rotation speed B. Position C. Overload D. Feed rate 10. Observing the waveform movement on the oscilloscope is done by (B). A. Filament voltage B. Deflection system C. Acceleration pole voltage D. Focus voltage D 1. The modulated signal is expressed in the form of (A). A. Discrete B. Sword C. Surround D. Oscillation 2. 50uF/400V is equivalent to one (A) in parallel with 100uF/400V. A. 150uF/400V B. 75uF/400V C. 150uF/800V D. 25uF/400V 3. When the person (A) is involved, artificial respiration should be performed. A. Have a heartbeat and no breath B. Have a breath without heartbeat C. No heartbeat and no breathing D. Both heartbeat and breathing. 4. Floating connection requires insulation resistance of the whole machine and ground (C) A. Less than 4Ω B. Greater than 500MΩ C. Less than 500MΩ D. Greater than 50MΩ 5. PLC transformation equipment control refers to the use of PLC programmable controller to replace the large and complex (B) control device in the original equipment control. A. Analog B. Relay C. Time Real D. Sequential Logic Circuit 6. The frequency converter retrofit equipment speed control system uses AC frequency converter to replace the original equipment (C) or other motor speed control scheme. A. Variable pole speed regulation B. Variable pressure speed regulation C. DC speed regulation D. Closed loop negative feedback 7. The digital display machine tool is equipped with a digital display (B) detection device on an ordinary machine tool. A. Spindle rotation speed B. Position C. Overload D. Feed rate 8. The transformation of economical CNC machine tools is mainly used for the numerical control transformation of medium and small (A) and milling machines. A. Lathe B. Grinder C. Drilling Machine D. Boring Machine 9. There is a master production plan (MP3), material requirements planning (MRP) production schedule (DS) capacity demand plan (CRP) constitutes (B). A. Lean Production Plan B. Manufacturing Resource Plan MRPII C. Kanban Management Plan D. Comprehensive Production Plan 10. When the person (A) is involved, artificial respiration should be performed. A. Have a heartbeat without breathing B. No heartbeat and no breathing C. No heartbeat, breathing D. Difficulty breathing Third, judgment question (correct, please type "√" in the brackets; wrong "X") 1. The PROGEAMMING of the SIN840C main menu is edited on the MMC hard disk and edited in ASCII code. (√) 2. The DIAGNOSIS diagnostic area is primarily used for machine tool adjustment and maintenance. (√) 3. The A/D converter is an AC to DC converter. (×) 4. There is a master production plan (MP3), material requirements planning (MRP) production schedule (DS) capacity demand plan (CRP) constitutes the manufacturing resource plan MRPII. (√) 5. ISO9000-4 in the ISO9000 family of standards is the guiding standard. (×) 6. Maintenance electrician classes are mainly for production services. (√) 7. The general approach to theoretical training is classroom instruction. (√) 8. Guiding the operation is an extremely important method and means to develop and improve the independent skills of the students. (×) 9. Practice has proved that low frequency current is less harmful to the human body than high frequency current. (×) 10. When an electric shock victim has a heartbeat and no breathing, artificial respiration should be performed. (√) ... [Continued]
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